./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/RecursiveNonterminating-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2cc560-88ae-474d-be72-9d8a9fd8cfcc/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2cc560-88ae-474d-be72-9d8a9fd8cfcc/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2cc560-88ae-474d-be72-9d8a9fd8cfcc/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2cc560-88ae-474d-be72-9d8a9fd8cfcc/bin/uautomizer-Z5i5R5N3CC/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/RecursiveNonterminating-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2cc560-88ae-474d-be72-9d8a9fd8cfcc/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2cc560-88ae-474d-be72-9d8a9fd8cfcc/bin/uautomizer-Z5i5R5N3CC --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 f21f1881350863de740f7b7321104b53617dd8ce ........................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:23:07,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:23:07,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:23:07,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:23:07,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:23:07,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:23:07,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:23:07,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:23:07,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:23:07,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:23:07,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:23:07,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:23:07,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:23:07,644 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:23:07,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:23:07,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:23:07,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:23:07,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:23:07,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:23:07,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:23:07,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:23:07,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:23:07,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:23:07,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:23:07,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:23:07,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:23:07,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:23:07,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:23:07,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:23:07,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:23:07,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:23:07,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:23:07,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:23:07,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:23:07,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:23:07,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:23:07,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:23:07,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:23:07,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:23:07,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:23:07,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:23:07,693 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2cc560-88ae-474d-be72-9d8a9fd8cfcc/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-11 00:23:07,738 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:23:07,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:23:07,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:23:07,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:23:07,740 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:23:07,741 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-11 00:23:07,747 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-11 00:23:07,748 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-11 00:23:07,748 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-11 00:23:07,748 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-11 00:23:07,749 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-11 00:23:07,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:23:07,750 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:23:07,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:23:07,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:23:07,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-11 00:23:07,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-11 00:23:07,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-11 00:23:07,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:23:07,751 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-11 00:23:07,751 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:23:07,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-11 00:23:07,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:23:07,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:23:07,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:23:07,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:23:07,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:23:07,755 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-11 00:23:07,755 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_6b2cc560-88ae-474d-be72-9d8a9fd8cfcc/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2cc560-88ae-474d-be72-9d8a9fd8cfcc/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f21f1881350863de740f7b7321104b53617dd8ce [2021-10-11 00:23:08,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:23:08,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:23:08,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:23:08,088 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:23:08,089 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:23:08,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2cc560-88ae-474d-be72-9d8a9fd8cfcc/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/termination-crafted/RecursiveNonterminating-1.c [2021-10-11 00:23:08,163 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2cc560-88ae-474d-be72-9d8a9fd8cfcc/bin/uautomizer-Z5i5R5N3CC/data/5ea226bfe/75bd2656125442afa1ccd7e907d3cb71/FLAG57c6e450a [2021-10-11 00:23:08,730 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:23:08,730 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2cc560-88ae-474d-be72-9d8a9fd8cfcc/sv-benchmarks/c/termination-crafted/RecursiveNonterminating-1.c [2021-10-11 00:23:08,741 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2cc560-88ae-474d-be72-9d8a9fd8cfcc/bin/uautomizer-Z5i5R5N3CC/data/5ea226bfe/75bd2656125442afa1ccd7e907d3cb71/FLAG57c6e450a [2021-10-11 00:23:09,097 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2cc560-88ae-474d-be72-9d8a9fd8cfcc/bin/uautomizer-Z5i5R5N3CC/data/5ea226bfe/75bd2656125442afa1ccd7e907d3cb71 [2021-10-11 00:23:09,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:23:09,101 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:23:09,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:23:09,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:23:09,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:23:09,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:23:09" (1/1) ... [2021-10-11 00:23:09,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@461054e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:09, skipping insertion in model container [2021-10-11 00:23:09,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:23:09" (1/1) ... [2021-10-11 00:23:09,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:23:09,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:23:09,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:23:09,275 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:23:09,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:23:09,317 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:23:09,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:09 WrapperNode [2021-10-11 00:23:09,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:23:09,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:23:09,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:23:09,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:23:09,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:09" (1/1) ... [2021-10-11 00:23:09,343 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:09" (1/1) ... [2021-10-11 00:23:09,358 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:23:09,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:23:09,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:23:09,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:23:09,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:09" (1/1) ... [2021-10-11 00:23:09,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:09" (1/1) ... [2021-10-11 00:23:09,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:09" (1/1) ... [2021-10-11 00:23:09,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:09" (1/1) ... [2021-10-11 00:23:09,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:09" (1/1) ... [2021-10-11 00:23:09,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:09" (1/1) ... [2021-10-11 00:23:09,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:09" (1/1) ... [2021-10-11 00:23:09,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:23:09,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:23:09,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:23:09,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:23:09,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:09" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2cc560-88ae-474d-be72-9d8a9fd8cfcc/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:23:09,473 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2021-10-11 00:23:09,473 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2021-10-11 00:23:09,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:23:09,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:23:09,635 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:23:09,635 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-11 00:23:09,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:09 BoogieIcfgContainer [2021-10-11 00:23:09,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:23:09,638 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-11 00:23:09,638 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-11 00:23:09,645 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-11 00:23:09,645 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:23:09,647 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 11.10 12:23:09" (1/3) ... [2021-10-11 00:23:09,649 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7d7f1690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 11.10 12:23:09, skipping insertion in model container [2021-10-11 00:23:09,649 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:23:09,649 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:09" (2/3) ... [2021-10-11 00:23:09,650 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7d7f1690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 11.10 12:23:09, skipping insertion in model container [2021-10-11 00:23:09,650 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:23:09,650 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:09" (3/3) ... [2021-10-11 00:23:09,652 INFO L389 chiAutomizerObserver]: Analyzing ICFG RecursiveNonterminating-1.c [2021-10-11 00:23:09,692 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-11 00:23:09,693 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-11 00:23:09,693 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-11 00:23:09,693 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:23:09,693 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:23:09,693 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-11 00:23:09,693 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:23:09,694 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-11 00:23:09,705 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2021-10-11 00:23:09,729 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-11 00:23:09,730 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:23:09,730 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:23:09,736 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-11 00:23:09,736 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-11 00:23:09,736 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-11 00:23:09,736 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2021-10-11 00:23:09,737 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-11 00:23:09,737 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:23:09,737 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:23:09,738 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-11 00:23:09,738 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-11 00:23:09,743 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; 8#L18true assume !!(main_~n~0 <= 2147483646); 11#L19true call rec(main_~n~0, 1 + main_~n~0);< 3#recENTRYtrue [2021-10-11 00:23:09,743 INFO L796 eck$LassoCheckResult]: Loop: 3#recENTRYtrue ~x := #in~x;~y := #in~y; 10#L11true assume ~x <= 23 && ~x >= -42; 5#L12true call rec(2 * ~y - 2, 1 + ~x);< 3#recENTRYtrue [2021-10-11 00:23:09,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:09,758 INFO L82 PathProgramCache]: Analyzing trace with hash 39889, now seen corresponding path program 1 times [2021-10-11 00:23:09,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:09,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949951284] [2021-10-11 00:23:09,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:09,861 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:09,882 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:09,900 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:23:09,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:09,907 INFO L82 PathProgramCache]: Analyzing trace with hash 29905, now seen corresponding path program 1 times [2021-10-11 00:23:09,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:09,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158371744] [2021-10-11 00:23:09,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:09,928 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:09,941 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:09,945 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:23:09,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:09,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1188333313, now seen corresponding path program 1 times [2021-10-11 00:23:09,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:09,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122228158] [2021-10-11 00:23:09,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:09,962 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:09,970 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:09,973 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:23:10,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 11.10 12:23:10 BoogieIcfgContainer [2021-10-11 00:23:10,355 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-11 00:23:10,359 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:23:10,359 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:23:10,359 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:23:10,360 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:09" (3/4) ... [2021-10-11 00:23:10,363 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-11 00:23:10,406 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2cc560-88ae-474d-be72-9d8a9fd8cfcc/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:23:10,406 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:23:10,409 INFO L168 Benchmark]: Toolchain (without parser) took 1305.69 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 85.8 MB in the beginning and 113.9 MB in the end (delta: -28.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:23:10,414 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 75.5 MB. Free memory was 33.9 MB in the beginning and 33.8 MB in the end (delta: 78.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:23:10,415 INFO L168 Benchmark]: CACSL2BoogieTranslator took 215.78 ms. Allocated memory is still 117.4 MB. Free memory was 85.5 MB in the beginning and 93.6 MB in the end (delta: -8.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:10,416 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.73 ms. Allocated memory is still 117.4 MB. Free memory was 93.4 MB in the beginning and 92.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:23:10,416 INFO L168 Benchmark]: Boogie Preprocessor took 15.14 ms. Allocated memory is still 117.4 MB. Free memory was 92.1 MB in the beginning and 91.3 MB in the end (delta: 824.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:23:10,417 INFO L168 Benchmark]: RCFGBuilder took 261.80 ms. Allocated memory is still 117.4 MB. Free memory was 91.3 MB in the beginning and 82.5 MB in the end (delta: 8.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:10,418 INFO L168 Benchmark]: BuchiAutomizer took 717.84 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 82.5 MB in the beginning and 115.4 MB in the end (delta: -33.0 MB). Peak memory consumption was 28.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:10,421 INFO L168 Benchmark]: Witness Printer took 47.46 ms. Allocated memory is still 142.6 MB. Free memory was 115.4 MB in the beginning and 113.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:10,427 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 75.5 MB. Free memory was 33.9 MB in the beginning and 33.8 MB in the end (delta: 78.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 215.78 ms. Allocated memory is still 117.4 MB. Free memory was 85.5 MB in the beginning and 93.6 MB in the end (delta: -8.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.73 ms. Allocated memory is still 117.4 MB. Free memory was 93.4 MB in the beginning and 92.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.14 ms. Allocated memory is still 117.4 MB. Free memory was 92.1 MB in the beginning and 91.3 MB in the end (delta: 824.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 261.80 ms. Allocated memory is still 117.4 MB. Free memory was 91.3 MB in the beginning and 82.5 MB in the end (delta: 8.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 717.84 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 82.5 MB in the beginning and 115.4 MB in the end (delta: -33.0 MB). Peak memory consumption was 28.2 MB. Max. memory is 16.1 GB. * Witness Printer took 47.46 ms. Allocated memory is still 142.6 MB. Free memory was 115.4 MB in the beginning and 113.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.6s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 10]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {x=0, y=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@347be31f=0, \result=0, \old(x)=0, NULL=0, n=0, \old(y)=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L17] int n = __VERIFIER_nondet_int(); [L18] COND FALSE !(!(n<=2147483646)) [L19] CALL rec(n, n + 1) Loop: [L11] COND TRUE x <= 23 && x >= -42 [L12] CALL rec(2*y-2, x + 1) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...