./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Copenhagen.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 97f3ae71d7e55617c3dc3c40b5dfbc58b84ebe43530264553a18780748bc766c ....................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:26:24,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:26:24,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:26:24,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:26:24,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:26:24,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:26:24,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:26:24,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:26:24,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:26:24,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:26:24,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:26:24,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:26:24,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:26:24,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:26:24,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:26:24,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:26:24,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:26:24,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:26:24,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:26:24,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:26:24,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:26:24,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:26:24,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:26:24,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:26:24,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:26:24,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:26:24,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:26:24,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:26:24,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:26:24,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:26:24,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:26:24,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:26:24,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:26:24,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:26:24,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:26:24,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:26:24,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:26:24,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:26:24,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:26:24,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:26:24,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:26:24,421 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 09:26:24,447 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:26:24,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:26:24,448 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:26:24,448 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:26:24,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:26:24,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:26:24,450 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:26:24,451 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:26:24,451 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:26:24,451 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:26:24,452 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:26:24,452 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:26:24,452 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:26:24,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:26:24,453 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:26:24,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:26:24,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:26:24,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:26:24,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:26:24,455 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:26:24,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:26:24,455 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:26:24,455 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:26:24,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:26:24,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:26:24,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:26:24,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:26:24,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:26:24,458 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:26:24,459 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:26:24,459 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_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97f3ae71d7e55617c3dc3c40b5dfbc58b84ebe43530264553a18780748bc766c [2021-10-28 09:26:24,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:26:24,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:26:24,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:26:24,841 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:26:24,842 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:26:24,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/termination-crafted/Copenhagen.c [2021-10-28 09:26:24,925 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/data/a38d2aeab/7d40df7a0fcc47e385fbf167a6792945/FLAG38160c4fa [2021-10-28 09:26:25,427 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:26:25,428 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/sv-benchmarks/c/termination-crafted/Copenhagen.c [2021-10-28 09:26:25,442 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/data/a38d2aeab/7d40df7a0fcc47e385fbf167a6792945/FLAG38160c4fa [2021-10-28 09:26:25,825 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/data/a38d2aeab/7d40df7a0fcc47e385fbf167a6792945 [2021-10-28 09:26:25,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:26:25,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:26:25,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:26:25,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:26:25,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:26:25,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:26:25" (1/1) ... [2021-10-28 09:26:25,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d2d0999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:25, skipping insertion in model container [2021-10-28 09:26:25,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:26:25" (1/1) ... [2021-10-28 09:26:25,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:26:25,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:26:26,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:26:26,030 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:26:26,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:26:26,058 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:26:26,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:26 WrapperNode [2021-10-28 09:26:26,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:26:26,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:26:26,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:26:26,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:26:26,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:26" (1/1) ... [2021-10-28 09:26:26,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:26" (1/1) ... [2021-10-28 09:26:26,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:26:26,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:26:26,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:26:26,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:26:26,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:26" (1/1) ... [2021-10-28 09:26:26,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:26" (1/1) ... [2021-10-28 09:26:26,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:26" (1/1) ... [2021-10-28 09:26:26,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:26" (1/1) ... [2021-10-28 09:26:26,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:26" (1/1) ... [2021-10-28 09:26:26,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:26" (1/1) ... [2021-10-28 09:26:26,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:26" (1/1) ... [2021-10-28 09:26:26,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:26:26,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:26:26,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:26:26,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:26:26,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:26" (1/1) ... [2021-10-28 09:26:26,147 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:26:26,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:26:26,179 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:26:26,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:26:26,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:26:26,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:26:26,392 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:26:26,393 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 09:26:26,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:26:26 BoogieIcfgContainer [2021-10-28 09:26:26,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:26:26,397 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:26:26,397 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:26:26,400 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:26:26,400 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:26:26,401 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:26:25" (1/3) ... [2021-10-28 09:26:26,402 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34a868bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:26:26, skipping insertion in model container [2021-10-28 09:26:26,402 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:26:26,403 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:26" (2/3) ... [2021-10-28 09:26:26,403 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34a868bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:26:26, skipping insertion in model container [2021-10-28 09:26:26,403 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:26:26,403 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:26:26" (3/3) ... [2021-10-28 09:26:26,405 INFO L389 chiAutomizerObserver]: Analyzing ICFG Copenhagen.c [2021-10-28 09:26:26,459 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:26:26,459 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:26:26,459 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:26:26,459 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:26:26,459 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:26:26,459 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:26:26,460 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:26:26,460 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:26:26,476 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 09:26:26,498 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-28 09:26:26,498 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:26:26,498 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:26:26,505 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 09:26:26,505 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-28 09:26:26,505 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:26:26,506 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 09:26:26,507 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-28 09:26:26,507 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:26:26,507 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:26:26,508 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 09:26:26,508 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-28 09:26:26,516 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 [2021-10-28 09:26:26,516 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 [2021-10-28 09:26:26,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:26,524 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-28 09:26:26,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:26:26,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848537380] [2021-10-28 09:26:26,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:26,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:26:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:26:26,626 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:26:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:26:26,655 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:26:26,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:26,661 INFO L85 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2021-10-28 09:26:26,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:26:26,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629915276] [2021-10-28 09:26:26,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:26,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:26:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:26:26,691 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:26:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:26:26,709 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:26:26,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:26,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-28 09:26:26,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:26:26,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954395387] [2021-10-28 09:26:26,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:26,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:26:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:26:26,739 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:26:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:26:26,758 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:26:26,884 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:26:26,885 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:26:26,885 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:26:26,886 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:26:26,886 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:26:26,886 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:26:26,886 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:26:26,887 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:26:26,887 INFO L133 ssoRankerPreferences]: Filename of dumped script: Copenhagen.c_Iteration1_Loop [2021-10-28 09:26:26,887 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:26:26,887 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:26:26,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:26:26,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:26:26,947 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:26:27,086 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:26:27,087 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:26:27,088 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:26:27,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:26:27,090 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:26:27,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 09:26:27,093 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:26:27,094 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:26:27,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:26:27,150 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:26:27,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:26:27,152 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:26:27,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 09:26:27,154 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:26:27,154 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:26:27,654 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:26:27,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-10-28 09:26:27,660 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:26:27,661 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:26:27,661 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:26:27,661 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:26:27,661 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:26:27,661 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:26:27,661 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:26:27,662 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:26:27,662 INFO L133 ssoRankerPreferences]: Filename of dumped script: Copenhagen.c_Iteration1_Loop [2021-10-28 09:26:27,662 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:26:27,662 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:26:27,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:26:27,698 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:26:27,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:26:27,801 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:26:27,806 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:26:27,809 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:26:27,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:26:27,813 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:26:27,818 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:26:27,830 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:26:27,830 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:26:27,830 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:26:27,830 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:26:27,831 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:26:27,837 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:26:27,838 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:26:27,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 09:26:27,857 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:26:27,871 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:26:27,872 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:26:27,873 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:26:27,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:26:27,876 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:26:27,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 09:26:27,909 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:26:27,909 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:26:27,910 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:26:27,911 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 [] [2021-10-28 09:26:27,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:26:27,937 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:26:27,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:26:27,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:26:27,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:26:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:26:28,013 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:26:28,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:26:28,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:26:28,031 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-28 09:26:28,032 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) [2021-10-28 09:26:28,066 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. [2021-10-28 09:26:28,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 09:26:28,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.0) internal successors, (2), 1 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:26:28,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-28 09:26:28,071 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 1 letters. [2021-10-28 09:26:28,072 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:26:28,072 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 1 letters. [2021-10-28 09:26:28,072 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:26:28,072 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 2 letters. [2021-10-28 09:26:28,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:26:28,074 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2021-10-28 09:26:28,076 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 09:26:28,080 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 0 states and 0 transitions. [2021-10-28 09:26:28,081 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 09:26:28,081 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 09:26:28,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 09:26:28,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:26:28,082 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:26:28,083 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:26:28,083 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:26:28,083 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:26:28,083 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:26:28,084 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 09:26:28,084 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 09:26:28,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:26:28 BoogieIcfgContainer [2021-10-28 09:26:28,091 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:26:28,091 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:26:28,091 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:26:28,092 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:26:28,092 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:26:26" (3/4) ... [2021-10-28 09:26:28,096 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:26:28,096 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:26:28,099 INFO L168 Benchmark]: Toolchain (without parser) took 2266.04 ms. Allocated memory was 83.9 MB in the beginning and 123.7 MB in the end (delta: 39.8 MB). Free memory was 48.3 MB in the beginning and 54.6 MB in the end (delta: -6.3 MB). Peak memory consumption was 31.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:26:28,100 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory was 64.6 MB in the beginning and 64.5 MB in the end (delta: 35.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:26:28,101 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.18 ms. Allocated memory was 83.9 MB in the beginning and 123.7 MB in the end (delta: 39.8 MB). Free memory was 48.1 MB in the beginning and 101.5 MB in the end (delta: -53.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:26:28,102 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.64 ms. Allocated memory is still 123.7 MB. Free memory was 101.5 MB in the beginning and 100.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:26:28,103 INFO L168 Benchmark]: Boogie Preprocessor took 28.91 ms. Allocated memory is still 123.7 MB. Free memory was 100.3 MB in the beginning and 99.5 MB in the end (delta: 775.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:26:28,104 INFO L168 Benchmark]: RCFGBuilder took 259.45 ms. Allocated memory is still 123.7 MB. Free memory was 99.5 MB in the beginning and 91.9 MB in the end (delta: 7.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:26:28,105 INFO L168 Benchmark]: BuchiAutomizer took 1694.19 ms. Allocated memory is still 123.7 MB. Free memory was 91.5 MB in the beginning and 54.6 MB in the end (delta: 36.9 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:26:28,105 INFO L168 Benchmark]: Witness Printer took 5.06 ms. Allocated memory is still 123.7 MB. Free memory is still 54.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:26:28,110 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory was 64.6 MB in the beginning and 64.5 MB in the end (delta: 35.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 223.18 ms. Allocated memory was 83.9 MB in the beginning and 123.7 MB in the end (delta: 39.8 MB). Free memory was 48.1 MB in the beginning and 101.5 MB in the end (delta: -53.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.64 ms. Allocated memory is still 123.7 MB. Free memory was 101.5 MB in the beginning and 100.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.91 ms. Allocated memory is still 123.7 MB. Free memory was 100.3 MB in the beginning and 99.5 MB in the end (delta: 775.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 259.45 ms. Allocated memory is still 123.7 MB. Free memory was 99.5 MB in the beginning and 91.9 MB in the end (delta: 7.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1694.19 ms. Allocated memory is still 123.7 MB. Free memory was 91.5 MB in the beginning and 54.6 MB in the end (delta: 36.9 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.06 ms. Allocated memory is still 123.7 MB. Free memory is still 54.6 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 1.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.4s. 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, 0.0s 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: 102ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 09:26:28,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-10-28 09:26:28,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b806c3-1ed5-4d28-a953-503c3043c92c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...