./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa --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 ef399329f84d2482fbc6cd637d6b986ccb5018221a1a0504f889d0bed5430f95 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:27:04,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:27:04,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:27:04,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:27:04,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:27:04,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:27:04,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:27:04,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:27:04,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:27:04,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:27:04,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:27:04,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:27:04,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:27:04,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:27:04,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:27:04,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:27:04,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:27:04,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:27:04,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:27:04,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:27:04,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:27:04,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:27:04,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:27:04,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:27:04,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:27:04,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:27:04,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:27:04,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:27:04,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:27:04,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:27:04,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:27:04,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:27:04,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:27:04,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:27:04,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:27:04,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:27:04,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:27:04,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:27:04,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:27:04,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:27:04,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:27:04,389 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-06 20:27:04,410 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:27:04,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:27:04,410 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:27:04,410 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:27:04,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:27:04,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:27:04,412 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:27:04,412 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-06 20:27:04,412 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-06 20:27:04,412 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-06 20:27:04,412 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-06 20:27:04,412 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-06 20:27:04,412 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-06 20:27:04,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:27:04,413 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 20:27:04,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:27:04,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:27:04,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-06 20:27:04,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-06 20:27:04,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-06 20:27:04,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:27:04,414 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-06 20:27:04,414 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:27:04,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-06 20:27:04,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:27:04,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:27:04,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:27:04,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:27:04,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:27:04,416 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-06 20:27:04,416 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_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef399329f84d2482fbc6cd637d6b986ccb5018221a1a0504f889d0bed5430f95 [2021-12-06 20:27:04,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:27:04,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:27:04,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:27:04,631 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:27:04,632 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:27:04,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c [2021-12-06 20:27:04,675 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/data/a0015907e/68598515e1c041e8804ea6e676012c4d/FLAGc4b3c65c4 [2021-12-06 20:27:05,038 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:27:05,038 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c [2021-12-06 20:27:05,042 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/data/a0015907e/68598515e1c041e8804ea6e676012c4d/FLAGc4b3c65c4 [2021-12-06 20:27:05,055 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/data/a0015907e/68598515e1c041e8804ea6e676012c4d [2021-12-06 20:27:05,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:27:05,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:27:05,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:27:05,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:27:05,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:27:05,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:27:05" (1/1) ... [2021-12-06 20:27:05,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1172a9a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:05, skipping insertion in model container [2021-12-06 20:27:05,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:27:05" (1/1) ... [2021-12-06 20:27:05,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:27:05,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:27:05,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:27:05,197 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:27:05,206 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:27:05,214 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:27:05,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:05 WrapperNode [2021-12-06 20:27:05,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:27:05,215 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:27:05,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:27:05,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:27:05,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:05" (1/1) ... [2021-12-06 20:27:05,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:05" (1/1) ... [2021-12-06 20:27:05,235 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2021-12-06 20:27:05,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:27:05,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:27:05,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:27:05,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:27:05,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:05" (1/1) ... [2021-12-06 20:27:05,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:05" (1/1) ... [2021-12-06 20:27:05,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:05" (1/1) ... [2021-12-06 20:27:05,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:05" (1/1) ... [2021-12-06 20:27:05,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:05" (1/1) ... [2021-12-06 20:27:05,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:05" (1/1) ... [2021-12-06 20:27:05,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:05" (1/1) ... [2021-12-06 20:27:05,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:27:05,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:27:05,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:27:05,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:27:05,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:05" (1/1) ... [2021-12-06 20:27:05,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:05,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:05,270 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:05,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-06 20:27:05,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:27:05,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:27:05,349 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:27:05,350 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:27:05,393 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:27:05,399 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:27:05,400 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 20:27:05,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:27:05 BoogieIcfgContainer [2021-12-06 20:27:05,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:27:05,403 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-06 20:27:05,403 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-06 20:27:05,406 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-06 20:27:05,407 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 20:27:05,407 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.12 08:27:05" (1/3) ... [2021-12-06 20:27:05,408 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e6a389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 08:27:05, skipping insertion in model container [2021-12-06 20:27:05,408 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 20:27:05,408 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:05" (2/3) ... [2021-12-06 20:27:05,409 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e6a389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 08:27:05, skipping insertion in model container [2021-12-06 20:27:05,409 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 20:27:05,409 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:27:05" (3/3) ... [2021-12-06 20:27:05,410 INFO L388 chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig1.c [2021-12-06 20:27:05,454 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-06 20:27:05,454 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-06 20:27:05,454 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-06 20:27:05,454 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-06 20:27:05,454 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-06 20:27:05,454 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-06 20:27:05,455 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-06 20:27:05,455 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-06 20:27:05,466 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 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) [2021-12-06 20:27:05,482 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-06 20:27:05,482 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 20:27:05,482 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 20:27:05,487 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-06 20:27:05,487 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-06 20:27:05,488 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-06 20:27:05,488 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 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) [2021-12-06 20:27:05,489 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-06 20:27:05,489 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 20:27:05,489 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 20:27:05,489 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-06 20:27:05,489 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-06 20:27:05,494 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~i~0#1, main_~j~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~n~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 3#L19-2true [2021-12-06 20:27:05,494 INFO L793 eck$LassoCheckResult]: Loop: 3#L19-2true assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 7#L21-2true assume !(main_~j~0#1 <= main_~i~0#1); 5#L21-3true main_~i~0#1 := 1 + main_~i~0#1; 3#L19-2true [2021-12-06 20:27:05,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:05,499 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-06 20:27:05,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:05,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424387133] [2021-12-06 20:27:05,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:05,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:27:05,564 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:27:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:27:05,578 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:27:05,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:05,581 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2021-12-06 20:27:05,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:05,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608390153] [2021-12-06 20:27:05,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:05,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:27:05,593 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:27:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:27:05,600 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:27:05,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:05,601 INFO L85 PathProgramCache]: Analyzing trace with hash 28699886, now seen corresponding path program 1 times [2021-12-06 20:27:05,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:05,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393034727] [2021-12-06 20:27:05,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:05,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:27:05,611 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:27:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:27:05,618 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:27:05,678 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:27:05,678 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:27:05,679 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:27:05,679 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:27:05,679 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 20:27:05,679 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:05,679 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:27:05,679 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:27:05,679 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration1_Loop [2021-12-06 20:27:05,679 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:27:05,679 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:27:05,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:27:05,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:27:05,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:27:05,760 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:27:05,761 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 20:27:05,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:05,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:05,764 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:05,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-06 20:27:05,766 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:27:05,766 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:27:05,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-06 20:27:05,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:05,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:05,799 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:05,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-06 20:27:05,800 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 20:27:05,800 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:27:05,936 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 20:27:05,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-06 20:27:05,940 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:27:05,940 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:27:05,940 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:27:05,940 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:27:05,940 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 20:27:05,940 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:05,940 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:27:05,940 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:27:05,940 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration1_Loop [2021-12-06 20:27:05,940 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:27:05,940 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:27:05,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:27:05,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:27:05,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:27:05,978 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:27:05,981 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 20:27:05,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:05,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:05,983 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:05,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-06 20:27:05,984 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 [2021-12-06 20:27:05,992 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:27:05,992 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:27:05,993 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:27:05,993 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:27:05,998 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 20:27:05,998 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 20:27:06,004 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 20:27:06,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-06 20:27:06,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:06,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:06,036 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:06,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-06 20:27:06,037 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 [2021-12-06 20:27:06,046 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:27:06,046 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:27:06,046 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:27:06,046 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:27:06,049 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 20:27:06,049 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 20:27:06,053 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 20:27:06,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-12-06 20:27:06,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:06,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:06,086 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:06,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-06 20:27:06,087 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 [2021-12-06 20:27:06,095 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:27:06,095 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 20:27:06,095 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:27:06,095 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:27:06,095 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:27:06,097 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 20:27:06,097 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 20:27:06,099 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 20:27:06,109 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-06 20:27:06,109 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-06 20:27:06,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:06,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:06,111 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:06,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-06 20:27:06,112 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 20:27:06,113 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 20:27:06,113 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 20:27:06,113 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-06 20:27:06,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-06 20:27:06,134 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 20:27:06,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:06,155 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:27:06,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:27:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:06,165 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 20:27:06,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:27:06,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:27:06,226 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-06 20:27:06,227 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 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) Second operand has 4 states, 4 states have (on average 1.25) 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) [2021-12-06 20:27:06,273 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 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). Second operand has 4 states, 4 states have (on average 1.25) 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) Result 31 states and 49 transitions. Complement of second has 9 states. [2021-12-06 20:27:06,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-12-06 20:27:06,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) 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) [2021-12-06 20:27:06,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 29 transitions. [2021-12-06 20:27:06,279 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 2 letters. Loop has 3 letters. [2021-12-06 20:27:06,280 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:27:06,280 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-06 20:27:06,280 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:27:06,280 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 2 letters. Loop has 6 letters. [2021-12-06 20:27:06,280 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:27:06,281 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 49 transitions. [2021-12-06 20:27:06,283 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-06 20:27:06,285 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 14 states and 19 transitions. [2021-12-06 20:27:06,286 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-12-06 20:27:06,286 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-06 20:27:06,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2021-12-06 20:27:06,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 20:27:06,287 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-12-06 20:27:06,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2021-12-06 20:27:06,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-12-06 20:27:06,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 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) [2021-12-06 20:27:06,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2021-12-06 20:27:06,305 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2021-12-06 20:27:06,305 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2021-12-06 20:27:06,305 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-06 20:27:06,305 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 18 transitions. [2021-12-06 20:27:06,305 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-06 20:27:06,305 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 20:27:06,306 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 20:27:06,306 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-06 20:27:06,306 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-06 20:27:06,306 INFO L791 eck$LassoCheckResult]: Stem: 94#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 95#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~i~0#1, main_~j~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~n~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 98#L19-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 88#L21-2 [2021-12-06 20:27:06,306 INFO L793 eck$LassoCheckResult]: Loop: 88#L21-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := 1 + main_~j~0#1; 96#L21-2 assume !(main_~j~0#1 <= main_~i~0#1); 91#L21-3 main_~i~0#1 := 1 + main_~i~0#1; 87#L19-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 88#L21-2 [2021-12-06 20:27:06,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:06,306 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-06 20:27:06,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:06,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301204462] [2021-12-06 20:27:06,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:06,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:27:06,310 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:27:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:27:06,313 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:27:06,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:06,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1537394, now seen corresponding path program 1 times [2021-12-06 20:27:06,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:06,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740632700] [2021-12-06 20:27:06,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:06,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:27:06,318 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:27:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:27:06,322 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:27:06,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:06,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1810841241, now seen corresponding path program 1 times [2021-12-06 20:27:06,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:06,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534992495] [2021-12-06 20:27:06,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:06,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:27:06,329 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:27:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:27:06,334 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:27:06,361 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:27:06,362 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:27:06,362 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:27:06,362 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:27:06,362 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 20:27:06,362 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:06,362 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:27:06,362 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:27:06,362 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration2_Loop [2021-12-06 20:27:06,362 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:27:06,362 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:27:06,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:27:06,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:27:06,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:27:06,406 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:27:06,407 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 20:27:06,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:06,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:06,408 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:06,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-06 20:27:06,409 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:27:06,410 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:27:06,427 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 20:27:06,428 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: [] [2021-12-06 20:27:06,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-06 20:27:06,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:06,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:06,448 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:06,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-06 20:27:06,449 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:27:06,450 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:27:06,463 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 20:27:06,463 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: [] [2021-12-06 20:27:06,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-12-06 20:27:06,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:06,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:06,482 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:06,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-06 20:27:06,484 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:27:06,484 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:27:06,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-06 20:27:06,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:06,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:06,514 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:06,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-06 20:27:06,515 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 20:27:06,515 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:27:06,642 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 20:27:06,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2021-12-06 20:27:06,645 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:27:06,645 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:27:06,645 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:27:06,645 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:27:06,645 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 20:27:06,645 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:06,645 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:27:06,646 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:27:06,646 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration2_Loop [2021-12-06 20:27:06,646 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:27:06,646 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:27:06,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:27:06,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:27:06,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:27:06,682 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:27:06,682 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 20:27:06,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:06,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:06,683 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:06,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-06 20:27:06,706 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:27:06,714 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:27:06,714 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:27:06,714 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:27:06,715 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:27:06,717 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 20:27:06,717 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 20:27:06,719 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 20:27:06,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-12-06 20:27:06,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:06,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:06,739 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:06,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-06 20:27:06,740 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 [2021-12-06 20:27:06,748 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:27:06,748 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:27:06,748 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:27:06,748 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:27:06,750 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 20:27:06,750 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 20:27:06,753 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 20:27:06,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-12-06 20:27:06,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:06,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:06,773 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:06,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-06 20:27:06,774 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:27:06,784 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:27:06,784 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 20:27:06,784 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:27:06,784 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:27:06,784 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:27:06,785 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 20:27:06,785 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 20:27:06,788 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 20:27:06,791 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 20:27:06,791 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-06 20:27:06,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:06,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:06,792 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:06,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-06 20:27:06,793 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 20:27:06,794 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 20:27:06,794 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 20:27:06,794 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2021-12-06 20:27:06,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-12-06 20:27:06,813 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 20:27:06,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:06,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:27:06,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:27:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:06,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 20:27:06,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:27:06,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 20:27:06,842 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 [2021-12-06 20:27:06,842 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 7 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:27:06,855 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 7. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 23 states and 32 transitions. Complement of second has 6 states. [2021-12-06 20:27:06,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-06 20:27:06,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:27:06,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-12-06 20:27:06,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 4 letters. [2021-12-06 20:27:06,856 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:27:06,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 4 letters. [2021-12-06 20:27:06,856 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:27:06,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 8 letters. [2021-12-06 20:27:06,857 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:27:06,857 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 32 transitions. [2021-12-06 20:27:06,858 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-06 20:27:06,858 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 16 states and 23 transitions. [2021-12-06 20:27:06,858 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-12-06 20:27:06,858 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-12-06 20:27:06,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 23 transitions. [2021-12-06 20:27:06,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 20:27:06,858 INFO L681 BuchiCegarLoop]: Abstraction has 16 states and 23 transitions. [2021-12-06 20:27:06,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 23 transitions. [2021-12-06 20:27:06,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-12-06 20:27:06,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:27:06,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2021-12-06 20:27:06,860 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2021-12-06 20:27:06,860 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2021-12-06 20:27:06,860 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-06 20:27:06,860 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 22 transitions. [2021-12-06 20:27:06,861 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-06 20:27:06,861 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 20:27:06,861 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 20:27:06,861 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-06 20:27:06,861 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-06 20:27:06,861 INFO L791 eck$LassoCheckResult]: Stem: 172#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 173#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~i~0#1, main_~j~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~n~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 167#L19-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 168#L21-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := 1 + main_~j~0#1; 174#L21-2 [2021-12-06 20:27:06,861 INFO L793 eck$LassoCheckResult]: Loop: 174#L21-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := 1 + main_~j~0#1; 174#L21-2 [2021-12-06 20:27:06,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:06,861 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2021-12-06 20:27:06,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:06,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287545505] [2021-12-06 20:27:06,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:06,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:27:06,865 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:27:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:27:06,868 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:27:06,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:06,868 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2021-12-06 20:27:06,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:06,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540161067] [2021-12-06 20:27:06,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:06,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:27:06,871 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:27:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:27:06,873 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:27:06,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:06,873 INFO L85 PathProgramCache]: Analyzing trace with hash 28699944, now seen corresponding path program 2 times [2021-12-06 20:27:06,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:06,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734016403] [2021-12-06 20:27:06,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:06,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:27:06,878 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:27:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:27:06,881 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:27:06,888 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:27:06,889 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:27:06,889 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:27:06,889 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:27:06,889 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 20:27:06,889 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:06,889 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:27:06,889 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:27:06,889 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration3_Loop [2021-12-06 20:27:06,889 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:27:06,889 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:27:06,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:27:06,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:27:06,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:27:06,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-12-06 20:27:06,921 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:27:06,921 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 20:27:06,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:06,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:06,922 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:06,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-06 20:27:06,923 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:27:06,923 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:27:06,936 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 20:27:06,937 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: [] [2021-12-06 20:27:06,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-12-06 20:27:06,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-12-06 20:27:06,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:06,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:06,956 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:06,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-06 20:27:06,957 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:27:06,957 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:27:06,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-12-06 20:27:06,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:06,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:06,985 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:06,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-06 20:27:06,986 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 20:27:06,986 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:27:07,125 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 20:27:07,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2021-12-06 20:27:07,128 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:27:07,128 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:27:07,128 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:27:07,128 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:27:07,128 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 20:27:07,128 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:07,128 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:27:07,128 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:27:07,128 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration3_Loop [2021-12-06 20:27:07,128 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:27:07,128 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:27:07,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:27:07,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:27:07,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:27:07,150 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:27:07,150 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 20:27:07,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:07,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:07,151 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:07,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-06 20:27:07,152 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 [2021-12-06 20:27:07,159 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:27:07,159 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:27:07,159 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:27:07,159 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:27:07,161 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 20:27:07,161 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 20:27:07,164 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 20:27:07,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-12-06 20:27:07,183 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:07,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:07,184 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:07,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-06 20:27:07,185 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 [2021-12-06 20:27:07,192 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:27:07,193 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 20:27:07,193 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:27:07,193 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:27:07,193 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:27:07,194 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 20:27:07,194 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 20:27:07,195 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 20:27:07,197 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 20:27:07,197 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-06 20:27:07,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:07,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:07,198 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:07,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-06 20:27:07,199 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 20:27:07,200 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 20:27:07,200 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 20:27:07,200 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~j~0#1) = 2*ULTIMATE.start_main_~i~0#1 - 2*ULTIMATE.start_main_~j~0#1 + 1 Supporting invariants [] [2021-12-06 20:27:07,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-12-06 20:27:07,218 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 20:27:07,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:07,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:27:07,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:27:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:07,236 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 20:27:07,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:27:07,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:27:07,236 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 [2021-12-06 20:27:07,237 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 10 Second operand has 2 states, 2 states have (on average 2.5) 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) [2021-12-06 20:27:07,243 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 10. Second operand has 2 states, 2 states have (on average 2.5) 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 27 states and 39 transitions. Complement of second has 5 states. [2021-12-06 20:27:07,244 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 [2021-12-06 20:27:07,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.5) 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) [2021-12-06 20:27:07,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-12-06 20:27:07,245 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 1 letters. [2021-12-06 20:27:07,245 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:27:07,245 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 5 letters. Loop has 1 letters. [2021-12-06 20:27:07,245 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:27:07,245 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2021-12-06 20:27:07,245 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:27:07,246 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 39 transitions. [2021-12-06 20:27:07,247 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-06 20:27:07,247 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 23 states and 34 transitions. [2021-12-06 20:27:07,247 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-12-06 20:27:07,247 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-12-06 20:27:07,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 34 transitions. [2021-12-06 20:27:07,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 20:27:07,247 INFO L681 BuchiCegarLoop]: Abstraction has 23 states and 34 transitions. [2021-12-06 20:27:07,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 34 transitions. [2021-12-06 20:27:07,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2021-12-06 20:27:07,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:27:07,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 28 transitions. [2021-12-06 20:27:07,249 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 28 transitions. [2021-12-06 20:27:07,249 INFO L587 BuchiCegarLoop]: Abstraction has 19 states and 28 transitions. [2021-12-06 20:27:07,249 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-06 20:27:07,249 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 28 transitions. [2021-12-06 20:27:07,250 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-06 20:27:07,250 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 20:27:07,250 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 20:27:07,251 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2021-12-06 20:27:07,251 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-06 20:27:07,251 INFO L791 eck$LassoCheckResult]: Stem: 250#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 251#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~i~0#1, main_~j~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~n~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 244#L19-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 245#L21-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := 1 + main_~j~0#1; 252#L21-2 assume !(main_~j~0#1 <= main_~i~0#1); 261#L21-3 main_~i~0#1 := 1 + main_~i~0#1; 259#L19-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 255#L21-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := 1 + main_~j~0#1; 254#L21-2 [2021-12-06 20:27:07,251 INFO L793 eck$LassoCheckResult]: Loop: 254#L21-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := 1 + main_~j~0#1; 254#L21-2 [2021-12-06 20:27:07,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:07,252 INFO L85 PathProgramCache]: Analyzing trace with hash 301503643, now seen corresponding path program 2 times [2021-12-06 20:27:07,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:07,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076004181] [2021-12-06 20:27:07,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:07,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:27:07,257 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:27:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:27:07,262 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:27:07,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:07,262 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2021-12-06 20:27:07,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:07,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719150884] [2021-12-06 20:27:07,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:07,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:27:07,265 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:27:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:27:07,267 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:27:07,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:07,267 INFO L85 PathProgramCache]: Analyzing trace with hash 756678361, now seen corresponding path program 3 times [2021-12-06 20:27:07,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:07,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579896114] [2021-12-06 20:27:07,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:07,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:27:07,273 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:27:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:27:07,278 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:27:07,286 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:27:07,287 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:27:07,287 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:27:07,287 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:27:07,287 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 20:27:07,287 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:07,287 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:27:07,287 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:27:07,287 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration4_Loop [2021-12-06 20:27:07,287 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:27:07,287 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:27:07,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:27:07,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:27:07,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:27:07,310 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:27:07,310 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 20:27:07,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:07,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:07,311 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:07,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-12-06 20:27:07,313 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:27:07,313 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:27:07,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2021-12-06 20:27:07,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:07,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:07,357 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:07,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-12-06 20:27:07,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 20:27:07,358 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:27:07,497 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 20:27:07,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-12-06 20:27:07,500 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:27:07,500 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:27:07,500 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:27:07,500 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:27:07,500 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 20:27:07,500 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:07,500 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:27:07,500 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:27:07,500 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration4_Loop [2021-12-06 20:27:07,500 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:27:07,500 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:27:07,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:27:07,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:27:07,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:27:07,521 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:27:07,521 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 20:27:07,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:07,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:07,522 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:07,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-12-06 20:27:07,523 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 [2021-12-06 20:27:07,531 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:27:07,531 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 20:27:07,531 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:27:07,531 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:27:07,531 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:27:07,532 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 20:27:07,532 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 20:27:07,533 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 20:27:07,535 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 20:27:07,535 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-06 20:27:07,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:27:07,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:07,536 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:07,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-12-06 20:27:07,539 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 20:27:07,539 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 20:27:07,539 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 20:27:07,539 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~j~0#1 + 2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2021-12-06 20:27:07,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-12-06 20:27:07,558 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 20:27:07,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:07,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:27:07,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:27:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:07,579 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 20:27:07,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:27:07,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:27:07,580 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 [2021-12-06 20:27:07,580 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 28 transitions. cyclomatic complexity: 13 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:27:07,586 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 28 transitions. cyclomatic complexity: 13. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 25 states and 36 transitions. Complement of second has 5 states. [2021-12-06 20:27:07,586 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 [2021-12-06 20:27:07,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:27:07,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-12-06 20:27:07,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2021-12-06 20:27:07,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:27:07,587 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 20:27:07,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:07,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:27:07,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:27:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:07,607 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 20:27:07,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:27:07,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:27:07,608 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 [2021-12-06 20:27:07,608 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 28 transitions. cyclomatic complexity: 13 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:27:07,613 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 28 transitions. cyclomatic complexity: 13. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 25 states and 36 transitions. Complement of second has 5 states. [2021-12-06 20:27:07,613 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 [2021-12-06 20:27:07,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:27:07,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-12-06 20:27:07,614 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2021-12-06 20:27:07,614 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:27:07,614 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 20:27:07,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:07,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:27:07,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:27:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:07,634 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 20:27:07,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:27:07,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:27:07,634 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 [2021-12-06 20:27:07,634 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 28 transitions. cyclomatic complexity: 13 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:27:07,640 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 28 transitions. cyclomatic complexity: 13. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 22 states and 31 transitions. Complement of second has 4 states. [2021-12-06 20:27:07,640 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 [2021-12-06 20:27:07,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:27:07,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-12-06 20:27:07,641 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 1 letters. [2021-12-06 20:27:07,641 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:27:07,641 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 1 letters. [2021-12-06 20:27:07,642 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:27:07,642 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 2 letters. [2021-12-06 20:27:07,642 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:27:07,642 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 31 transitions. [2021-12-06 20:27:07,643 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-06 20:27:07,643 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2021-12-06 20:27:07,643 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-06 20:27:07,643 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-06 20:27:07,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-06 20:27:07,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:27:07,643 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 20:27:07,643 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 20:27:07,643 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 20:27:07,643 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-06 20:27:07,643 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-06 20:27:07,643 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-06 20:27:07,643 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-06 20:27:07,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.12 08:27:07 BoogieIcfgContainer [2021-12-06 20:27:07,648 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-06 20:27:07,648 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 20:27:07,648 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 20:27:07,649 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 20:27:07,649 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:27:05" (3/4) ... [2021-12-06 20:27:07,651 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 20:27:07,651 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 20:27:07,651 INFO L158 Benchmark]: Toolchain (without parser) took 2592.80ms. Allocated memory is still 109.1MB. Free memory was 72.9MB in the beginning and 45.8MB in the end (delta: 27.1MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. [2021-12-06 20:27:07,652 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 109.1MB. Free memory is still 89.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 20:27:07,652 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.50ms. Allocated memory is still 109.1MB. Free memory was 72.7MB in the beginning and 86.4MB in the end (delta: -13.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 20:27:07,652 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.86ms. Allocated memory is still 109.1MB. Free memory was 86.4MB in the beginning and 85.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 20:27:07,653 INFO L158 Benchmark]: Boogie Preprocessor took 11.30ms. Allocated memory is still 109.1MB. Free memory was 85.0MB in the beginning and 84.4MB in the end (delta: 611.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 20:27:07,653 INFO L158 Benchmark]: RCFGBuilder took 154.54ms. Allocated memory is still 109.1MB. Free memory was 83.9MB in the beginning and 76.4MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-06 20:27:07,653 INFO L158 Benchmark]: BuchiAutomizer took 2245.46ms. Allocated memory is still 109.1MB. Free memory was 76.0MB in the beginning and 46.4MB in the end (delta: 29.5MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. [2021-12-06 20:27:07,654 INFO L158 Benchmark]: Witness Printer took 2.44ms. Allocated memory is still 109.1MB. Free memory was 46.4MB in the beginning and 45.8MB in the end (delta: 647.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 20:27:07,656 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 109.1MB. Free memory is still 89.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 154.50ms. Allocated memory is still 109.1MB. Free memory was 72.7MB in the beginning and 86.4MB in the end (delta: -13.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.86ms. Allocated memory is still 109.1MB. Free memory was 86.4MB in the beginning and 85.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 11.30ms. Allocated memory is still 109.1MB. Free memory was 85.0MB in the beginning and 84.4MB in the end (delta: 611.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 154.54ms. Allocated memory is still 109.1MB. Free memory was 83.9MB in the beginning and 76.4MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 2245.46ms. Allocated memory is still 109.1MB. Free memory was 76.0MB in the beginning and 46.4MB in the end (delta: 29.5MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. * Witness Printer took 2.44ms. Allocated memory is still 109.1MB. Free memory was 46.4MB in the beginning and 45.8MB in the end (delta: 647.9kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * i and consists of 6 locations. One deterministic module has affine ranking function -1 * i + n and consists of 4 locations. One deterministic module has affine ranking function -2 * j + 2 * i + 1 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * j + 2 * i + 1 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.2s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 19 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37 mSDsluCounter, 41 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50 IncrementalHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 32 mSDtfsCounter, 50 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax193 hnf100 lsp52 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq157 hnf93 smp100 dnf100 smp100 tf110 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-06 20:27:07,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-12-06 20:27:07,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2021-12-06 20:27:08,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bcf67-49d2-4a6d-8623-233ac28c8b54/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE