./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/java_Nested.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/java_Nested.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD --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 6f3c7109e3632c85dc9002b2a2bde96ba9bdc501efcd49505c298845bf1ea677 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:54:44,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:54:44,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:54:44,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:54:44,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:54:44,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:54:44,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:54:44,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:54:44,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:54:44,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:54:44,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:54:44,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:54:44,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:54:44,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:54:44,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:54:44,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:54:44,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:54:44,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:54:44,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:54:44,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:54:44,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:54:44,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:54:44,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:54:44,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:54:44,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:54:44,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:54:44,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:54:44,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:54:44,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:54:44,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:54:44,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:54:44,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:54:44,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:54:44,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:54:44,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:54:44,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:54:44,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:54:44,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:54:44,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:54:44,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:54:44,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:54:44,278 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 23:54:44,330 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:54:44,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:54:44,332 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:54:44,332 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:54:44,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:54:44,334 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:54:44,334 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:54:44,335 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:54:44,335 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:54:44,335 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:54:44,336 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:54:44,336 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:54:44,337 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:54:44,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:54:44,337 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:54:44,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:54:44,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:54:44,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:54:44,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:54:44,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:54:44,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:54:44,339 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:54:44,339 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:54:44,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:54:44,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:54:44,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:54:44,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:54:44,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:54:44,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:54:44,344 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:54:44,344 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_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f3c7109e3632c85dc9002b2a2bde96ba9bdc501efcd49505c298845bf1ea677 [2021-10-28 23:54:44,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:54:44,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:54:44,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:54:44,671 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:54:44,672 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:54:44,673 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/termination-restricted-15/java_Nested.c [2021-10-28 23:54:44,744 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/data/9821d498c/1e02fa8c4dea495ea951f571587775be/FLAGa9670defe [2021-10-28 23:54:45,358 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:54:45,359 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/sv-benchmarks/c/termination-restricted-15/java_Nested.c [2021-10-28 23:54:45,374 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/data/9821d498c/1e02fa8c4dea495ea951f571587775be/FLAGa9670defe [2021-10-28 23:54:45,716 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/data/9821d498c/1e02fa8c4dea495ea951f571587775be [2021-10-28 23:54:45,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:54:45,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:54:45,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:54:45,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:54:45,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:54:45,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:54:45" (1/1) ... [2021-10-28 23:54:45,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c1baead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:45, skipping insertion in model container [2021-10-28 23:54:45,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:54:45" (1/1) ... [2021-10-28 23:54:45,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:54:45,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:54:45,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:54:45,984 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:54:46,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:54:46,022 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:54:46,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:46 WrapperNode [2021-10-28 23:54:46,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:54:46,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:54:46,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:54:46,025 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:54:46,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:46" (1/1) ... [2021-10-28 23:54:46,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:46" (1/1) ... [2021-10-28 23:54:46,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:54:46,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:54:46,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:54:46,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:54:46,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:46" (1/1) ... [2021-10-28 23:54:46,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:46" (1/1) ... [2021-10-28 23:54:46,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:46" (1/1) ... [2021-10-28 23:54:46,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:46" (1/1) ... [2021-10-28 23:54:46,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:46" (1/1) ... [2021-10-28 23:54:46,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:46" (1/1) ... [2021-10-28 23:54:46,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:46" (1/1) ... [2021-10-28 23:54:46,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:54:46,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:54:46,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:54:46,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:54:46,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:46" (1/1) ... [2021-10-28 23:54:46,104 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:46,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:46,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:46,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:54:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:54:46,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:54:46,373 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:54:46,374 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-28 23:54:46,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:54:46 BoogieIcfgContainer [2021-10-28 23:54:46,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:54:46,379 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:54:46,379 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:54:46,383 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:54:46,383 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:54:46,384 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:54:45" (1/3) ... [2021-10-28 23:54:46,386 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5fcafd25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:54:46, skipping insertion in model container [2021-10-28 23:54:46,386 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:54:46,386 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:46" (2/3) ... [2021-10-28 23:54:46,388 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5fcafd25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:54:46, skipping insertion in model container [2021-10-28 23:54:46,388 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:54:46,389 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:54:46" (3/3) ... [2021-10-28 23:54:46,391 INFO L389 chiAutomizerObserver]: Analyzing ICFG java_Nested.c [2021-10-28 23:54:46,453 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:54:46,453 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:54:46,453 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:54:46,454 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:54:46,455 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:54:46,455 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:54:46,455 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:54:46,455 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:54:46,471 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:46,495 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 23:54:46,495 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:54:46,495 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:54:46,501 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:54:46,502 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:54:46,502 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:54:46,503 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:46,504 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 23:54:46,505 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:54:46,505 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:54:46,506 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:54:46,506 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:54:46,513 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 5#L10-2true [2021-10-28 23:54:46,514 INFO L793 eck$LassoCheckResult]: Loop: 5#L10-2true assume !!(main_~i~0 < 10);main_~j~0 := 3; 3#L12-2true assume !(main_~j~0 < 12); 7#L12-3true main_~i~0 := 1 + main_~i~0; 5#L10-2true [2021-10-28 23:54:46,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:46,520 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-28 23:54:46,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:46,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367243062] [2021-10-28 23:54:46,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:46,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:46,623 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:46,654 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:46,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:46,659 INFO L85 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2021-10-28 23:54:46,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:46,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375621683] [2021-10-28 23:54:46,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:46,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:46,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:46,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:54:46,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375621683] [2021-10-28 23:54:46,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375621683] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:54:46,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:54:46,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:54:46,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109488391] [2021-10-28 23:54:46,772 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:54:46,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:54:46,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:54:46,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:54:46,804 INFO L87 Difference]: Start difference. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:46,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:46,844 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-10-28 23:54:46,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:54:46,847 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2021-10-28 23:54:46,848 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 23:54:46,852 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 5 states and 6 transitions. [2021-10-28 23:54:46,853 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-10-28 23:54:46,854 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-10-28 23:54:46,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 6 transitions. [2021-10-28 23:54:46,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:54:46,855 INFO L681 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2021-10-28 23:54:46,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 6 transitions. [2021-10-28 23:54:46,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2021-10-28 23:54:46,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:46,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2021-10-28 23:54:46,902 INFO L704 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2021-10-28 23:54:46,902 INFO L587 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2021-10-28 23:54:46,902 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:54:46,903 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 6 transitions. [2021-10-28 23:54:46,903 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 23:54:46,903 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:54:46,904 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:54:46,904 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:54:46,904 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 23:54:46,904 INFO L791 eck$LassoCheckResult]: Stem: 29#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 28#L10-2 [2021-10-28 23:54:46,905 INFO L793 eck$LassoCheckResult]: Loop: 28#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 26#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 27#L12-2 assume !(main_~j~0 < 12); 30#L12-3 main_~i~0 := 1 + main_~i~0; 28#L10-2 [2021-10-28 23:54:46,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:46,906 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-10-28 23:54:46,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:46,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18597747] [2021-10-28 23:54:46,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:46,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:46,911 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:46,915 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:46,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:46,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1240240, now seen corresponding path program 1 times [2021-10-28 23:54:46,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:46,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247471526] [2021-10-28 23:54:46,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:46,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:46,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:46,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:54:46,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247471526] [2021-10-28 23:54:46,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247471526] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:54:46,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098195616] [2021-10-28 23:54:46,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:46,965 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:54:46,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:46,984 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:54:46,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:54:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:47,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:54:47,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:47,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:47,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098195616] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:54:47,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:54:47,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-28 23:54:47,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617183626] [2021-10-28 23:54:47,091 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:54:47,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:54:47,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:54:47,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:54:47,093 INFO L87 Difference]: Start difference. First operand 5 states and 6 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 1.0) 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) [2021-10-28 23:54:47,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:47,123 INFO L93 Difference]: Finished difference Result 6 states and 7 transitions. [2021-10-28 23:54:47,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:54:47,124 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 7 transitions. [2021-10-28 23:54:47,125 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 23:54:47,127 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 6 states and 7 transitions. [2021-10-28 23:54:47,127 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-10-28 23:54:47,127 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-10-28 23:54:47,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 7 transitions. [2021-10-28 23:54:47,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:54:47,129 INFO L681 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2021-10-28 23:54:47,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 7 transitions. [2021-10-28 23:54:47,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-10-28 23:54:47,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 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) [2021-10-28 23:54:47,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2021-10-28 23:54:47,132 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2021-10-28 23:54:47,132 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2021-10-28 23:54:47,132 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:54:47,133 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2021-10-28 23:54:47,133 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 23:54:47,134 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:54:47,135 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:54:47,135 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:54:47,135 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1] [2021-10-28 23:54:47,136 INFO L791 eck$LassoCheckResult]: Stem: 56#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 55#L10-2 [2021-10-28 23:54:47,136 INFO L793 eck$LassoCheckResult]: Loop: 55#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 53#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 54#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 58#L12-2 assume !(main_~j~0 < 12); 57#L12-3 main_~i~0 := 1 + main_~i~0; 55#L10-2 [2021-10-28 23:54:47,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:47,137 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2021-10-28 23:54:47,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:47,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403097207] [2021-10-28 23:54:47,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:47,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:47,147 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:47,162 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:47,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:47,163 INFO L85 PathProgramCache]: Analyzing trace with hash 38449199, now seen corresponding path program 2 times [2021-10-28 23:54:47,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:47,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534157170] [2021-10-28 23:54:47,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:47,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:47,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:47,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:54:47,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534157170] [2021-10-28 23:54:47,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534157170] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:54:47,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686847376] [2021-10-28 23:54:47,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:54:47,206 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:54:47,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:47,208 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:54:47,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:54:47,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:54:47,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:54:47,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:54:47,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:47,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:47,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686847376] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:54:47,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:54:47,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-28 23:54:47,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51363601] [2021-10-28 23:54:47,295 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:54:47,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:54:47,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:54:47,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:54:47,297 INFO L87 Difference]: Start difference. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand has 5 states, 5 states have (on average 1.0) internal successors, (5), 4 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) [2021-10-28 23:54:47,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:47,309 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2021-10-28 23:54:47,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:54:47,309 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 8 transitions. [2021-10-28 23:54:47,310 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-28 23:54:47,311 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 8 transitions. [2021-10-28 23:54:47,311 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-28 23:54:47,311 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-28 23:54:47,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2021-10-28 23:54:47,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:54:47,311 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-10-28 23:54:47,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2021-10-28 23:54:47,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-28 23:54:47,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 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) [2021-10-28 23:54:47,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2021-10-28 23:54:47,313 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-10-28 23:54:47,314 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-10-28 23:54:47,314 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:54:47,314 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2021-10-28 23:54:47,314 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-28 23:54:47,315 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:54:47,315 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:54:47,315 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:54:47,315 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 1, 1, 1] [2021-10-28 23:54:47,315 INFO L791 eck$LassoCheckResult]: Stem: 89#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 88#L10-2 [2021-10-28 23:54:47,316 INFO L793 eck$LassoCheckResult]: Loop: 88#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 86#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 87#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 92#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 91#L12-2 assume !(main_~j~0 < 12); 90#L12-3 main_~i~0 := 1 + main_~i~0; 88#L10-2 [2021-10-28 23:54:47,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:47,316 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 4 times [2021-10-28 23:54:47,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:47,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759165155] [2021-10-28 23:54:47,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:47,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:47,322 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:47,325 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:47,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:47,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1191926928, now seen corresponding path program 3 times [2021-10-28 23:54:47,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:47,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14601932] [2021-10-28 23:54:47,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:47,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:47,393 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:47,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:54:47,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14601932] [2021-10-28 23:54:47,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14601932] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:54:47,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836233399] [2021-10-28 23:54:47,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:54:47,400 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:54:47,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:47,427 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:54:47,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 23:54:47,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-28 23:54:47,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:54:47,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:54:47,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:47,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:47,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836233399] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:54:47,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:54:47,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-28 23:54:47,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677375097] [2021-10-28 23:54:47,514 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:54:47,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:54:47,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:54:47,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:54:47,515 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand has 6 states, 6 states have (on average 1.0) 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) [2021-10-28 23:54:47,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:47,528 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2021-10-28 23:54:47,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:54:47,529 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2021-10-28 23:54:47,529 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-28 23:54:47,530 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 9 transitions. [2021-10-28 23:54:47,530 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-10-28 23:54:47,530 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-28 23:54:47,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2021-10-28 23:54:47,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:54:47,531 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-10-28 23:54:47,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2021-10-28 23:54:47,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-28 23:54:47,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:47,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-10-28 23:54:47,533 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-10-28 23:54:47,534 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-10-28 23:54:47,534 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 23:54:47,534 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 9 transitions. [2021-10-28 23:54:47,535 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-28 23:54:47,535 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:54:47,535 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:54:47,535 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:54:47,536 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 1, 1, 1] [2021-10-28 23:54:47,536 INFO L791 eck$LassoCheckResult]: Stem: 128#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 127#L10-2 [2021-10-28 23:54:47,536 INFO L793 eck$LassoCheckResult]: Loop: 127#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 125#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 126#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 132#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 131#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 130#L12-2 assume !(main_~j~0 < 12); 129#L12-3 main_~i~0 := 1 + main_~i~0; 127#L10-2 [2021-10-28 23:54:47,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:47,537 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 5 times [2021-10-28 23:54:47,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:47,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969971035] [2021-10-28 23:54:47,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:47,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:47,543 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:47,547 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:47,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:47,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1704969137, now seen corresponding path program 4 times [2021-10-28 23:54:47,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:47,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367883736] [2021-10-28 23:54:47,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:47,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:47,612 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:47,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:54:47,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367883736] [2021-10-28 23:54:47,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367883736] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:54:47,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737997630] [2021-10-28 23:54:47,614 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 23:54:47,614 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:54:47,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:47,617 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:54:47,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 23:54:47,685 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 23:54:47,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:54:47,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:54:47,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:47,743 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:47,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737997630] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:54:47,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:54:47,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-28 23:54:47,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430861285] [2021-10-28 23:54:47,744 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:54:47,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:54:47,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:54:47,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:54:47,746 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. cyclomatic complexity: 2 Second operand has 7 states, 7 states have (on average 1.0) internal successors, (7), 6 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) [2021-10-28 23:54:47,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:47,775 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-10-28 23:54:47,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:54:47,776 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2021-10-28 23:54:47,776 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 23:54:47,777 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 10 transitions. [2021-10-28 23:54:47,777 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-10-28 23:54:47,777 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-10-28 23:54:47,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 10 transitions. [2021-10-28 23:54:47,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:54:47,778 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-28 23:54:47,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 10 transitions. [2021-10-28 23:54:47,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-28 23:54:47,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 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) [2021-10-28 23:54:47,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-10-28 23:54:47,784 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-28 23:54:47,784 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-28 23:54:47,784 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 23:54:47,784 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2021-10-28 23:54:47,785 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 23:54:47,785 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:54:47,785 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:54:47,786 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:54:47,786 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 1, 1, 1] [2021-10-28 23:54:47,786 INFO L791 eck$LassoCheckResult]: Stem: 173#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 172#L10-2 [2021-10-28 23:54:47,786 INFO L793 eck$LassoCheckResult]: Loop: 172#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 170#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 171#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 178#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 177#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 176#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 175#L12-2 assume !(main_~j~0 < 12); 174#L12-3 main_~i~0 := 1 + main_~i~0; 172#L10-2 [2021-10-28 23:54:47,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:47,787 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 6 times [2021-10-28 23:54:47,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:47,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355101007] [2021-10-28 23:54:47,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:47,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:47,804 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:47,807 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:47,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:47,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1314433936, now seen corresponding path program 5 times [2021-10-28 23:54:47,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:47,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483699301] [2021-10-28 23:54:47,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:47,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:47,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:54:47,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483699301] [2021-10-28 23:54:47,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483699301] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:54:47,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133336770] [2021-10-28 23:54:47,886 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 23:54:47,886 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:54:47,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:47,888 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:54:47,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 23:54:47,951 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-28 23:54:47,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:54:47,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:54:47,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:48,000 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:48,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133336770] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:54:48,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:54:48,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-28 23:54:48,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981678874] [2021-10-28 23:54:48,002 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:54:48,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:54:48,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:54:48,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:54:48,003 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. cyclomatic complexity: 2 Second operand has 8 states, 8 states have (on average 1.0) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:48,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:48,017 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2021-10-28 23:54:48,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:54:48,018 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2021-10-28 23:54:48,019 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-28 23:54:48,019 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 11 transitions. [2021-10-28 23:54:48,019 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-10-28 23:54:48,019 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-10-28 23:54:48,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 11 transitions. [2021-10-28 23:54:48,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:54:48,020 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-28 23:54:48,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 11 transitions. [2021-10-28 23:54:48,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-28 23:54:48,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.1) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:48,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-28 23:54:48,022 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-28 23:54:48,022 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-28 23:54:48,022 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 23:54:48,022 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 11 transitions. [2021-10-28 23:54:48,023 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-28 23:54:48,023 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:54:48,023 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:54:48,024 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:54:48,024 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 1, 1, 1] [2021-10-28 23:54:48,024 INFO L791 eck$LassoCheckResult]: Stem: 224#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 223#L10-2 [2021-10-28 23:54:48,024 INFO L793 eck$LassoCheckResult]: Loop: 223#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 221#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 222#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 230#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 229#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 228#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 227#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 226#L12-2 assume !(main_~j~0 < 12); 225#L12-3 main_~i~0 := 1 + main_~i~0; 223#L10-2 [2021-10-28 23:54:48,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:48,025 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 7 times [2021-10-28 23:54:48,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:48,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288312815] [2021-10-28 23:54:48,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:48,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:48,029 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:48,032 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:48,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:48,033 INFO L85 PathProgramCache]: Analyzing trace with hash -2092744593, now seen corresponding path program 6 times [2021-10-28 23:54:48,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:48,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310961434] [2021-10-28 23:54:48,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:48,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:48,112 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:48,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:54:48,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310961434] [2021-10-28 23:54:48,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310961434] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:54:48,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353801676] [2021-10-28 23:54:48,114 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 23:54:48,114 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:54:48,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:48,116 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:54:48,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 23:54:48,167 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-28 23:54:48,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:54:48,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:54:48,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:48,242 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:48,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353801676] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:54:48,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:54:48,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-28 23:54:48,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554775013] [2021-10-28 23:54:48,244 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:54:48,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:54:48,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:54:48,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:54:48,245 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. cyclomatic complexity: 2 Second operand has 9 states, 9 states have (on average 1.0) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:48,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:48,274 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2021-10-28 23:54:48,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:54:48,274 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2021-10-28 23:54:48,275 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 23:54:48,276 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 12 transitions. [2021-10-28 23:54:48,276 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-28 23:54:48,276 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-28 23:54:48,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 12 transitions. [2021-10-28 23:54:48,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:54:48,277 INFO L681 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-28 23:54:48,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 12 transitions. [2021-10-28 23:54:48,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-28 23:54:48,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 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) [2021-10-28 23:54:48,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-10-28 23:54:48,283 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-28 23:54:48,283 INFO L587 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-28 23:54:48,283 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 23:54:48,283 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 12 transitions. [2021-10-28 23:54:48,284 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 23:54:48,286 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:54:48,286 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:54:48,287 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:54:48,287 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [7, 1, 1, 1] [2021-10-28 23:54:48,287 INFO L791 eck$LassoCheckResult]: Stem: 281#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 280#L10-2 [2021-10-28 23:54:48,287 INFO L793 eck$LassoCheckResult]: Loop: 280#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 278#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 279#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 288#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 287#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 286#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 285#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 284#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 283#L12-2 assume !(main_~j~0 < 12); 282#L12-3 main_~i~0 := 1 + main_~i~0; 280#L10-2 [2021-10-28 23:54:48,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:48,288 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 8 times [2021-10-28 23:54:48,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:48,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214790760] [2021-10-28 23:54:48,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:48,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:48,296 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:48,302 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:48,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:48,306 INFO L85 PathProgramCache]: Analyzing trace with hash -450571184, now seen corresponding path program 7 times [2021-10-28 23:54:48,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:48,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789006110] [2021-10-28 23:54:48,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:48,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:48,436 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:48,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:54:48,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789006110] [2021-10-28 23:54:48,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789006110] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:54:48,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898777870] [2021-10-28 23:54:48,443 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 23:54:48,443 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:54:48,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:48,449 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:54:48,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 23:54:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:48,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:54:48,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:48,588 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:48,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898777870] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:54:48,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:54:48,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-28 23:54:48,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356066063] [2021-10-28 23:54:48,590 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:54:48,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:54:48,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:54:48,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:54:48,591 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. cyclomatic complexity: 2 Second operand has 10 states, 10 states have (on average 1.0) internal successors, (10), 9 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) [2021-10-28 23:54:48,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:48,610 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2021-10-28 23:54:48,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:54:48,610 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 13 transitions. [2021-10-28 23:54:48,611 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-10-28 23:54:48,611 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 13 transitions. [2021-10-28 23:54:48,612 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-10-28 23:54:48,612 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-10-28 23:54:48,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 13 transitions. [2021-10-28 23:54:48,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:54:48,612 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-10-28 23:54:48,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 13 transitions. [2021-10-28 23:54:48,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-28 23:54:48,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 11 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) [2021-10-28 23:54:48,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-10-28 23:54:48,614 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-10-28 23:54:48,614 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-10-28 23:54:48,614 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-28 23:54:48,614 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 13 transitions. [2021-10-28 23:54:48,615 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-10-28 23:54:48,615 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:54:48,615 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:54:48,616 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:54:48,616 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [8, 1, 1, 1] [2021-10-28 23:54:48,616 INFO L791 eck$LassoCheckResult]: Stem: 344#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 343#L10-2 [2021-10-28 23:54:48,616 INFO L793 eck$LassoCheckResult]: Loop: 343#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 341#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 342#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 352#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 351#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 350#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 349#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 348#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 347#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 346#L12-2 assume !(main_~j~0 < 12); 345#L12-3 main_~i~0 := 1 + main_~i~0; 343#L10-2 [2021-10-28 23:54:48,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:48,617 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 9 times [2021-10-28 23:54:48,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:48,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440437423] [2021-10-28 23:54:48,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:48,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:48,621 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:48,623 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:48,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:48,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1082803057, now seen corresponding path program 8 times [2021-10-28 23:54:48,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:48,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678676377] [2021-10-28 23:54:48,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:48,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:48,746 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:48,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:54:48,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678676377] [2021-10-28 23:54:48,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678676377] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:54:48,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161008696] [2021-10-28 23:54:48,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:54:48,748 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:54:48,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:48,754 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:54:48,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 23:54:48,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:54:48,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:54:48,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:54:48,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:48,885 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:48,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161008696] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:54:48,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:54:48,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-28 23:54:48,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235944610] [2021-10-28 23:54:48,886 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:54:48,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:54:48,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:54:48,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:54:48,887 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. cyclomatic complexity: 2 Second operand has 11 states, 11 states have (on average 1.0) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:48,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:48,904 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-10-28 23:54:48,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:54:48,905 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2021-10-28 23:54:48,905 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 23:54:48,906 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 14 transitions. [2021-10-28 23:54:48,906 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-10-28 23:54:48,906 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-10-28 23:54:48,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 14 transitions. [2021-10-28 23:54:48,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:54:48,907 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-28 23:54:48,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 14 transitions. [2021-10-28 23:54:48,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-28 23:54:48,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:48,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-28 23:54:48,909 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-28 23:54:48,909 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-28 23:54:48,909 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-28 23:54:48,909 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 14 transitions. [2021-10-28 23:54:48,910 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 23:54:48,910 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:54:48,910 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:54:48,910 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:54:48,910 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [9, 1, 1, 1] [2021-10-28 23:54:48,911 INFO L791 eck$LassoCheckResult]: Stem: 413#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 412#L10-2 [2021-10-28 23:54:48,911 INFO L793 eck$LassoCheckResult]: Loop: 412#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 410#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 411#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 422#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 421#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 420#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 419#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 418#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 417#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 416#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 415#L12-2 assume !(main_~j~0 < 12); 414#L12-3 main_~i~0 := 1 + main_~i~0; 412#L10-2 [2021-10-28 23:54:48,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:48,911 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 10 times [2021-10-28 23:54:48,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:48,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639531712] [2021-10-28 23:54:48,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:48,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:48,915 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:48,918 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:48,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:48,918 INFO L85 PathProgramCache]: Analyzing trace with hash 792845360, now seen corresponding path program 9 times [2021-10-28 23:54:48,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:48,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612969158] [2021-10-28 23:54:48,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:48,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:48,933 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:48,947 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:48,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:48,947 INFO L85 PathProgramCache]: Analyzing trace with hash 287286735, now seen corresponding path program 1 times [2021-10-28 23:54:48,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:48,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554729872] [2021-10-28 23:54:48,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:48,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:48,972 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:48,985 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:49,257 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:54:49,258 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:54:49,258 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:54:49,258 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:54:49,259 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:54:49,259 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:49,259 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:54:49,259 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:54:49,259 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration10_Loop [2021-10-28 23:54:49,259 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:54:49,260 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:54:49,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:49,287 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:49,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:49,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:49,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:49,367 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:54:49,368 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:54:49,370 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:49,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:49,373 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:49,383 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:49,383 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:49,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 23:54:49,408 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:54:49,408 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: [] [2021-10-28 23:54:49,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:49,447 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:49,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:49,454 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:49,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 23:54:49,467 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:49,468 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:49,518 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:54:49,518 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: [] [2021-10-28 23:54:49,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:49,592 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:49,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:49,610 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:49,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 23:54:49,659 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:49,659 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:49,690 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:54:49,690 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=12} Honda state: {ULTIMATE.start_main_~j~0=12} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:54:49,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:49,760 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:49,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:49,766 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:49,774 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:49,775 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:49,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 23:54:49,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:49,830 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:49,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:49,831 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:49,839 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:54:49,839 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:49,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 23:54:49,897 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:54:49,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:49,906 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:54:49,906 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:54:49,906 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:54:49,906 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:54:49,907 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:54:49,907 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:49,907 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:54:49,907 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:54:49,907 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration10_Loop [2021-10-28 23:54:49,907 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:54:49,907 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:54:49,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:49,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:49,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:49,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:49,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:49,993 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:54:49,998 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:54:50,000 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:50,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:50,001 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:50,017 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:54:50,028 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:50,029 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:50,029 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:50,029 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:50,034 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:54:50,035 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:54:50,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 23:54:50,048 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:54:50,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:50,091 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:50,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:50,094 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:50,105 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:54:50,117 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:50,117 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:50,118 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:50,118 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:50,118 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:50,119 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:54:50,120 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:50,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 23:54:50,141 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:54:50,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:50,179 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:50,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:50,180 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:50,191 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 [2021-10-28 23:54:50,201 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:50,202 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:50,202 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:50,202 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:50,207 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:54:50,207 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:54:50,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 23:54:50,224 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:54:50,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:50,266 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:50,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:50,267 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:50,275 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 [2021-10-28 23:54:50,285 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:50,286 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:50,286 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:50,286 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:50,286 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:50,288 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:54:50,288 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:50,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 23:54:50,305 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:54:50,310 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:54:50,310 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:54:50,312 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:50,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:50,314 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:50,321 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:54:50,321 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:54:50,322 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:54:50,322 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 19 Supporting invariants [] [2021-10-28 23:54:50,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 23:54:50,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:50,364 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:54:50,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:50,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:54:50,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:50,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:54:50,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:50,563 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-10-28 23:54:50,566 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 [2021-10-28 23:54:50,567 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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) [2021-10-28 23:54:50,599 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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 25 states and 28 transitions. Complement of second has 4 states. [2021-10-28 23:54:50,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 23:54:50,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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) [2021-10-28 23:54:50,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-10-28 23:54:50,603 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 12 letters. [2021-10-28 23:54:50,603 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:50,603 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 13 letters. Loop has 12 letters. [2021-10-28 23:54:50,604 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:50,604 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 24 letters. [2021-10-28 23:54:50,605 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:50,605 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 28 transitions. [2021-10-28 23:54:50,611 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-28 23:54:50,615 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 24 states and 27 transitions. [2021-10-28 23:54:50,616 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-28 23:54:50,616 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-10-28 23:54:50,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 27 transitions. [2021-10-28 23:54:50,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:54:50,616 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-10-28 23:54:50,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 27 transitions. [2021-10-28 23:54:50,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 15. [2021-10-28 23:54:50,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.2) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:50,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-10-28 23:54:50,622 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-10-28 23:54:50,622 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-10-28 23:54:50,622 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-28 23:54:50,622 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2021-10-28 23:54:50,624 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-28 23:54:50,624 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:54:50,624 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:54:50,624 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:54:50,624 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-28 23:54:50,625 INFO L791 eck$LassoCheckResult]: Stem: 512#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 510#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 507#L12-2 [2021-10-28 23:54:50,625 INFO L793 eck$LassoCheckResult]: Loop: 507#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 507#L12-2 [2021-10-28 23:54:50,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:50,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-28 23:54:50,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:50,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608747028] [2021-10-28 23:54:50,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:50,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:50,636 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:50,639 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:50,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:50,640 INFO L85 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2021-10-28 23:54:50,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:50,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567787505] [2021-10-28 23:54:50,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:50,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:50,649 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:50,654 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:50,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:50,655 INFO L85 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2021-10-28 23:54:50,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:50,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289468903] [2021-10-28 23:54:50,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:50,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:50,670 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:50,674 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:50,701 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:54:50,702 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:54:50,702 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:54:50,702 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:54:50,702 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:54:50,702 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:50,702 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:54:50,702 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:54:50,703 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration11_Loop [2021-10-28 23:54:50,703 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:54:50,703 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:54:50,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:50,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:50,711 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:50,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:50,766 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:54:50,766 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:54:50,766 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:50,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:50,768 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:50,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 23:54:50,782 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:50,782 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:50,804 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:54:50,804 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: [] [2021-10-28 23:54:50,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:50,850 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:50,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:50,854 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:50,867 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:50,867 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:50,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 23:54:50,894 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:54:50,894 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: [] [2021-10-28 23:54:50,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:50,928 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:50,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:50,929 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:50,938 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:50,938 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:50,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-28 23:54:50,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:50,994 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:50,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:50,995 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:51,003 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:54:51,003 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:51,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-28 23:54:51,035 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:54:51,035 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=1}, {ULTIMATE.start_main_~c~0=7}, {ULTIMATE.start_main_~c~0=-7}] Lambdas: [1, 2, 1] Nus: [0, 1] [2021-10-28 23:54:51,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:51,080 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:51,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:51,082 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:51,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-28 23:54:51,090 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:51,090 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:51,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:51,133 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:51,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:51,134 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:51,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 23:54:51,136 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:54:51,136 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:51,186 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:54:51,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:51,190 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:54:51,199 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:54:51,200 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:54:51,200 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:54:51,200 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:54:51,200 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:51,200 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:54:51,200 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:54:51,200 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration11_Loop [2021-10-28 23:54:51,200 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:54:51,200 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:54:51,201 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:51,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:51,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:51,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:51,264 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:54:51,264 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:54:51,264 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:51,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:51,265 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:51,286 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 [2021-10-28 23:54:51,296 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:51,296 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:51,296 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:51,296 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:51,304 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:54:51,304 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:54:51,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-28 23:54:51,332 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:54:51,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:51,388 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:51,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:51,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:51,391 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:51,398 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 [2021-10-28 23:54:51,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-28 23:54:51,410 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:51,410 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:51,411 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:51,411 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:51,422 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:54:51,422 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:54:51,439 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:54:51,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:51,484 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:51,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:51,485 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:51,488 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 [2021-10-28 23:54:51,499 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:51,500 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:51,500 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:51,500 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:51,500 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:51,501 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:54:51,501 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:51,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-28 23:54:51,521 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:54:51,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:51,564 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:51,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:51,565 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:51,572 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 [2021-10-28 23:54:51,583 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:51,583 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:51,583 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:51,583 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:51,583 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:51,585 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:54:51,585 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:51,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-28 23:54:51,605 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:54:51,608 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:54:51,609 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:54:51,609 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:51,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:51,610 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:51,613 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:54:51,613 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:54:51,613 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:54:51,613 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 23 Supporting invariants [] [2021-10-28 23:54:51,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-28 23:54:51,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:51,656 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:54:51,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:51,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:54:51,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:51,682 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:54:51,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:51,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:51,685 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-28 23:54:51,685 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:51,702 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 31 states and 36 transitions. Complement of second has 5 states. [2021-10-28 23:54:51,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 23:54:51,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:51,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-10-28 23:54:51,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2021-10-28 23:54:51,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:51,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2021-10-28 23:54:51,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:51,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2021-10-28 23:54:51,705 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:51,705 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 36 transitions. [2021-10-28 23:54:51,710 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-28 23:54:51,711 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 27 states and 31 transitions. [2021-10-28 23:54:51,711 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2021-10-28 23:54:51,711 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2021-10-28 23:54:51,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 31 transitions. [2021-10-28 23:54:51,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:54:51,712 INFO L681 BuchiCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-10-28 23:54:51,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 31 transitions. [2021-10-28 23:54:51,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 15. [2021-10-28 23:54:51,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:51,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-10-28 23:54:51,719 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-28 23:54:51,719 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-28 23:54:51,719 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-28 23:54:51,719 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 17 transitions. [2021-10-28 23:54:51,722 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-28 23:54:51,722 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:54:51,722 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:54:51,724 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [9, 2, 1, 1, 1] [2021-10-28 23:54:51,724 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-28 23:54:51,724 INFO L791 eck$LassoCheckResult]: Stem: 587#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 585#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 583#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 584#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 596#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 595#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 594#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 593#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 592#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 591#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 590#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 589#L12-2 assume !(main_~j~0 < 12); 588#L12-3 main_~i~0 := 1 + main_~i~0; 586#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 582#L12-2 [2021-10-28 23:54:51,724 INFO L793 eck$LassoCheckResult]: Loop: 582#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 582#L12-2 [2021-10-28 23:54:51,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:51,725 INFO L85 PathProgramCache]: Analyzing trace with hash 315954203, now seen corresponding path program 2 times [2021-10-28 23:54:51,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:51,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607062698] [2021-10-28 23:54:51,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:51,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:51,763 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:51,792 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:51,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:51,792 INFO L85 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2021-10-28 23:54:51,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:51,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338452903] [2021-10-28 23:54:51,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:51,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:51,797 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:51,800 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:51,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:51,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1204645720, now seen corresponding path program 3 times [2021-10-28 23:54:51,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:51,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114691589] [2021-10-28 23:54:51,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:51,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:51,835 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:51,854 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:51,883 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:54:51,883 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:54:51,883 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:54:51,883 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:54:51,883 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:54:51,884 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:51,884 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:54:51,884 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:54:51,884 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration12_Loop [2021-10-28 23:54:51,884 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:54:51,884 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:54:51,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:51,891 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:51,894 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:51,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:51,945 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:54:51,946 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:54:51,946 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:51,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:51,947 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:51,949 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:51,950 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:51,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-28 23:54:52,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:52,019 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:52,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:52,020 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:52,023 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:54:52,023 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:52,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-28 23:54:52,055 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:54:52,055 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=1}, {ULTIMATE.start_main_~c~0=7}, {ULTIMATE.start_main_~c~0=-7}] Lambdas: [1, 2, 1] Nus: [0, 1] [2021-10-28 23:54:52,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:52,080 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:52,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:52,081 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:52,082 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:52,082 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:52,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-28 23:54:52,098 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:54:52,098 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: [] [2021-10-28 23:54:52,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:52,118 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:52,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:52,119 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:52,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-28 23:54:52,120 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:52,120 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:52,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2021-10-28 23:54:52,152 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:52,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:52,153 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:52,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-28 23:54:52,154 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:54:52,154 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:52,214 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:54:52,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:52,221 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:54:52,221 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:54:52,221 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:54:52,222 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:54:52,222 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:54:52,222 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:52,222 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:54:52,222 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:54:52,222 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration12_Loop [2021-10-28 23:54:52,222 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:54:52,222 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:54:52,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:52,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:52,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:52,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:52,277 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:54:52,278 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:54:52,278 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:52,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:52,279 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:52,290 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 [2021-10-28 23:54:52,299 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:52,300 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:52,300 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:52,300 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:52,300 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:52,301 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:54:52,301 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:52,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-28 23:54:52,313 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:54:52,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:52,350 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:52,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:52,351 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:52,353 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 [2021-10-28 23:54:52,363 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:52,363 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:52,363 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:52,363 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:52,363 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:52,364 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:54:52,364 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:52,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-28 23:54:52,377 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:54:52,381 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:54:52,381 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:54:52,381 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:52,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:52,385 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:52,387 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:54:52,387 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:54:52,387 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:54:52,387 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 23 Supporting invariants [] [2021-10-28 23:54:52,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-28 23:54:52,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:52,428 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:54:52,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:52,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:54:52,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:52,507 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:54:52,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:52,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:52,508 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-28 23:54:52,509 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-10-28 23:54:52,522 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 29 states and 33 transitions. Complement of second has 5 states. [2021-10-28 23:54:52,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 23:54:52,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-10-28 23:54:52,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-10-28 23:54:52,523 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 14 letters. Loop has 1 letters. [2021-10-28 23:54:52,523 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:52,523 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:54:52,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:52,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:54:52,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:52,594 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:54:52,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:52,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:52,595 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-28 23:54:52,595 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-10-28 23:54:52,603 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 29 states and 33 transitions. Complement of second has 5 states. [2021-10-28 23:54:52,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 23:54:52,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-10-28 23:54:52,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-10-28 23:54:52,605 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 14 letters. Loop has 1 letters. [2021-10-28 23:54:52,605 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:52,605 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:54:52,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:52,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:54:52,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:52,678 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:54:52,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:52,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:52,679 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-28 23:54:52,680 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-10-28 23:54:52,689 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 18 states and 20 transitions. Complement of second has 4 states. [2021-10-28 23:54:52,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 23:54:52,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-10-28 23:54:52,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-28 23:54:52,690 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 14 letters. Loop has 1 letters. [2021-10-28 23:54:52,691 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:52,691 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 15 letters. Loop has 1 letters. [2021-10-28 23:54:52,692 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:52,692 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 14 letters. Loop has 2 letters. [2021-10-28 23:54:52,692 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:52,692 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 20 transitions. [2021-10-28 23:54:52,693 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:54:52,693 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2021-10-28 23:54:52,693 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 23:54:52,693 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 23:54:52,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 23:54:52,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:54:52,693 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:54:52,693 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:54:52,693 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:54:52,693 INFO L425 BuchiCegarLoop]: ======== Iteration 13============ [2021-10-28 23:54:52,693 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:54:52,694 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:54:52,694 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 23:54:52,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:54:52 BoogieIcfgContainer [2021-10-28 23:54:52,700 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:54:52,700 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:54:52,700 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:54:52,700 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:54:52,701 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:54:46" (3/4) ... [2021-10-28 23:54:52,704 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:54:52,704 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:54:52,705 INFO L168 Benchmark]: Toolchain (without parser) took 6984.52 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 68.8 MB in the beginning and 44.3 MB in the end (delta: 24.5 MB). Peak memory consumption was 47.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:54:52,706 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory is still 53.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:54:52,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.53 ms. Allocated memory is still 98.6 MB. Free memory was 68.6 MB in the beginning and 74.8 MB in the end (delta: -6.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:54:52,706 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.46 ms. Allocated memory is still 98.6 MB. Free memory was 74.8 MB in the beginning and 73.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:54:52,707 INFO L168 Benchmark]: Boogie Preprocessor took 27.52 ms. Allocated memory is still 98.6 MB. Free memory was 73.6 MB in the beginning and 72.7 MB in the end (delta: 893.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:54:52,707 INFO L168 Benchmark]: RCFGBuilder took 283.21 ms. Allocated memory is still 98.6 MB. Free memory was 72.7 MB in the beginning and 64.7 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:54:52,708 INFO L168 Benchmark]: BuchiAutomizer took 6320.75 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 64.7 MB in the beginning and 44.3 MB in the end (delta: 20.3 MB). Peak memory consumption was 46.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:54:52,708 INFO L168 Benchmark]: Witness Printer took 4.01 ms. Allocated memory is still 121.6 MB. Free memory is still 44.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:54:52,710 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory is still 53.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 301.53 ms. Allocated memory is still 98.6 MB. Free memory was 68.6 MB in the beginning and 74.8 MB in the end (delta: -6.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.46 ms. Allocated memory is still 98.6 MB. Free memory was 74.8 MB in the beginning and 73.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.52 ms. Allocated memory is still 98.6 MB. Free memory was 73.6 MB in the beginning and 72.7 MB in the end (delta: 893.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 283.21 ms. Allocated memory is still 98.6 MB. Free memory was 72.7 MB in the beginning and 64.7 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 6320.75 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 64.7 MB in the beginning and 44.3 MB in the end (delta: 20.3 MB). Peak memory consumption was 46.3 MB. Max. memory is 16.1 GB. * Witness Printer took 4.01 ms. Allocated memory is still 121.6 MB. Free memory is still 44.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (9 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 19 + -2 * i and consists of 3 locations. One deterministic module has affine ranking function 23 + -2 * j and consists of 3 locations. One nondeterministic module has affine ranking function 23 + -2 * j and consists of 3 locations. 9 modules have a trivial ranking function, the largest among these consists of 11 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.2s and 13 iterations. TraceHistogramMax:9. Analysis of lassos took 5.2s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 10. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 21 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 10. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 45/45 HoareTripleCheckerStatistics: 62 SDtfs, 18 SDslu, 28 SDs, 0 SdLazy, 113 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI9 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax172 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 49ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 23:54:52,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:52,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-10-28 23:54:53,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:53,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-28 23:54:53,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:53,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-28 23:54:53,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-28 23:54:54,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-10-28 23:54:54,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-28 23:54:54,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-28 23:54:54,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d33991-b42f-4299-88d7-16df209c7ed4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...