./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/MinusUserDefined.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/MinusUserDefined.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg --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 096bafbba8d51323312e8aef69baa45c66c17c65b2ec8717873d6ff292690721 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:31:43,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:31:43,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:31:43,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:31:43,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:31:43,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:31:43,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:31:43,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:31:43,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:31:43,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:31:43,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:31:43,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:31:43,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:31:43,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:31:43,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:31:43,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:31:43,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:31:43,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:31:43,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:31:43,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:31:43,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:31:43,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:31:43,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:31:43,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:31:43,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:31:43,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:31:43,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:31:43,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:31:43,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:31:43,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:31:43,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:31:43,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:31:43,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:31:43,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:31:43,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:31:43,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:31:43,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:31:43,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:31:43,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:31:43,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:31:43,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:31:43,466 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 09:31:43,522 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:31:43,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:31:43,523 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:31:43,523 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:31:43,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:31:43,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:31:43,526 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:31:43,526 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:31:43,526 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:31:43,527 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:31:43,527 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:31:43,527 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:31:43,528 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:31:43,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:31:43,528 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:31:43,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:31:43,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:31:43,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:31:43,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:31:43,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:31:43,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:31:43,530 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:31:43,531 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:31:43,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:31:43,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:31:43,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:31:43,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:31:43,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:31:43,533 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:31:43,534 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:31:43,534 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_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 096bafbba8d51323312e8aef69baa45c66c17c65b2ec8717873d6ff292690721 [2021-10-28 09:31:43,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:31:43,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:31:43,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:31:43,924 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:31:43,925 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:31:43,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/termination-restricted-15/MinusUserDefined.c [2021-10-28 09:31:44,071 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/data/5fb82b121/f3fc8875b7084f7cb1e6cdda23e11a22/FLAG25ec7e8f2 [2021-10-28 09:31:44,672 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:31:44,673 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/sv-benchmarks/c/termination-restricted-15/MinusUserDefined.c [2021-10-28 09:31:44,688 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/data/5fb82b121/f3fc8875b7084f7cb1e6cdda23e11a22/FLAG25ec7e8f2 [2021-10-28 09:31:45,035 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/data/5fb82b121/f3fc8875b7084f7cb1e6cdda23e11a22 [2021-10-28 09:31:45,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:31:45,042 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:31:45,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:31:45,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:31:45,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:31:45,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:31:45" (1/1) ... [2021-10-28 09:31:45,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24ee6ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:45, skipping insertion in model container [2021-10-28 09:31:45,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:31:45" (1/1) ... [2021-10-28 09:31:45,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:31:45,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:31:45,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:31:45,256 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:31:45,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:31:45,293 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:31:45,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:45 WrapperNode [2021-10-28 09:31:45,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:31:45,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:31:45,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:31:45,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:31:45,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:45" (1/1) ... [2021-10-28 09:31:45,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:45" (1/1) ... [2021-10-28 09:31:45,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:31:45,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:31:45,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:31:45,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:31:45,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:45" (1/1) ... [2021-10-28 09:31:45,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:45" (1/1) ... [2021-10-28 09:31:45,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:45" (1/1) ... [2021-10-28 09:31:45,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:45" (1/1) ... [2021-10-28 09:31:45,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:45" (1/1) ... [2021-10-28 09:31:45,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:45" (1/1) ... [2021-10-28 09:31:45,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:45" (1/1) ... [2021-10-28 09:31:45,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:31:45,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:31:45,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:31:45,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:31:45,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:45" (1/1) ... [2021-10-28 09:31:45,412 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:31:45,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:31:45,458 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:31:45,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:31:45,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:31:45,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:31:45,760 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:31:45,761 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-28 09:31:45,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:31:45 BoogieIcfgContainer [2021-10-28 09:31:45,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:31:45,764 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:31:45,764 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:31:45,769 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:31:45,770 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:31:45,770 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:31:45" (1/3) ... [2021-10-28 09:31:45,771 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4be360ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:31:45, skipping insertion in model container [2021-10-28 09:31:45,771 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:31:45,772 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:45" (2/3) ... [2021-10-28 09:31:45,772 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4be360ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:31:45, skipping insertion in model container [2021-10-28 09:31:45,772 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:31:45,773 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:31:45" (3/3) ... [2021-10-28 09:31:45,775 INFO L389 chiAutomizerObserver]: Analyzing ICFG MinusUserDefined.c [2021-10-28 09:31:45,856 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:31:45,857 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:31:45,857 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:31:45,857 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:31:45,857 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:31:45,857 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:31:45,857 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:31:45,858 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:31:45,876 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:31:45,900 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2021-10-28 09:31:45,901 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:31:45,901 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:31:45,909 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 09:31:45,909 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-28 09:31:45,909 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:31:45,909 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:31:45,911 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2021-10-28 09:31:45,911 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:31:45,911 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:31:45,911 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 09:31:45,912 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-28 09:31:45,920 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 8#L13-2true [2021-10-28 09:31:45,921 INFO L793 eck$LassoCheckResult]: Loop: 8#L13-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 8#L13-2true [2021-10-28 09:31:45,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:45,929 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-28 09:31:45,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:31:45,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690522042] [2021-10-28 09:31:45,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:45,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:31:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:46,063 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:31:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:46,098 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:31:46,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:46,102 INFO L85 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2021-10-28 09:31:46,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:31:46,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827784646] [2021-10-28 09:31:46,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:46,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:31:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:46,127 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:31:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:46,145 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:31:46,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:46,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-28 09:31:46,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:31:46,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006725301] [2021-10-28 09:31:46,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:46,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:31:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:46,166 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:31:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:46,187 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:31:46,311 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:31:46,320 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:31:46,321 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:31:46,321 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:31:46,321 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:31:46,321 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:31:46,321 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:31:46,321 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:31:46,322 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration1_Loop [2021-10-28 09:31:46,322 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:31:46,322 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:31:46,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:46,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:46,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:46,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:46,523 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:31:46,524 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:31:46,526 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:31:46,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:31:46,529 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:31:46,534 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:31:46,535 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:31:46,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 09:31:46,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:31:46,571 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:31:46,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:31:46,573 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:31:46,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 09:31:46,575 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:31:46,575 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:31:46,618 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:31:46,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:31:46,629 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:31:46,629 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:31:46,629 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:31:46,629 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:31:46,629 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:31:46,629 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:31:46,629 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:31:46,629 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:31:46,630 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration1_Loop [2021-10-28 09:31:46,630 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:31:46,630 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:31:46,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:46,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:46,653 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:46,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:46,753 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:31:46,759 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:31:46,761 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:31:46,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:31:46,768 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:31:46,775 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:31:46,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 09:31:46,786 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:31:46,786 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:31:46,787 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:31:46,787 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:31:46,787 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:31:46,791 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:31:46,791 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:31:46,803 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:31:46,813 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 09:31:46,814 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:31:46,816 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:31:46,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:31:46,819 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:31:46,828 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:31:46,828 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:31:46,828 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:31:46,829 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-10-28 09:31:46,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 09:31:46,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:31:46,858 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:31:46,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:31:46,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:31:46,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:31:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:31:46,906 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:31:46,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:31:46,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:31:46,923 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-28 09:31:46,925 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 1.0) internal successors, (2), 1 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:31:47,035 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 2 states, 2 states have (on average 1.0) internal successors, (2), 1 states have internal predecessors, (2), 0 states have call successors, (0), 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 39 transitions. Complement of second has 5 states. [2021-10-28 09:31:47,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 09:31:47,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.0) internal successors, (2), 1 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:31:47,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2021-10-28 09:31:47,039 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 1 letters. Loop has 1 letters. [2021-10-28 09:31:47,040 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:31:47,040 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 2 letters. Loop has 1 letters. [2021-10-28 09:31:47,040 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:31:47,040 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 1 letters. Loop has 2 letters. [2021-10-28 09:31:47,041 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:31:47,042 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 39 transitions. [2021-10-28 09:31:47,044 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 09:31:47,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:31:47,074 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 9 states and 16 transitions. [2021-10-28 09:31:47,075 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-10-28 09:31:47,075 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-10-28 09:31:47,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 16 transitions. [2021-10-28 09:31:47,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:31:47,076 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 16 transitions. [2021-10-28 09:31:47,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 16 transitions. [2021-10-28 09:31:47,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2021-10-28 09:31:47,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:31:47,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2021-10-28 09:31:47,111 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 15 transitions. [2021-10-28 09:31:47,112 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 15 transitions. [2021-10-28 09:31:47,112 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:31:47,112 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 15 transitions. [2021-10-28 09:31:47,113 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 09:31:47,113 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:31:47,113 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:31:47,114 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:31:47,114 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:31:47,114 INFO L791 eck$LassoCheckResult]: Stem: 64#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 65#L13-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 60#L21-3 [2021-10-28 09:31:47,114 INFO L793 eck$LassoCheckResult]: Loop: 60#L21-3 assume !!(main_~x~0 > 0);main_~y~0 := 1 + main_~y~0;main_~res~0 := 1 + main_~res~0; 61#L21-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 60#L21-3 [2021-10-28 09:31:47,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:47,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1000, now seen corresponding path program 1 times [2021-10-28 09:31:47,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:31:47,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218960892] [2021-10-28 09:31:47,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:47,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:31:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:47,122 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:31:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:47,128 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:31:47,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:47,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1640, now seen corresponding path program 1 times [2021-10-28 09:31:47,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:31:47,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237822782] [2021-10-28 09:31:47,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:47,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:31:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:47,138 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:31:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:47,143 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:31:47,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:47,145 INFO L85 PathProgramCache]: Analyzing trace with hash 961679, now seen corresponding path program 1 times [2021-10-28 09:31:47,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:31:47,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487513366] [2021-10-28 09:31:47,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:47,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:31:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:47,154 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:31:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:47,161 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:31:47,204 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:31:47,204 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:31:47,204 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:31:47,204 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:31:47,204 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:31:47,205 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:31:47,205 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:31:47,205 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:31:47,205 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration2_Loop [2021-10-28 09:31:47,205 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:31:47,205 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:31:47,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:47,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:47,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:47,221 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:47,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:47,279 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:31:47,279 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:31:47,279 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:31:47,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:31:47,284 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:31:47,288 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:31:47,288 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:31:47,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 09:31:47,311 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:31:47,311 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:31:47,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:31:47,359 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:31:47,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:31:47,360 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:31:47,367 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:31:47,367 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:31:47,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 09:31:47,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:31:47,419 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:31:47,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:31:47,420 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:31:47,426 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:31:47,426 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:31:47,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 09:31:47,561 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:31:47,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:31:47,575 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:31:47,575 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:31:47,576 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:31:47,576 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:31:47,576 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:31:47,576 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:31:47,576 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:31:47,576 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:31:47,576 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration2_Loop [2021-10-28 09:31:47,576 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:31:47,576 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:31:47,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:47,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:47,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:47,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:47,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:47,678 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:31:47,679 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:31:47,679 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:31:47,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:31:47,684 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:31:47,691 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:31:47,702 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:31:47,703 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:31:47,703 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:31:47,703 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:31:47,709 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:31:47,710 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:31:47,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 09:31:47,732 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:31:47,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-10-28 09:31:47,766 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:31:47,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:31:47,767 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:31:47,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 09:31:47,770 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:31:47,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:31:47,778 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:31:47,779 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:31:47,779 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:31:47,779 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:31:47,781 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:31:47,781 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:31:47,807 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:31:47,819 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:31:47,819 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:31:47,820 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:31:47,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:31:47,824 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:31:47,827 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:31:47,827 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:31:47,827 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:31:47,827 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2021-10-28 09:31:47,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 09:31:47,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:31:47,875 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:31:47,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:31:47,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:31:47,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:31:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:31:47,917 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:31:47,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:31:47,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:31:47,995 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 09:31:47,996 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 15 transitions. cyclomatic complexity: 10 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:31:48,031 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 15 transitions. cyclomatic complexity: 10. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 22 states and 34 transitions. Complement of second has 7 states. [2021-10-28 09:31:48,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:31:48,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:31:48,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-10-28 09:31:48,034 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2021-10-28 09:31:48,034 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:31:48,034 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-28 09:31:48,035 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:31:48,035 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2021-10-28 09:31:48,036 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:31:48,036 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 34 transitions. [2021-10-28 09:31:48,042 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 09:31:48,045 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 15 states and 23 transitions. [2021-10-28 09:31:48,046 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-10-28 09:31:48,046 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-10-28 09:31:48,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 23 transitions. [2021-10-28 09:31:48,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:31:48,046 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2021-10-28 09:31:48,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 23 transitions. [2021-10-28 09:31:48,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-28 09:31:48,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:31:48,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2021-10-28 09:31:48,052 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2021-10-28 09:31:48,052 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2021-10-28 09:31:48,052 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:31:48,053 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 23 transitions. [2021-10-28 09:31:48,055 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 09:31:48,055 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:31:48,055 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:31:48,056 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2021-10-28 09:31:48,056 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:31:48,056 INFO L791 eck$LassoCheckResult]: Stem: 130#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 131#L13-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 132#L21-3 assume !!(main_~x~0 > 0);main_~y~0 := 1 + main_~y~0;main_~res~0 := 1 + main_~res~0; 140#L21-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 137#L21-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 135#L21-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 126#L21-3 [2021-10-28 09:31:48,057 INFO L793 eck$LassoCheckResult]: Loop: 126#L21-3 assume !!(main_~x~0 > 0);main_~y~0 := 1 + main_~y~0;main_~res~0 := 1 + main_~res~0; 127#L21-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 126#L21-3 [2021-10-28 09:31:48,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:48,058 INFO L85 PathProgramCache]: Analyzing trace with hash 924176399, now seen corresponding path program 1 times [2021-10-28 09:31:48,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:31:48,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636397870] [2021-10-28 09:31:48,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:48,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:31:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:31:48,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:31:48,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:31:48,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636397870] [2021-10-28 09:31:48,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636397870] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:31:48,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:31:48,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:31:48,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896846727] [2021-10-28 09:31:48,182 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:31:48,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:48,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1640, now seen corresponding path program 2 times [2021-10-28 09:31:48,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:31:48,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577973734] [2021-10-28 09:31:48,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:48,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:31:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:48,190 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:31:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:31:48,195 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:31:48,239 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:31:48,240 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:31:48,240 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:31:48,240 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:31:48,240 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:31:48,240 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:31:48,241 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:31:48,241 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:31:48,241 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration3_Loop [2021-10-28 09:31:48,241 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:31:48,241 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:31:48,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:48,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:48,254 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:48,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:48,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:48,320 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:31:48,321 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:31:48,321 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:31:48,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:31:48,324 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:31:48,340 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:31:48,340 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:31:48,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 09:31:48,364 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:31:48,364 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:31:48,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:31:48,409 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:31:48,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:31:48,411 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:31:48,419 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:31:48,419 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:31:48,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 09:31:48,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 09:31:48,488 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:31:48,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:31:48,489 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:31:48,499 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:31:48,499 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:31:48,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 09:31:48,636 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:31:48,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 09:31:48,643 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:31:48,643 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:31:48,643 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:31:48,643 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:31:48,643 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:31:48,643 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:31:48,643 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:31:48,643 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:31:48,643 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration3_Loop [2021-10-28 09:31:48,643 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:31:48,643 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:31:48,645 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:48,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:48,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:48,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:48,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:31:48,776 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:31:48,778 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:31:48,778 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:31:48,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:31:48,780 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:31:48,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 09:31:48,803 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:31:48,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:31:48,816 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:31:48,816 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:31:48,816 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:31:48,817 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:31:48,820 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:31:48,820 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:31:48,833 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:31:48,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:31:48,879 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:31:48,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:31:48,884 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:31:48,893 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:31:48,904 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:31:48,904 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:31:48,905 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:31:48,905 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:31:48,905 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:31:48,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 09:31:48,906 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:31:48,906 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:31:48,919 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:31:48,933 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 09:31:48,933 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:31:48,934 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:31:48,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:31:48,935 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:31:48,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 09:31:48,937 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:31:48,937 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:31:48,937 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:31:48,937 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2021-10-28 09:31:48,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:31:48,963 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:31:48,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:31:48,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:31:48,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:31:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:31:49,021 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:31:49,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:31:49,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:31:49,057 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 09:31:49,057 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:31:49,098 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 43 states and 65 transitions. Complement of second has 7 states. [2021-10-28 09:31:49,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:31:49,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:31:49,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-10-28 09:31:49,100 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2021-10-28 09:31:49,100 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:31:49,100 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2021-10-28 09:31:49,101 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:31:49,101 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2021-10-28 09:31:49,102 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:31:49,102 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 65 transitions. [2021-10-28 09:31:49,108 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 09:31:49,114 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 30 states and 45 transitions. [2021-10-28 09:31:49,115 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-10-28 09:31:49,116 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-10-28 09:31:49,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 45 transitions. [2021-10-28 09:31:49,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:31:49,118 INFO L681 BuchiCegarLoop]: Abstraction has 30 states and 45 transitions. [2021-10-28 09:31:49,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 45 transitions. [2021-10-28 09:31:49,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 19. [2021-10-28 09:31:49,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:31:49,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 30 transitions. [2021-10-28 09:31:49,125 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2021-10-28 09:31:49,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:31:49,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:31:49,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:31:49,130 INFO L87 Difference]: Start difference. First operand 19 states and 30 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:31:49,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:31:49,180 INFO L93 Difference]: Finished difference Result 13 states and 18 transitions. [2021-10-28 09:31:49,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:31:49,180 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2021-10-28 09:31:49,183 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 09:31:49,184 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2021-10-28 09:31:49,184 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 09:31:49,184 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 09:31:49,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 09:31:49,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:31:49,185 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:31:49,185 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:31:49,185 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:31:49,185 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:31:49,185 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:31:49,185 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 09:31:49,186 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 09:31:49,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:31:49 BoogieIcfgContainer [2021-10-28 09:31:49,193 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:31:49,194 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:31:49,194 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:31:49,195 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:31:49,195 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:31:45" (3/4) ... [2021-10-28 09:31:49,199 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:31:49,200 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:31:49,201 INFO L168 Benchmark]: Toolchain (without parser) took 4158.66 ms. Allocated memory is still 113.2 MB. Free memory was 77.4 MB in the beginning and 75.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:31:49,202 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 83.9 MB. Free memory is still 48.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:31:49,203 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.47 ms. Allocated memory is still 113.2 MB. Free memory was 77.1 MB in the beginning and 68.6 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:31:49,205 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.43 ms. Allocated memory is still 113.2 MB. Free memory was 68.6 MB in the beginning and 67.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:31:49,210 INFO L168 Benchmark]: Boogie Preprocessor took 52.90 ms. Allocated memory is still 113.2 MB. Free memory was 67.2 MB in the beginning and 66.3 MB in the end (delta: 901.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:31:49,211 INFO L168 Benchmark]: RCFGBuilder took 370.09 ms. Allocated memory is still 113.2 MB. Free memory was 66.2 MB in the beginning and 58.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:31:49,211 INFO L168 Benchmark]: BuchiAutomizer took 3429.40 ms. Allocated memory is still 113.2 MB. Free memory was 58.1 MB in the beginning and 75.7 MB in the end (delta: -17.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:31:49,213 INFO L168 Benchmark]: Witness Printer took 5.52 ms. Allocated memory is still 113.2 MB. Free memory is still 75.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:31:49,222 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 83.9 MB. Free memory is still 48.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 250.47 ms. Allocated memory is still 113.2 MB. Free memory was 77.1 MB in the beginning and 68.6 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.43 ms. Allocated memory is still 113.2 MB. Free memory was 68.6 MB in the beginning and 67.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.90 ms. Allocated memory is still 113.2 MB. Free memory was 67.2 MB in the beginning and 66.3 MB in the end (delta: 901.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 370.09 ms. Allocated memory is still 113.2 MB. Free memory was 66.2 MB in the beginning and 58.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3429.40 ms. Allocated memory is still 113.2 MB. Free memory was 58.1 MB in the beginning and 75.7 MB in the end (delta: -17.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.52 ms. Allocated memory is still 113.2 MB. Free memory is still 75.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function -1 * y and consists of 4 locations. One deterministic module has affine ranking function -1 * y and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 16 SDtfs, 18 SDslu, 3 SDs, 0 SdLazy, 49 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax166 hnf100 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 52ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 09:31:49,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 09:31:49,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8242d381-7848-4b06-b4d8-e66dfdcb910f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...