./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/4NestedWith3Variables-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/4NestedWith3Variables-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF --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 b39ec4b52f8da315ff57d8e97152c727a55203720ed4bc216d0daa6b94e35d48 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:51:51,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:51:51,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:51:51,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:51:51,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:51:51,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:51:51,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:51:51,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:51:51,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:51:51,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:51:51,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:51:51,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:51:51,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:51:51,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:51:51,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:51:51,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:51:51,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:51:51,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:51:51,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:51:51,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:51:51,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:51:51,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:51:51,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:51:51,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:51:51,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:51:51,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:51:51,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:51:51,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:51:51,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:51:51,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:51:51,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:51:51,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:51:51,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:51:51,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:51:51,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:51:51,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:51:51,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:51:51,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:51:51,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:51:51,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:51:51,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:51:51,266 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-20 06:51:51,291 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:51:51,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:51:51,291 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:51:51,292 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:51:51,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:51:51,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:51:51,293 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:51:51,293 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-20 06:51:51,294 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-20 06:51:51,294 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-20 06:51:51,294 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-20 06:51:51,294 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-20 06:51:51,294 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-20 06:51:51,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:51:51,295 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:51:51,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:51:51,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:51:51,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-20 06:51:51,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-20 06:51:51,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-20 06:51:51,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:51:51,296 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-20 06:51:51,296 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:51:51,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-20 06:51:51,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:51:51,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:51:51,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:51:51,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:51:51,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:51:51,299 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-20 06:51:51,299 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_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b39ec4b52f8da315ff57d8e97152c727a55203720ed4bc216d0daa6b94e35d48 [2021-11-20 06:51:51,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:51:51,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:51:51,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:51:51,631 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:51:51,632 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:51:51,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/termination-crafted/4NestedWith3Variables-1.c [2021-11-20 06:51:51,717 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/data/228d782e3/ad2628d011d643eba2c3a33b111363a5/FLAG2fd22271c [2021-11-20 06:51:52,219 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:51:52,220 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/sv-benchmarks/c/termination-crafted/4NestedWith3Variables-1.c [2021-11-20 06:51:52,226 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/data/228d782e3/ad2628d011d643eba2c3a33b111363a5/FLAG2fd22271c [2021-11-20 06:51:52,599 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/data/228d782e3/ad2628d011d643eba2c3a33b111363a5 [2021-11-20 06:51:52,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:51:52,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:51:52,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:51:52,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:51:52,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:51:52,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:51:52" (1/1) ... [2021-11-20 06:51:52,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dc1d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:51:52, skipping insertion in model container [2021-11-20 06:51:52,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:51:52" (1/1) ... [2021-11-20 06:51:52,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:51:52,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:51:52,806 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:51:52,819 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:51:52,852 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:51:52,865 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:51:52,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:51:52 WrapperNode [2021-11-20 06:51:52,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:51:52,867 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:51:52,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:51:52,868 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:51:52,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:51:52" (1/1) ... [2021-11-20 06:51:52,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:51:52" (1/1) ... [2021-11-20 06:51:52,901 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31 [2021-11-20 06:51:52,901 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:51:52,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:51:52,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:51:52,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:51:52,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:51:52" (1/1) ... [2021-11-20 06:51:52,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:51:52" (1/1) ... [2021-11-20 06:51:52,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:51:52" (1/1) ... [2021-11-20 06:51:52,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:51:52" (1/1) ... [2021-11-20 06:51:52,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:51:52" (1/1) ... [2021-11-20 06:51:52,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:51:52" (1/1) ... [2021-11-20 06:51:52,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:51:52" (1/1) ... [2021-11-20 06:51:52,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:51:52,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:51:52,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:51:52,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:51:52,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:51:52" (1/1) ... [2021-11-20 06:51:52,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:51:52,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:51:52,962 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:51:52,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-20 06:51:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:51:53,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:51:53,076 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:51:53,079 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:51:53,201 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:51:53,209 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:51:53,209 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 06:51:53,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:51:53 BoogieIcfgContainer [2021-11-20 06:51:53,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:51:53,215 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-20 06:51:53,215 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-20 06:51:53,218 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-20 06:51:53,219 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:51:53,219 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 06:51:52" (1/3) ... [2021-11-20 06:51:53,222 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@26119d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 06:51:53, skipping insertion in model container [2021-11-20 06:51:53,222 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:51:53,222 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:51:52" (2/3) ... [2021-11-20 06:51:53,223 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@26119d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 06:51:53, skipping insertion in model container [2021-11-20 06:51:53,223 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:51:53,224 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:51:53" (3/3) ... [2021-11-20 06:51:53,226 INFO L388 chiAutomizerObserver]: Analyzing ICFG 4NestedWith3Variables-1.c [2021-11-20 06:51:53,307 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-20 06:51:53,307 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-20 06:51:53,307 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-20 06:51:53,307 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-20 06:51:53,307 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-20 06:51:53,308 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-20 06:51:53,308 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-20 06:51:53,308 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-20 06:51:53,328 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2021-11-20 06:51:53,348 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-20 06:51:53,348 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:51:53,349 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:51:53,354 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-20 06:51:53,354 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-20 06:51:53,354 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-20 06:51:53,355 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2021-11-20 06:51:53,356 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-20 06:51:53,356 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:51:53,356 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:51:53,357 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-20 06:51:53,357 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-20 06:51:53,362 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~a~0#1, main_~b~0#1, main_~q~0#1, main_~olda~0#1;havoc main_~a~0#1;havoc main_~b~0#1;havoc main_~q~0#1;havoc main_~olda~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~a~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~b~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 7#L23true assume !!(-524287 <= main_~q~0#1 && main_~q~0#1 <= 524287); 10#L24true assume !!(-524287 <= main_~a~0#1 && main_~a~0#1 <= 524287); 6#L25true assume !!(-524287 <= main_~b~0#1 && main_~b~0#1 <= 524287); 5#L26-2true [2021-11-20 06:51:53,363 INFO L793 eck$LassoCheckResult]: Loop: 5#L26-2true assume !!(main_~q~0#1 > 0);main_~q~0#1 := main_~q~0#1 + main_~a~0#1 - 1;main_~olda~0#1 := main_~a~0#1;main_~a~0#1 := 3 * main_~olda~0#1 - 4 * main_~b~0#1;main_~b~0#1 := 4 * main_~olda~0#1 + 3 * main_~b~0#1; 5#L26-2true [2021-11-20 06:51:53,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:51:53,367 INFO L85 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 1 times [2021-11-20 06:51:53,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:51:53,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848901093] [2021-11-20 06:51:53,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:51:53,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:51:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:51:53,455 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:51:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:51:53,487 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:51:53,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:51:53,503 INFO L85 PathProgramCache]: Analyzing trace with hash 57, now seen corresponding path program 1 times [2021-11-20 06:51:53,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:51:53,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742253821] [2021-11-20 06:51:53,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:51:53,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:51:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:51:53,522 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:51:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:51:53,542 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:51:53,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:51:53,544 INFO L85 PathProgramCache]: Analyzing trace with hash 889571345, now seen corresponding path program 1 times [2021-11-20 06:51:53,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:51:53,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548617639] [2021-11-20 06:51:53,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:51:53,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:51:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:51:53,573 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:51:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:51:53,588 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:51:53,678 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:51:53,678 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:51:53,678 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:51:53,679 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:51:53,679 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 06:51:53,679 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:51:53,679 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:51:53,679 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:51:53,679 INFO L133 ssoRankerPreferences]: Filename of dumped script: 4NestedWith3Variables-1.c_Iteration1_Loop [2021-11-20 06:51:53,680 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:51:53,680 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:51:53,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:51:53,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:51:53,711 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:51:53,807 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:51:53,807 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 06:51:53,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:51:53,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:51:53,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:51:53,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-20 06:51:53,860 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:51:53,860 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:51:53,889 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:51:53,889 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:51:53,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:51:53,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:51:53,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:51:53,930 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:51:53,934 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:51:53,934 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:51:53,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-20 06:51:53,955 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:51:53,955 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:51:53,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:51:53,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:51:53,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:51:53,995 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:51:54,002 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:51:54,002 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:51:54,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-20 06:51:54,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:51:54,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:51:54,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:51:54,091 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:51:54,098 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:51:54,098 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:51:54,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c43cbd98-94f4-4d98-b505-a95f4938384e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process