./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Division-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c18347-ef1a-4d69-b852-88f09fdf15c7/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c18347-ef1a-4d69-b852-88f09fdf15c7/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c18347-ef1a-4d69-b852-88f09fdf15c7/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c18347-ef1a-4d69-b852-88f09fdf15c7/bin/uautomizer-WNIpwEf4Nt/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Division-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c18347-ef1a-4d69-b852-88f09fdf15c7/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c18347-ef1a-4d69-b852-88f09fdf15c7/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d089d3bcb050ed43a9f47a1e8909790d01358f90 ........................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:14:34,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:14:34,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:14:35,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:14:35,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:14:35,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:14:35,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:14:35,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:14:35,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:14:35,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:14:35,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:14:35,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:14:35,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:14:35,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:14:35,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:14:35,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:14:35,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:14:35,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:14:35,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:14:35,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:14:35,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:14:35,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:14:35,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:14:35,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:14:35,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:14:35,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:14:35,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:14:35,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:14:35,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:14:35,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:14:35,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:14:35,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:14:35,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:14:35,114 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:14:35,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:14:35,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:14:35,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:14:35,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:14:35,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:14:35,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:14:35,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:14:35,122 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c18347-ef1a-4d69-b852-88f09fdf15c7/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-13 01:14:35,156 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:14:35,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:14:35,157 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:14:35,157 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:14:35,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:14:35,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:14:35,159 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:14:35,160 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-13 01:14:35,160 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-13 01:14:35,160 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-13 01:14:35,161 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-13 01:14:35,161 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-13 01:14:35,161 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-13 01:14:35,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:14:35,162 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 01:14:35,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:14:35,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:14:35,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-13 01:14:35,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-13 01:14:35,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-13 01:14:35,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:14:35,164 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-13 01:14:35,164 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:14:35,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-13 01:14:35,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:14:35,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:14:35,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:14:35,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:14:35,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:14:35,168 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-13 01:14:35,168 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_a7c18347-ef1a-4d69-b852-88f09fdf15c7/bin/uautomizer-WNIpwEf4Nt/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c18347-ef1a-4d69-b852-88f09fdf15c7/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d089d3bcb050ed43a9f47a1e8909790d01358f90 [2021-10-13 01:14:35,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:14:35,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:14:35,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:14:35,579 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:14:35,580 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:14:35,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c18347-ef1a-4d69-b852-88f09fdf15c7/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/termination-crafted/Division-2.c [2021-10-13 01:14:35,663 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c18347-ef1a-4d69-b852-88f09fdf15c7/bin/uautomizer-WNIpwEf4Nt/data/3d094efea/f82c4070fcac4312802e973f1ce5e7d3/FLAGfbdbc5e95 [2021-10-13 01:14:36,295 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:14:36,296 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c18347-ef1a-4d69-b852-88f09fdf15c7/sv-benchmarks/c/termination-crafted/Division-2.c [2021-10-13 01:14:36,313 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c18347-ef1a-4d69-b852-88f09fdf15c7/bin/uautomizer-WNIpwEf4Nt/data/3d094efea/f82c4070fcac4312802e973f1ce5e7d3/FLAGfbdbc5e95 [2021-10-13 01:14:36,668 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c18347-ef1a-4d69-b852-88f09fdf15c7/bin/uautomizer-WNIpwEf4Nt/data/3d094efea/f82c4070fcac4312802e973f1ce5e7d3 [2021-10-13 01:14:36,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:14:36,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:14:36,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:14:36,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:14:36,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:14:36,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:14:36" (1/1) ... [2021-10-13 01:14:36,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bfd7e56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:36, skipping insertion in model container [2021-10-13 01:14:36,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:14:36" (1/1) ... [2021-10-13 01:14:36,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:14:36,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:14:36,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:14:36,976 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:14:36,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:14:37,002 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:14:37,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:37 WrapperNode [2021-10-13 01:14:37,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:14:37,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:14:37,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:14:37,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:14:37,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:37" (1/1) ... [2021-10-13 01:14:37,021 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:37" (1/1) ... [2021-10-13 01:14:37,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:14:37,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:14:37,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:14:37,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:14:37,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:37" (1/1) ... [2021-10-13 01:14:37,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:37" (1/1) ... [2021-10-13 01:14:37,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:37" (1/1) ... [2021-10-13 01:14:37,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:37" (1/1) ... [2021-10-13 01:14:37,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:37" (1/1) ... [2021-10-13 01:14:37,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:37" (1/1) ... [2021-10-13 01:14:37,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:37" (1/1) ... [2021-10-13 01:14:37,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:14:37,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:14:37,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:14:37,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:14:37,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:37" (1/1) ... [2021-10-13 01:14:37,074 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:14:37,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c18347-ef1a-4d69-b852-88f09fdf15c7/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:14:37,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c18347-ef1a-4d69-b852-88f09fdf15c7/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:14:37,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c18347-ef1a-4d69-b852-88f09fdf15c7/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-13 01:14:37,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:14:37,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:14:37,343 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:14:37,343 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-13 01:14:37,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:14:37 BoogieIcfgContainer [2021-10-13 01:14:37,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:14:37,348 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-13 01:14:37,348 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-13 01:14:37,352 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-13 01:14:37,353 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:14:37,353 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 01:14:36" (1/3) ... [2021-10-13 01:14:37,355 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@79d01f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 01:14:37, skipping insertion in model container [2021-10-13 01:14:37,356 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:14:37,356 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:37" (2/3) ... [2021-10-13 01:14:37,357 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@79d01f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 01:14:37, skipping insertion in model container [2021-10-13 01:14:37,357 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:14:37,357 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:14:37" (3/3) ... [2021-10-13 01:14:37,359 INFO L389 chiAutomizerObserver]: Analyzing ICFG Division-2.c [2021-10-13 01:14:37,416 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-13 01:14:37,416 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-13 01:14:37,416 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-13 01:14:37,417 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-13 01:14:37,417 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-13 01:14:37,417 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-13 01:14:37,417 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-13 01:14:37,418 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-13 01:14:37,435 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:14:37,458 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-13 01:14:37,458 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:14:37,458 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:14:37,466 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 01:14:37,466 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-13 01:14:37,466 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-13 01:14:37,467 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:14:37,468 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-13 01:14:37,468 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:14:37,468 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:14:37,468 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 01:14:37,469 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-13 01:14:37,477 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~y~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0; 6#L14-2true [2021-10-13 01:14:37,478 INFO L793 eck$LassoCheckResult]: Loop: 6#L14-2true assume !!(main_~y~0 >= 0 && main_~y~0 <= 10);main_~y~0 := (if 1 + 2 * main_~y~0 < 0 && 0 != (1 + 2 * main_~y~0) % 2 then 1 + (1 + 2 * main_~y~0) / 2 else (1 + 2 * main_~y~0) / 2); 6#L14-2true [2021-10-13 01:14:37,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:14:37,490 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-13 01:14:37,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:14:37,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676280883] [2021-10-13 01:14:37,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:14:37,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:14:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:14:37,614 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:14:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:14:37,648 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:14:37,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:14:37,652 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2021-10-13 01:14:37,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:14:37,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019396613] [2021-10-13 01:14:37,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:14:37,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:14:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:14:37,697 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:14:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:14:37,707 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:14:37,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:14:37,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-13 01:14:37,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:14:37,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723121033] [2021-10-13 01:14:37,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:14:37,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:14:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:14:37,723 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:14:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:14:37,735 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:14:38,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.10 01:14:38 BoogieIcfgContainer [2021-10-13 01:14:38,001 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-13 01:14:38,002 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:14:38,002 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:14:38,002 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:14:38,003 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:14:37" (3/4) ... [2021-10-13 01:14:38,006 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-13 01:14:38,046 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c18347-ef1a-4d69-b852-88f09fdf15c7/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:14:38,046 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:14:38,049 INFO L168 Benchmark]: Toolchain (without parser) took 1355.50 ms. Allocated memory was 77.6 MB in the beginning and 104.9 MB in the end (delta: 27.3 MB). Free memory was 39.5 MB in the beginning and 51.3 MB in the end (delta: -11.9 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-10-13 01:14:38,050 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 77.6 MB. Free memory is still 55.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:14:38,051 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.57 ms. Allocated memory was 77.6 MB in the beginning and 104.9 MB in the end (delta: 27.3 MB). Free memory was 39.2 MB in the beginning and 80.7 MB in the end (delta: -41.4 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2021-10-13 01:14:38,052 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.93 ms. Allocated memory is still 104.9 MB. Free memory was 80.7 MB in the beginning and 79.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:14:38,054 INFO L168 Benchmark]: Boogie Preprocessor took 20.55 ms. Allocated memory is still 104.9 MB. Free memory was 79.5 MB in the beginning and 78.6 MB in the end (delta: 869.3 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 01:14:38,055 INFO L168 Benchmark]: RCFGBuilder took 284.50 ms. Allocated memory is still 104.9 MB. Free memory was 78.6 MB in the beginning and 70.8 MB in the end (delta: 7.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 01:14:38,056 INFO L168 Benchmark]: BuchiAutomizer took 653.37 ms. Allocated memory is still 104.9 MB. Free memory was 70.8 MB in the beginning and 53.0 MB in the end (delta: 17.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-13 01:14:38,057 INFO L168 Benchmark]: Witness Printer took 44.81 ms. Allocated memory is still 104.9 MB. Free memory was 53.0 MB in the beginning and 51.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:14:38,065 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 77.6 MB. Free memory is still 55.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 302.57 ms. Allocated memory was 77.6 MB in the beginning and 104.9 MB in the end (delta: 27.3 MB). Free memory was 39.2 MB in the beginning and 80.7 MB in the end (delta: -41.4 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.93 ms. Allocated memory is still 104.9 MB. Free memory was 80.7 MB in the beginning and 79.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.55 ms. Allocated memory is still 104.9 MB. Free memory was 79.5 MB in the beginning and 78.6 MB in the end (delta: 869.3 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 284.50 ms. Allocated memory is still 104.9 MB. Free memory was 78.6 MB in the beginning and 70.8 MB in the end (delta: 7.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 653.37 ms. Allocated memory is still 104.9 MB. Free memory was 70.8 MB in the beginning and 53.0 MB in the end (delta: 17.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 44.81 ms. Allocated memory is still 104.9 MB. Free memory was 53.0 MB in the beginning and 51.3 MB in the end (delta: 1.7 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 0.5s 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: 14]: 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 {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@114db483=0, \result=0, y=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 14]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int y = __VERIFIER_nondet_int(); Loop: [L14] COND TRUE y >= 0 && y <= 10 [L15] y = (2*y + 1) / 2 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-13 01:14:38,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c18347-ef1a-4d69-b852-88f09fdf15c7/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...