./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Flip.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_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Flip.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d9e2051c5b6571a6a73804cb724a9fb9a88e5e404b5e850e3a8c166e2eba4aad ................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:27:55,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:27:55,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:27:55,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:27:55,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:27:55,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:27:55,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:27:55,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:27:55,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:27:55,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:27:55,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:27:55,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:27:55,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:27:55,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:27:55,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:27:55,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:27:55,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:27:55,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:27:55,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:27:55,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:27:55,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:27:55,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:27:55,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:27:55,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:27:55,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:27:55,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:27:55,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:27:55,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:27:55,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:27:55,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:27:55,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:27:55,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:27:55,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:27:55,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:27:55,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:27:55,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:27:55,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:27:55,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:27:55,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:27:55,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:27:55,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:27:55,473 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 23:27:55,503 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:27:55,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:27:55,507 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:27:55,507 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:27:55,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:27:55,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:27:55,509 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:27:55,509 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:27:55,509 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:27:55,509 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:27:55,510 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:27:55,511 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:27:55,511 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:27:55,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:27:55,511 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:27:55,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:27:55,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:27:55,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:27:55,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:27:55,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:27:55,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:27:55,513 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:27:55,513 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:27:55,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:27:55,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:27:55,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:27:55,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:27:55,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:27:55,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:27:55,517 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:27:55,517 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_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9e2051c5b6571a6a73804cb724a9fb9a88e5e404b5e850e3a8c166e2eba4aad [2021-10-28 23:27:55,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:27:55,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:27:55,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:27:55,852 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:27:55,852 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:27:55,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/termination-restricted-15/Flip.c [2021-10-28 23:27:55,926 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/data/7fcc36355/b5838d2322cd4f97b9ea19b4e2c331eb/FLAGc7901b72b [2021-10-28 23:27:56,301 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:27:56,302 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/sv-benchmarks/c/termination-restricted-15/Flip.c [2021-10-28 23:27:56,307 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/data/7fcc36355/b5838d2322cd4f97b9ea19b4e2c331eb/FLAGc7901b72b [2021-10-28 23:27:56,730 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/data/7fcc36355/b5838d2322cd4f97b9ea19b4e2c331eb [2021-10-28 23:27:56,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:27:56,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:27:56,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:27:56,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:27:56,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:27:56,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:27:56" (1/1) ... [2021-10-28 23:27:56,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f723375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:56, skipping insertion in model container [2021-10-28 23:27:56,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:27:56" (1/1) ... [2021-10-28 23:27:56,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:27:56,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:27:56,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:27:56,919 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:27:56,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:27:56,942 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:27:56,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:56 WrapperNode [2021-10-28 23:27:56,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:27:56,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:27:56,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:27:56,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:27:56,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:56" (1/1) ... [2021-10-28 23:27:56,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:56" (1/1) ... [2021-10-28 23:27:56,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:27:56,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:27:56,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:27:56,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:27:57,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:56" (1/1) ... [2021-10-28 23:27:57,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:56" (1/1) ... [2021-10-28 23:27:57,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:56" (1/1) ... [2021-10-28 23:27:57,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:56" (1/1) ... [2021-10-28 23:27:57,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:56" (1/1) ... [2021-10-28 23:27:57,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:56" (1/1) ... [2021-10-28 23:27:57,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:56" (1/1) ... [2021-10-28 23:27:57,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:27:57,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:27:57,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:27:57,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:27:57,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:56" (1/1) ... [2021-10-28 23:27:57,035 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:27:57,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:27:57,062 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:27:57,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:27:57,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:27:57,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:27:57,240 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:27:57,240 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 23:27:57,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:27:57 BoogieIcfgContainer [2021-10-28 23:27:57,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:27:57,246 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:27:57,247 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:27:57,250 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:27:57,252 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:27:57,252 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:27:56" (1/3) ... [2021-10-28 23:27:57,254 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34d4e959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:27:57, skipping insertion in model container [2021-10-28 23:27:57,254 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:27:57,254 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:56" (2/3) ... [2021-10-28 23:27:57,256 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34d4e959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:27:57, skipping insertion in model container [2021-10-28 23:27:57,256 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:27:57,256 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:27:57" (3/3) ... [2021-10-28 23:27:57,258 INFO L389 chiAutomizerObserver]: Analyzing ICFG Flip.c [2021-10-28 23:27:57,307 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:27:57,307 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:27:57,307 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:27:57,308 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:27:57,308 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:27:57,308 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:27:57,308 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:27:57,308 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:27:57,320 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:27:57,331 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-28 23:27:57,331 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:27:57,331 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:27:57,336 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:27:57,336 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-28 23:27:57,337 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:27:57,337 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:27:57,340 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-28 23:27:57,340 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:27:57,341 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:27:57,341 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:27:57,341 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-28 23:27:57,348 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~j~0, main_~t~0;havoc main_~i~0;havoc main_~j~0;havoc main_~t~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~t~0 := 0; 5#L13-2true [2021-10-28 23:27:57,348 INFO L793 eck$LassoCheckResult]: Loop: 5#L13-2true assume !!(0 != main_~i~0 && 0 != main_~j~0);main_~t~0 := main_~i~0;main_~i~0 := main_~j~0;main_~j~0 := main_~t~0; 5#L13-2true [2021-10-28 23:27:57,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:27:57,355 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-28 23:27:57,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:27:57,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575037359] [2021-10-28 23:27:57,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:27:57,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:27:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:27:57,429 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:27:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:27:57,451 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:27:57,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:27:57,453 INFO L85 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2021-10-28 23:27:57,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:27:57,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672579528] [2021-10-28 23:27:57,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:27:57,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:27:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:27:57,460 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:27:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:27:57,466 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:27:57,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:27:57,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-28 23:27:57,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:27:57,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126999854] [2021-10-28 23:27:57,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:27:57,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:27:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:27:57,475 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:27:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:27:57,481 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:27:57,598 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:27:57,598 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:27:57,598 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:27:57,598 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:27:57,599 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:27:57,599 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:27:57,599 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:27:57,599 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:27:57,599 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip.c_Iteration1_Lasso [2021-10-28 23:27:57,599 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:27:57,600 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:27:57,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:27:57,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:27:57,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:27:57,653 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 23:27:57,659 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 23:27:57,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:27:57,941 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:27:57,946 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:27:57,948 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:27:57,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:27:57,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:27:57,959 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:27:57,959 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:27:57,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 23:27:57,988 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:27:57,988 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:27:58,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:27:58,027 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:27:58,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:27:58,028 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:27:58,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 23:27:58,032 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:27:58,033 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:27:58,049 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:27:58,049 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:27:58,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-10-28 23:27:58,084 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:27:58,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:27:58,086 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:27:58,093 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:27:58,093 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:27:58,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 23:27:58,107 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:27:58,108 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:27:58,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:27:58,131 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:27:58,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:27:58,139 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:27:58,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 23:27:58,140 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:27:58,141 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:27:58,162 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:27:58,162 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:27:58,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:27:58,185 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:27:58,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:27:58,187 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:27:58,188 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:27:58,188 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:27:58,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 23:27:58,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:27:58,248 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:27:58,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:27:58,249 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:27:58,260 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:27:58,261 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:27:58,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 23:27:58,464 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:27:58,464 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~t~0=0, ULTIMATE.start_main_~i~0=0} Honda state: {ULTIMATE.start_main_~j~0=-1, ULTIMATE.start_main_~t~0=0, ULTIMATE.start_main_~i~0=-1} Generalized eigenvectors: [{ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~t~0=0, ULTIMATE.start_main_~i~0=0}, {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~t~0=0, ULTIMATE.start_main_~i~0=0}, {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~t~0=-1, ULTIMATE.start_main_~i~0=0}] Lambdas: [15, 12, 0] Nus: [1, 0] [2021-10-28 23:27:58,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-10-28 23:27:58,484 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:27:58,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:27:58,486 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:27:58,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 23:27:58,491 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:27:58,491 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:27:58,507 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:27:58,507 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:27:58,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:27:58,545 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-10-28 23:27:58,546 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2021-10-28 23:27:58,546 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-10-28 23:27:58,546 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2021-10-28 23:27:58,547 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-10-28 23:27:58,547 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2021-10-28 23:27:58,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:27:58 BoogieIcfgContainer [2021-10-28 23:27:58,556 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:27:58,556 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:27:58,556 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:27:58,557 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:27:58,557 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:27:57" (3/4) ... [2021-10-28 23:27:58,559 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 23:27:58,584 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:27:58,584 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:27:58,586 INFO L168 Benchmark]: Toolchain (without parser) took 1851.40 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 66.9 MB in the beginning and 104.3 MB in the end (delta: -37.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:27:58,586 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 107.0 MB. Free memory is still 83.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:27:58,587 INFO L168 Benchmark]: CACSL2BoogieTranslator took 194.78 ms. Allocated memory is still 107.0 MB. Free memory was 66.7 MB in the beginning and 83.2 MB in the end (delta: -16.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:27:58,587 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.80 ms. Allocated memory is still 107.0 MB. Free memory was 83.2 MB in the beginning and 81.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:27:58,588 INFO L168 Benchmark]: Boogie Preprocessor took 26.63 ms. Allocated memory is still 107.0 MB. Free memory was 81.9 MB in the beginning and 80.9 MB in the end (delta: 991.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:27:58,588 INFO L168 Benchmark]: RCFGBuilder took 218.67 ms. Allocated memory is still 107.0 MB. Free memory was 80.9 MB in the beginning and 73.9 MB in the end (delta: 7.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:27:58,589 INFO L168 Benchmark]: BuchiAutomizer took 1309.76 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 73.6 MB in the beginning and 106.1 MB in the end (delta: -32.5 MB). Peak memory consumption was 40.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:27:58,590 INFO L168 Benchmark]: Witness Printer took 28.11 ms. Allocated memory is still 130.0 MB. Free memory was 106.1 MB in the beginning and 104.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:27:58,593 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 107.0 MB. Free memory is still 83.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 194.78 ms. Allocated memory is still 107.0 MB. Free memory was 66.7 MB in the beginning and 83.2 MB in the end (delta: -16.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.80 ms. Allocated memory is still 107.0 MB. Free memory was 83.2 MB in the beginning and 81.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.63 ms. Allocated memory is still 107.0 MB. Free memory was 81.9 MB in the beginning and 80.9 MB in the end (delta: 991.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 218.67 ms. Allocated memory is still 107.0 MB. Free memory was 80.9 MB in the beginning and 73.9 MB in the end (delta: 7.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1309.76 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 73.6 MB in the beginning and 106.1 MB in the end (delta: -32.5 MB). Peak memory consumption was 40.4 MB. Max. memory is 16.1 GB. * Witness Printer took 28.11 ms. Allocated memory is still 130.0 MB. Free memory was 106.1 MB in the beginning and 104.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax161 hnf100 lsp61 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq214 hnf93 smp100 dnf276 smp100 tf100 neg93 sie114 LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - GeometricNonTerminationArgumentResult [Line: 13]: Nontermination argument in form of an infinite program execution. [2021-10-28 23:27:58,601 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-10-28 23:27:58,602 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2021-10-28 23:27:58,602 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-10-28 23:27:58,602 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2021-10-28 23:27:58,603 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-10-28 23:27:58,603 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2021-10-28 23:27:58,604 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-10-28 23:27:58,604 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2021-10-28 23:27:58,604 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-10-28 23:27:58,605 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2021-10-28 23:27:58,605 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2021-10-28 23:27:58,605 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false Nontermination argument in form of an infinite execution State at position 0 is {t=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@99ddba0=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22fafb30=0, ~unnamed0~0~true=1, ~unnamed0~0~false=0, i=0, j=0} State at position 1 is {t=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@99ddba0=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22fafb30=0, ~unnamed0~0~true=1, ~unnamed0~0~false=0, i=-1, j=-1} For i>1, the state at position i is {t=0 + sum_{k=0}^i -1*0^k, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@99ddba0=0 + sum_{k=0}^i 0, \result=0 + sum_{k=0}^i 0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22fafb30=0 + sum_{k=0}^i 0, ~unnamed0~0~true=1 + sum_{k=0}^i 0, ~unnamed0~0~false=0 + sum_{k=0}^i 0, i=-1 + sum_{k=0}^i 0, j=-1 + sum_{k=0}^i 0} - StatisticsResult: NonterminationArgumentStatistics Unbounded Execution 1GEVs Lambdas: [15, 12, 0] Mus: [1, 0] - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] int t; [L9] i = __VERIFIER_nondet_int() [L10] j = __VERIFIER_nondet_int() [L11] t = 0 Loop: [L13] COND TRUE i != 0 && j != 0 [L14] t = i [L15] i = j [L16] j = t End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:27:58,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0adf1a7d-20ac-4519-8c4f-92931a66be98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...