./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Copenhagen.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Copenhagen.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9bcaeaea390de0d2b32b8c11c56b4b66e7b2005e ....................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:38:52,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:38:52,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:38:52,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:38:52,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:38:52,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:38:52,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:38:52,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:38:52,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:38:52,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:38:52,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:38:52,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:38:52,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:38:52,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:38:52,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:38:52,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:38:52,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:38:52,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:38:52,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:38:52,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:38:52,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:38:52,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:38:52,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:38:52,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:38:52,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:38:52,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:38:52,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:38:52,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:38:52,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:38:52,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:38:52,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:38:52,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:38:52,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:38:52,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:38:52,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:38:52,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:38:52,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:38:52,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:38:52,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:38:52,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:38:52,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:38:52,540 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-13 00:38:52,574 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:38:52,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:38:52,575 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:38:52,576 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:38:52,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:38:52,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:38:52,578 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:38:52,578 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-13 00:38:52,578 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-13 00:38:52,579 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-13 00:38:52,579 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-13 00:38:52,579 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-13 00:38:52,580 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-13 00:38:52,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:38:52,580 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:38:52,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:38:52,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:38:52,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-13 00:38:52,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-13 00:38:52,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-13 00:38:52,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:38:52,582 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-13 00:38:52,583 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:38:52,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-13 00:38:52,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:38:52,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:38:52,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:38:52,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:38:52,584 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:38:52,586 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-13 00:38:52,586 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_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bcaeaea390de0d2b32b8c11c56b4b66e7b2005e [2021-10-13 00:38:52,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:38:52,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:38:52,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:38:52,911 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:38:52,912 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:38:52,913 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/termination-crafted/Copenhagen.c [2021-10-13 00:38:52,997 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/data/21a81de2e/612ca2774ea941cba86c9016056a3f2b/FLAG33f61162e [2021-10-13 00:38:53,589 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:38:53,590 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/sv-benchmarks/c/termination-crafted/Copenhagen.c [2021-10-13 00:38:53,597 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/data/21a81de2e/612ca2774ea941cba86c9016056a3f2b/FLAG33f61162e [2021-10-13 00:38:53,976 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/data/21a81de2e/612ca2774ea941cba86c9016056a3f2b [2021-10-13 00:38:53,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:38:53,984 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:38:53,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:38:53,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:38:53,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:38:53,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:38:53" (1/1) ... [2021-10-13 00:38:53,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58874b08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:53, skipping insertion in model container [2021-10-13 00:38:54,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:38:53" (1/1) ... [2021-10-13 00:38:54,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:38:54,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:38:54,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:38:54,210 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:38:54,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:38:54,243 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:38:54,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:54 WrapperNode [2021-10-13 00:38:54,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:38:54,244 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:38:54,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:38:54,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:38:54,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:54" (1/1) ... [2021-10-13 00:38:54,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:54" (1/1) ... [2021-10-13 00:38:54,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:38:54,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:38:54,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:38:54,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:38:54,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:54" (1/1) ... [2021-10-13 00:38:54,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:54" (1/1) ... [2021-10-13 00:38:54,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:54" (1/1) ... [2021-10-13 00:38:54,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:54" (1/1) ... [2021-10-13 00:38:54,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:54" (1/1) ... [2021-10-13 00:38:54,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:54" (1/1) ... [2021-10-13 00:38:54,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:54" (1/1) ... [2021-10-13 00:38:54,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:38:54,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:38:54,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:38:54,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:38:54,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:54" (1/1) ... [2021-10-13 00:38:54,305 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:38:54,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:38:54,344 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:38:54,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-13 00:38:54,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:38:54,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:38:54,567 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:38:54,568 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-13 00:38:54,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:38:54 BoogieIcfgContainer [2021-10-13 00:38:54,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:38:54,572 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-13 00:38:54,572 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-13 00:38:54,576 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-13 00:38:54,577 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:38:54,577 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 12:38:53" (1/3) ... [2021-10-13 00:38:54,579 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@fef9d2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:38:54, skipping insertion in model container [2021-10-13 00:38:54,580 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:38:54,580 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:54" (2/3) ... [2021-10-13 00:38:54,580 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@fef9d2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:38:54, skipping insertion in model container [2021-10-13 00:38:54,581 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:38:54,581 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:38:54" (3/3) ... [2021-10-13 00:38:54,582 INFO L389 chiAutomizerObserver]: Analyzing ICFG Copenhagen.c [2021-10-13 00:38:54,642 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-13 00:38:54,643 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-13 00:38:54,643 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-13 00:38:54,643 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-13 00:38:54,643 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-13 00:38:54,644 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-13 00:38:54,644 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-13 00:38:54,644 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-13 00:38:54,660 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) [2021-10-13 00:38:54,681 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-13 00:38:54,681 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:38:54,681 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:38:54,688 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 00:38:54,688 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-13 00:38:54,688 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-13 00:38:54,689 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) [2021-10-13 00:38:54,690 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-13 00:38:54,690 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:38:54,690 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:38:54,691 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 00:38:54,691 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-13 00:38:54,699 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~oldx~0;havoc main_~x~0;havoc main_~y~0;havoc main_~oldx~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 7#L16-2true [2021-10-13 00:38:54,699 INFO L793 eck$LassoCheckResult]: Loop: 7#L16-2true assume !!(main_~x~0 >= 0 && main_~y~0 >= 0);main_~oldx~0 := main_~x~0;main_~x~0 := main_~y~0 - 1;main_~y~0 := main_~oldx~0 - 1; 7#L16-2true [2021-10-13 00:38:54,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:38:54,707 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-13 00:38:54,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:38:54,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886756717] [2021-10-13 00:38:54,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:38:54,720 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:38:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:38:54,813 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:38:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:38:54,836 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:38:54,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:38:54,840 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2021-10-13 00:38:54,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:38:54,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86946881] [2021-10-13 00:38:54,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:38:54,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:38:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:38:54,858 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:38:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:38:54,866 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:38:54,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:38:54,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-13 00:38:54,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:38:54,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12450117] [2021-10-13 00:38:54,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:38:54,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:38:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:38:54,881 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:38:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:38:54,891 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:38:54,997 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:38:54,998 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:38:54,999 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:38:54,999 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:38:54,999 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:38:54,999 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:38:55,000 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:38:55,000 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:38:55,000 INFO L133 ssoRankerPreferences]: Filename of dumped script: Copenhagen.c_Iteration1_Loop [2021-10-13 00:38:55,000 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:38:55,001 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:38:55,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:38:55,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:38:55,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:38:55,201 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:38:55,202 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:38:55,205 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:38:55,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:38:55,207 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:38:55,214 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:38:55,214 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:38:55,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-13 00:38:55,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:38:55,339 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:38:55,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:38:55,341 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:38:55,353 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:38:55,354 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:38:55,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-13 00:38:55,950 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:38:55,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:38:55,954 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:38:55,954 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:38:55,955 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:38:55,955 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:38:55,955 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:38:55,955 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:38:55,955 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:38:55,956 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:38:55,956 INFO L133 ssoRankerPreferences]: Filename of dumped script: Copenhagen.c_Iteration1_Loop [2021-10-13 00:38:55,956 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:38:55,956 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:38:55,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:38:56,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:38:56,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:38:56,125 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:38:56,131 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:38:56,133 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:38:56,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:38:56,136 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:38:56,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-13 00:38:56,149 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:38:56,168 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:38:56,168 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:38:56,169 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:38:56,169 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:38:56,169 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:38:56,179 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:38:56,181 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:38:56,199 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:38:56,216 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 00:38:56,219 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 00:38:56,221 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:38:56,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:38:56,223 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:38:56,226 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:38:56,226 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:38:56,227 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:38:56,228 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~x~0 + 1*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2021-10-13 00:38:56,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-13 00:38:56,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:38:56,278 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:38:56,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:38:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:38:56,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:38:56,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:38:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:38:56,350 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:38:56,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:38:56,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:38:56,372 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 [2021-10-13 00:38:56,374 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First 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) 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) [2021-10-13 00:38:56,428 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First 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). 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 15 states and 18 transitions. Complement of second has 5 states. [2021-10-13 00:38:56,429 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 [2021-10-13 00:38:56,431 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) [2021-10-13 00:38:56,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-13 00:38:56,434 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 1 letters. [2021-10-13 00:38:56,435 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:38:56,435 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 1 letters. [2021-10-13 00:38:56,436 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:38:56,436 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 2 letters. [2021-10-13 00:38:56,437 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:38:56,438 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2021-10-13 00:38:56,445 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 00:38:56,448 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 0 states and 0 transitions. [2021-10-13 00:38:56,449 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-13 00:38:56,450 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-13 00:38:56,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-13 00:38:56,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:38:56,451 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:38:56,451 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:38:56,451 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:38:56,451 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-13 00:38:56,452 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:38:56,452 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 00:38:56,452 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-13 00:38:56,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.10 12:38:56 BoogieIcfgContainer [2021-10-13 00:38:56,461 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-13 00:38:56,461 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:38:56,462 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:38:56,462 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:38:56,463 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:38:54" (3/4) ... [2021-10-13 00:38:56,466 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:38:56,466 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:38:56,472 INFO L168 Benchmark]: Toolchain (without parser) took 2483.41 ms. Allocated memory was 102.8 MB in the beginning and 130.0 MB in the end (delta: 27.3 MB). Free memory was 72.2 MB in the beginning and 94.7 MB in the end (delta: -22.5 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:38:56,474 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 102.8 MB. Free memory is still 54.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:38:56,475 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.05 ms. Allocated memory is still 102.8 MB. Free memory was 72.2 MB in the beginning and 79.6 MB in the end (delta: -7.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:38:56,477 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.83 ms. Allocated memory is still 102.8 MB. Free memory was 79.6 MB in the beginning and 78.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:38:56,478 INFO L168 Benchmark]: Boogie Preprocessor took 19.38 ms. Allocated memory is still 102.8 MB. Free memory was 78.4 MB in the beginning and 77.5 MB in the end (delta: 887.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:38:56,480 INFO L168 Benchmark]: RCFGBuilder took 273.77 ms. Allocated memory is still 102.8 MB. Free memory was 77.5 MB in the beginning and 70.1 MB in the end (delta: 7.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:38:56,482 INFO L168 Benchmark]: BuchiAutomizer took 1889.04 ms. Allocated memory was 102.8 MB in the beginning and 130.0 MB in the end (delta: 27.3 MB). Free memory was 70.1 MB in the beginning and 94.7 MB in the end (delta: -24.6 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:38:56,490 INFO L168 Benchmark]: Witness Printer took 5.14 ms. Allocated memory is still 130.0 MB. Free memory is still 94.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:38:56,497 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 102.8 MB. Free memory is still 54.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 255.05 ms. Allocated memory is still 102.8 MB. Free memory was 72.2 MB in the beginning and 79.6 MB in the end (delta: -7.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.83 ms. Allocated memory is still 102.8 MB. Free memory was 79.6 MB in the beginning and 78.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.38 ms. Allocated memory is still 102.8 MB. Free memory was 78.4 MB in the beginning and 77.5 MB in the end (delta: 887.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 273.77 ms. Allocated memory is still 102.8 MB. Free memory was 77.5 MB in the beginning and 70.1 MB in the end (delta: 7.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1889.04 ms. Allocated memory was 102.8 MB in the beginning and 130.0 MB in the end (delta: 27.3 MB). Free memory was 70.1 MB in the beginning and 94.7 MB in the end (delta: -24.6 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * Witness Printer took 5.14 ms. Allocated memory is still 130.0 MB. Free memory is still 94.7 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 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function y + x + 1 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.8s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. 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 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 4 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.2ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax157 hnf100 lsp63 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq176 hnf91 smp100 dnf100 smp100 tf105 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 95ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-13 00:38:56,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:38:56,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b4ec373-da23-41dd-8612-5adbd906055e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...