./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 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace9e889-21c2-4549-924e-3c1bcd6af592/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace9e889-21c2-4549-924e-3c1bcd6af592/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace9e889-21c2-4549-924e-3c1bcd6af592/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace9e889-21c2-4549-924e-3c1bcd6af592/bin/uautomizer-uyxdKDjOR8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Division-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace9e889-21c2-4549-924e-3c1bcd6af592/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace9e889-21c2-4549-924e-3c1bcd6af592/bin/uautomizer-uyxdKDjOR8 --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 bcd985be4d5b056143625ede780ed1bdcfd1a69390fda6644aa25539fa51e5a7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 19:12:54,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:12:54,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:12:55,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:12:55,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:12:55,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:12:55,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:12:55,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:12:55,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:12:55,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:12:55,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:12:55,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:12:55,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:12:55,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:12:55,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:12:55,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:12:55,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:12:55,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:12:55,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:12:55,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:12:55,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:12:55,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:12:55,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:12:55,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:12:55,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:12:55,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:12:55,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:12:55,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:12:55,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:12:55,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:12:55,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:12:55,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:12:55,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:12:55,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:12:55,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:12:55,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:12:55,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:12:55,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:12:55,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:12:55,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:12:55,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:12:55,031 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace9e889-21c2-4549-924e-3c1bcd6af592/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-12-13 19:12:55,046 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:12:55,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:12:55,046 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:12:55,046 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:12:55,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:12:55,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:12:55,047 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:12:55,048 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-12-13 19:12:55,048 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-12-13 19:12:55,048 INFO L138 SettingsManager]: * Use old map elimination=false [2022-12-13 19:12:55,048 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-12-13 19:12:55,048 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-12-13 19:12:55,048 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-12-13 19:12:55,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:12:55,049 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:12:55,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:12:55,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:12:55,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-12-13 19:12:55,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-12-13 19:12:55,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-12-13 19:12:55,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:12:55,050 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-12-13 19:12:55,050 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:12:55,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-12-13 19:12:55,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:12:55,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:12:55,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:12:55,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:12:55,052 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-12-13 19:12:55,052 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_ace9e889-21c2-4549-924e-3c1bcd6af592/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace9e889-21c2-4549-924e-3c1bcd6af592/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcd985be4d5b056143625ede780ed1bdcfd1a69390fda6644aa25539fa51e5a7 [2022-12-13 19:12:55,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:12:55,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:12:55,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:12:55,240 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:12:55,241 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:12:55,242 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace9e889-21c2-4549-924e-3c1bcd6af592/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/termination-crafted/Division-2.c [2022-12-13 19:12:57,848 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:12:57,995 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:12:57,995 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace9e889-21c2-4549-924e-3c1bcd6af592/sv-benchmarks/c/termination-crafted/Division-2.c [2022-12-13 19:12:58,001 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace9e889-21c2-4549-924e-3c1bcd6af592/bin/uautomizer-uyxdKDjOR8/data/85a663404/f27359f4ae82497aa67b130395ffff87/FLAG2ebdfc53e [2022-12-13 19:12:58,015 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace9e889-21c2-4549-924e-3c1bcd6af592/bin/uautomizer-uyxdKDjOR8/data/85a663404/f27359f4ae82497aa67b130395ffff87 [2022-12-13 19:12:58,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:12:58,020 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:12:58,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:12:58,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:12:58,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:12:58,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:12:58" (1/1) ... [2022-12-13 19:12:58,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b948acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:12:58, skipping insertion in model container [2022-12-13 19:12:58,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:12:58" (1/1) ... [2022-12-13 19:12:58,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:12:58,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:12:58,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:12:58,188 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:12:58,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:12:58,212 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:12:58,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:12:58 WrapperNode [2022-12-13 19:12:58,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:12:58,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:12:58,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:12:58,214 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:12:58,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:12:58" (1/1) ... [2022-12-13 19:12:58,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:12:58" (1/1) ... [2022-12-13 19:12:58,241 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 11 [2022-12-13 19:12:58,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:12:58,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:12:58,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:12:58,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:12:58,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:12:58" (1/1) ... [2022-12-13 19:12:58,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:12:58" (1/1) ... [2022-12-13 19:12:58,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:12:58" (1/1) ... [2022-12-13 19:12:58,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:12:58" (1/1) ... [2022-12-13 19:12:58,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:12:58" (1/1) ... [2022-12-13 19:12:58,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:12:58" (1/1) ... [2022-12-13 19:12:58,257 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:12:58" (1/1) ... [2022-12-13 19:12:58,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:12:58" (1/1) ... [2022-12-13 19:12:58,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:12:58,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:12:58,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:12:58,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:12:58,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:12:58" (1/1) ... [2022-12-13 19:12:58,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:12:58,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace9e889-21c2-4549-924e-3c1bcd6af592/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:12:58,290 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace9e889-21c2-4549-924e-3c1bcd6af592/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:12:58,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace9e889-21c2-4549-924e-3c1bcd6af592/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-12-13 19:12:58,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:12:58,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:12:58,372 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:12:58,374 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:12:58,421 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:12:58,427 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:12:58,427 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 19:12:58,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:12:58 BoogieIcfgContainer [2022-12-13 19:12:58,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:12:58,429 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-12-13 19:12:58,429 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-12-13 19:12:58,432 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-12-13 19:12:58,433 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 19:12:58,433 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.12 07:12:58" (1/3) ... [2022-12-13 19:12:58,434 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5497172f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 07:12:58, skipping insertion in model container [2022-12-13 19:12:58,434 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 19:12:58,434 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:12:58" (2/3) ... [2022-12-13 19:12:58,434 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5497172f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 07:12:58, skipping insertion in model container [2022-12-13 19:12:58,434 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 19:12:58,434 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:12:58" (3/3) ... [2022-12-13 19:12:58,436 INFO L332 chiAutomizerObserver]: Analyzing ICFG Division-2.c [2022-12-13 19:12:58,476 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-12-13 19:12:58,476 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-12-13 19:12:58,477 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-12-13 19:12:58,477 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-12-13 19:12:58,477 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-12-13 19:12:58,477 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-12-13 19:12:58,477 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-12-13 19:12:58,477 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-12-13 19:12:58,490 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-12-13 19:12:58,505 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-12-13 19:12:58,505 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:12:58,505 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:12:58,509 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-12-13 19:12:58,509 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-12-13 19:12:58,509 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-12-13 19:12:58,509 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-12-13 19:12:58,510 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-12-13 19:12:58,510 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:12:58,510 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:12:58,510 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-12-13 19:12:58,510 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-12-13 19:12:58,515 INFO L748 eck$LassoCheckResult]: Stem: 4#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~y~0#1;main_~y~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 6#L14-2true [2022-12-13 19:12:58,515 INFO L750 eck$LassoCheckResult]: Loop: 6#L14-2true assume !!(main_~y~0#1 >= 0 && main_~y~0#1 <= 10);main_~y~0#1 := (if 1 + 2 * main_~y~0#1 < 0 && 0 != (1 + 2 * main_~y~0#1) % 2 then 1 + (1 + 2 * main_~y~0#1) / 2 else (1 + 2 * main_~y~0#1) / 2); 6#L14-2true [2022-12-13 19:12:58,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:12:58,519 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-12-13 19:12:58,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:12:58,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197638953] [2022-12-13 19:12:58,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:12:58,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:12:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:12:58,577 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:12:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:12:58,591 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:12:58,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:12:58,593 INFO L85 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2022-12-13 19:12:58,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:12:58,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426598497] [2022-12-13 19:12:58,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:12:58,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:12:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:12:58,605 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:12:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:12:58,610 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:12:58,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:12:58,611 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-12-13 19:12:58,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:12:58,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876639359] [2022-12-13 19:12:58,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:12:58,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:12:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:12:58,616 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:12:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:12:58,620 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:12:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:12:58,687 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:12:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:12:58,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.12 07:12:58 BoogieIcfgContainer [2022-12-13 19:12:58,703 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-12-13 19:12:58,704 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 19:12:58,704 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 19:12:58,704 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 19:12:58,705 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:12:58" (3/4) ... [2022-12-13 19:12:58,706 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-12-13 19:12:58,731 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace9e889-21c2-4549-924e-3c1bcd6af592/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 19:12:58,731 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 19:12:58,732 INFO L158 Benchmark]: Toolchain (without parser) took 712.44ms. Allocated memory is still 167.8MB. Free memory was 119.5MB in the beginning and 123.4MB in the end (delta: -3.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:12:58,733 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 115.3MB. Free memory is still 89.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:12:58,733 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.99ms. Allocated memory is still 167.8MB. Free memory was 119.1MB in the beginning and 110.3MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 19:12:58,733 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.18ms. Allocated memory is still 167.8MB. Free memory was 110.3MB in the beginning and 109.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:12:58,734 INFO L158 Benchmark]: Boogie Preprocessor took 17.01ms. Allocated memory is still 167.8MB. Free memory was 109.0MB in the beginning and 107.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:12:58,734 INFO L158 Benchmark]: RCFGBuilder took 168.50ms. Allocated memory is still 167.8MB. Free memory was 107.8MB in the beginning and 99.8MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 19:12:58,735 INFO L158 Benchmark]: BuchiAutomizer took 274.23ms. Allocated memory is still 167.8MB. Free memory was 99.4MB in the beginning and 125.0MB in the end (delta: -25.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:12:58,735 INFO L158 Benchmark]: Witness Printer took 27.37ms. Allocated memory is still 167.8MB. Free memory was 125.0MB in the beginning and 123.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:12:58,739 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 115.3MB. Free memory is still 89.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 191.99ms. Allocated memory is still 167.8MB. Free memory was 119.1MB in the beginning and 110.3MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.18ms. Allocated memory is still 167.8MB. Free memory was 110.3MB in the beginning and 109.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.01ms. Allocated memory is still 167.8MB. Free memory was 109.0MB in the beginning and 107.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 168.50ms. Allocated memory is still 167.8MB. Free memory was 107.8MB in the beginning and 99.8MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 274.23ms. Allocated memory is still 167.8MB. Free memory was 99.4MB in the beginning and 125.0MB in the end (delta: -25.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 27.37ms. Allocated memory is still 167.8MB. Free memory was 125.0MB in the beginning and 123.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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 0.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.1s. 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: 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 InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 14]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. 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. - 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! [2022-12-13 19:12:58,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace9e889-21c2-4549-924e-3c1bcd6af592/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)