./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8ac84b1b-d404-4b29-b13a-176dc538a4b3/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8ac84b1b-d404-4b29-b13a-176dc538a4b3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8ac84b1b-d404-4b29-b13a-176dc538a4b3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8ac84b1b-d404-4b29-b13a-176dc538a4b3/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Division-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8ac84b1b-d404-4b29-b13a-176dc538a4b3/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8ac84b1b-d404-4b29-b13a-176dc538a4b3/bin/uautomizer --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 0.2.0-a4ecdab [2020-11-28 02:58:25,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:58:25,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:58:25,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:58:25,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:58:25,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:58:25,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:58:25,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:58:25,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:58:25,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:58:25,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:58:25,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:58:25,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:58:25,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:58:25,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:58:25,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:58:25,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:58:25,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:58:25,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:58:25,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:58:25,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:58:25,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:58:25,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:58:25,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:58:25,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:58:25,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:58:25,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:58:25,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:58:25,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:58:25,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:58:25,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:58:25,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:58:25,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:58:25,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:58:25,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:58:25,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:58:25,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:58:25,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:58:25,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:58:25,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:58:25,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:58:25,430 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8ac84b1b-d404-4b29-b13a-176dc538a4b3/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 02:58:25,469 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:58:25,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:58:25,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:58:25,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:58:25,472 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:58:25,472 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 02:58:25,472 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 02:58:25,472 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 02:58:25,473 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 02:58:25,473 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 02:58:25,474 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 02:58:25,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:58:25,475 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:58:25,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:58:25,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:58:25,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 02:58:25,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 02:58:25,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 02:58:25,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:58:25,476 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 02:58:25,476 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:58:25,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 02:58:25,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:58:25,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:58:25,477 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 02:58:25,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:58:25,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:58:25,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:58:25,478 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 02:58:25,479 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 02:58:25,479 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-vcloud-master/worker/run_dir_8ac84b1b-d404-4b29-b13a-176dc538a4b3/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8ac84b1b-d404-4b29-b13a-176dc538a4b3/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d089d3bcb050ed43a9f47a1e8909790d01358f90 [2020-11-28 02:58:25,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:58:25,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:58:25,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:58:25,849 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:58:25,850 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:58:25,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8ac84b1b-d404-4b29-b13a-176dc538a4b3/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Division-2.c [2020-11-28 02:58:25,935 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8ac84b1b-d404-4b29-b13a-176dc538a4b3/bin/uautomizer/data/83ef962e4/9670e62d91944ad3a7c64eb3af6f6406/FLAGf5b739321 [2020-11-28 02:58:26,422 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:58:26,422 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8ac84b1b-d404-4b29-b13a-176dc538a4b3/sv-benchmarks/c/termination-crafted/Division-2.c [2020-11-28 02:58:26,436 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8ac84b1b-d404-4b29-b13a-176dc538a4b3/bin/uautomizer/data/83ef962e4/9670e62d91944ad3a7c64eb3af6f6406/FLAGf5b739321 [2020-11-28 02:58:26,784 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8ac84b1b-d404-4b29-b13a-176dc538a4b3/bin/uautomizer/data/83ef962e4/9670e62d91944ad3a7c64eb3af6f6406 [2020-11-28 02:58:26,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:58:26,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:58:26,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:26,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:58:26,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:58:26,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:26" (1/1) ... [2020-11-28 02:58:26,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eefa7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:26, skipping insertion in model container [2020-11-28 02:58:26,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:26" (1/1) ... [2020-11-28 02:58:26,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:58:26,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:58:26,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:26,993 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:58:27,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:27,029 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:58:27,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:27 WrapperNode [2020-11-28 02:58:27,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:27,031 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:27,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:58:27,031 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:58:27,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:27" (1/1) ... [2020-11-28 02:58:27,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:27" (1/1) ... [2020-11-28 02:58:27,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:27,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:58:27,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:58:27,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:58:27,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:27" (1/1) ... [2020-11-28 02:58:27,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:27" (1/1) ... [2020-11-28 02:58:27,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:27" (1/1) ... [2020-11-28 02:58:27,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:27" (1/1) ... [2020-11-28 02:58:27,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:27" (1/1) ... [2020-11-28 02:58:27,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:27" (1/1) ... [2020-11-28 02:58:27,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:27" (1/1) ... [2020-11-28 02:58:27,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:58:27,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:58:27,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:58:27,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:58:27,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ac84b1b-d404-4b29-b13a-176dc538a4b3/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:27,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:58:27,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:58:27,318 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:58:27,318 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 02:58:27,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:27 BoogieIcfgContainer [2020-11-28 02:58:27,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:58:27,322 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 02:58:27,322 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 02:58:27,326 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 02:58:27,327 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:58:27,328 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:58:26" (1/3) ... [2020-11-28 02:58:27,329 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@30436765 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:58:27, skipping insertion in model container [2020-11-28 02:58:27,330 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:58:27,330 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:27" (2/3) ... [2020-11-28 02:58:27,331 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@30436765 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:58:27, skipping insertion in model container [2020-11-28 02:58:27,332 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:58:27,332 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:27" (3/3) ... [2020-11-28 02:58:27,334 INFO L373 chiAutomizerObserver]: Analyzing ICFG Division-2.c [2020-11-28 02:58:27,405 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 02:58:27,405 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 02:58:27,405 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 02:58:27,406 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:58:27,406 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:58:27,406 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 02:58:27,406 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:58:27,406 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 02:58:27,419 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-11-28 02:58:27,439 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:27,439 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:58:27,439 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:58:27,445 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 02:58:27,446 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:58:27,446 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 02:58:27,446 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-11-28 02:58:27,447 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:27,447 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:58:27,447 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:58:27,447 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 02:58:27,448 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:58:27,455 INFO L794 eck$LassoCheckResult]: Stem: 3#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 [2020-11-28 02:58:27,455 INFO L796 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 [2020-11-28 02:58:27,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:27,465 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-28 02:58:27,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:27,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051033578] [2020-11-28 02:58:27,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:27,552 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:27,560 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:27,581 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:27,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:27,586 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2020-11-28 02:58:27,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:27,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668980773] [2020-11-28 02:58:27,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:27,617 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:27,629 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:27,632 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:27,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:27,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-28 02:58:27,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:27,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570468678] [2020-11-28 02:58:27,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:27,659 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:27,675 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:27,678 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:27,943 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 13 [2020-11-28 02:58:27,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:58:27 BoogieIcfgContainer [2020-11-28 02:58:27,997 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 02:58:27,998 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:58:27,998 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:58:27,999 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:58:27,999 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:27" (3/4) ... [2020-11-28 02:58:28,002 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-28 02:58:28,048 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8ac84b1b-d404-4b29-b13a-176dc538a4b3/bin/uautomizer/witness.graphml [2020-11-28 02:58:28,051 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:58:28,054 INFO L168 Benchmark]: Toolchain (without parser) took 1263.97 ms. Allocated memory is still 119.5 MB. Free memory was 82.6 MB in the beginning and 64.5 MB in the end (delta: 18.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:28,056 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 119.5 MB. Free memory was 92.7 MB in the beginning and 92.7 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:28,059 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.84 ms. Allocated memory is still 119.5 MB. Free memory was 82.4 MB in the beginning and 95.8 MB in the end (delta: -13.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:28,059 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.59 ms. Allocated memory is still 119.5 MB. Free memory was 95.8 MB in the beginning and 94.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:28,060 INFO L168 Benchmark]: Boogie Preprocessor took 18.42 ms. Allocated memory is still 119.5 MB. Free memory was 94.4 MB in the beginning and 93.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:28,061 INFO L168 Benchmark]: RCFGBuilder took 241.05 ms. Allocated memory is still 119.5 MB. Free memory was 93.4 MB in the beginning and 86.0 MB in the end (delta: 7.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:28,061 INFO L168 Benchmark]: BuchiAutomizer took 675.32 ms. Allocated memory is still 119.5 MB. Free memory was 85.4 MB in the beginning and 66.1 MB in the end (delta: 19.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:28,062 INFO L168 Benchmark]: Witness Printer took 52.92 ms. Allocated memory is still 119.5 MB. Free memory was 66.1 MB in the beginning and 64.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:28,065 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 119.5 MB. Free memory was 92.7 MB in the beginning and 92.7 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 239.84 ms. Allocated memory is still 119.5 MB. Free memory was 82.4 MB in the beginning and 95.8 MB in the end (delta: -13.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.59 ms. Allocated memory is still 119.5 MB. Free memory was 95.8 MB in the beginning and 94.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.42 ms. Allocated memory is still 119.5 MB. Free memory was 94.4 MB in the beginning and 93.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 241.05 ms. Allocated memory is still 119.5 MB. Free memory was 93.4 MB in the beginning and 86.0 MB in the end (delta: 7.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 675.32 ms. Allocated memory is still 119.5 MB. Free memory was 85.4 MB in the beginning and 66.1 MB in the end (delta: 19.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 52.92 ms. Allocated memory is still 119.5 MB. Free memory was 66.1 MB in the beginning and 64.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.5s 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@ddb675=0, \result=0, y=1} - 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! Received shutdown request...