./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 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted/Division-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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-20ed64e [2021-08-27 13:54:51,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 13:54:51,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 13:54:51,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 13:54:51,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 13:54:51,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 13:54:51,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 13:54:51,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 13:54:51,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 13:54:51,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 13:54:51,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 13:54:51,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 13:54:51,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 13:54:51,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 13:54:51,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 13:54:51,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 13:54:51,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 13:54:51,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 13:54:51,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 13:54:51,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 13:54:51,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 13:54:51,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 13:54:51,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 13:54:51,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 13:54:51,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 13:54:51,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 13:54:51,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 13:54:51,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 13:54:51,842 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 13:54:51,843 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 13:54:51,843 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 13:54:51,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 13:54:51,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 13:54:51,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 13:54:51,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 13:54:51,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 13:54:51,847 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 13:54:51,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 13:54:51,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 13:54:51,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 13:54:51,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 13:54:51,852 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-08-27 13:54:51,873 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 13:54:51,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 13:54:51,874 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 13:54:51,874 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 13:54:51,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 13:54:51,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 13:54:51,876 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 13:54:51,876 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 13:54:51,876 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 13:54:51,876 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 13:54:51,877 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 13:54:51,877 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 13:54:51,877 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 13:54:51,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 13:54:51,877 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 13:54:51,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 13:54:51,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 13:54:51,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 13:54:51,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 13:54:51,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 13:54:51,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 13:54:51,878 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 13:54:51,878 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 13:54:51,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 13:54:51,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 13:54:51,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 13:54:51,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 13:54:51,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 13:54:51,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 13:54:51,880 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 13:54:51,880 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d089d3bcb050ed43a9f47a1e8909790d01358f90 [2021-08-27 13:54:52,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 13:54:52,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 13:54:52,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 13:54:52,140 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 13:54:52,141 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 13:54:52,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Division-2.c [2021-08-27 13:54:52,197 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a5d25f76/18ea323654a44c29a08f0861b881ef9c/FLAG7e829abfe [2021-08-27 13:54:52,536 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 13:54:52,536 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Division-2.c [2021-08-27 13:54:52,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a5d25f76/18ea323654a44c29a08f0861b881ef9c/FLAG7e829abfe [2021-08-27 13:54:52,554 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a5d25f76/18ea323654a44c29a08f0861b881ef9c [2021-08-27 13:54:52,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 13:54:52,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 13:54:52,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 13:54:52,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 13:54:52,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 13:54:52,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:54:52" (1/1) ... [2021-08-27 13:54:52,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39a337a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:54:52, skipping insertion in model container [2021-08-27 13:54:52,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:54:52" (1/1) ... [2021-08-27 13:54:52,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 13:54:52,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 13:54:52,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 13:54:52,677 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 13:54:52,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 13:54:52,691 INFO L208 MainTranslator]: Completed translation [2021-08-27 13:54:52,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:54:52 WrapperNode [2021-08-27 13:54:52,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 13:54:52,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 13:54:52,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 13:54:52,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 13:54:52,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:54:52" (1/1) ... [2021-08-27 13:54:52,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:54:52" (1/1) ... [2021-08-27 13:54:52,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 13:54:52,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 13:54:52,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 13:54:52,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 13:54:52,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:54:52" (1/1) ... [2021-08-27 13:54:52,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:54:52" (1/1) ... [2021-08-27 13:54:52,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:54:52" (1/1) ... [2021-08-27 13:54:52,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:54:52" (1/1) ... [2021-08-27 13:54:52,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:54:52" (1/1) ... [2021-08-27 13:54:52,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:54:52" (1/1) ... [2021-08-27 13:54:52,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:54:52" (1/1) ... [2021-08-27 13:54:52,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 13:54:52,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 13:54:52,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 13:54:52,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 13:54:52,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:54:52" (1/1) ... [2021-08-27 13:54:52,743 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:54:52,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:54:52,762 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:54:52,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 13:54:52,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 13:54:52,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 13:54:52,904 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 13:54:52,904 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-27 13:54:52,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:54:52 BoogieIcfgContainer [2021-08-27 13:54:52,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 13:54:52,909 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 13:54:52,909 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 13:54:52,912 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 13:54:52,912 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 13:54:52,912 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 01:54:52" (1/3) ... [2021-08-27 13:54:52,913 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2884c62b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 01:54:52, skipping insertion in model container [2021-08-27 13:54:52,914 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 13:54:52,914 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:54:52" (2/3) ... [2021-08-27 13:54:52,914 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2884c62b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 01:54:52, skipping insertion in model container [2021-08-27 13:54:52,915 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 13:54:52,915 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:54:52" (3/3) ... [2021-08-27 13:54:52,917 INFO L389 chiAutomizerObserver]: Analyzing ICFG Division-2.c [2021-08-27 13:54:52,961 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 13:54:52,962 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 13:54:52,962 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 13:54:52,962 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 13:54:52,962 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 13:54:52,962 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 13:54:52,962 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 13:54:52,963 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 13:54:52,971 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) [2021-08-27 13:54:52,982 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-08-27 13:54:52,982 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 13:54:52,982 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 13:54:52,985 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-27 13:54:52,985 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-08-27 13:54:52,986 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 13:54:52,986 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) [2021-08-27 13:54:52,986 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-08-27 13:54:52,986 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 13:54:52,987 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 13:54:52,987 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-27 13:54:52,987 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-08-27 13:54:52,991 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 [2021-08-27 13:54:52,991 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 [2021-08-27 13:54:52,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:54:52,996 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-08-27 13:54:53,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:54:53,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910950289] [2021-08-27 13:54:53,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:54:53,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:54:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:54:53,047 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:54:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:54:53,063 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:54:53,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:54:53,067 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2021-08-27 13:54:53,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:54:53,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462012528] [2021-08-27 13:54:53,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:54:53,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:54:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:54:53,083 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:54:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:54:53,107 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:54:53,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:54:53,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-08-27 13:54:53,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:54:53,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679200547] [2021-08-27 13:54:53,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:54:53,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:54:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:54:53,121 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:54:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:54:53,130 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:54:53,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 01:54:53 BoogieIcfgContainer [2021-08-27 13:54:53,299 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 13:54:53,300 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 13:54:53,300 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 13:54:53,300 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 13:54:53,300 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:54:52" (3/4) ... [2021-08-27 13:54:53,302 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 13:54:53,325 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 13:54:53,325 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 13:54:53,327 INFO L168 Benchmark]: Toolchain (without parser) took 768.41 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 31.8 MB in the beginning and 40.2 MB in the end (delta: -8.4 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2021-08-27 13:54:53,329 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 54.5 MB. Free memory was 36.7 MB in the beginning and 36.7 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 13:54:53,330 INFO L168 Benchmark]: CACSL2BoogieTranslator took 132.35 ms. Allocated memory is still 54.5 MB. Free memory was 31.6 MB in the beginning and 36.6 MB in the end (delta: -5.1 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-08-27 13:54:53,332 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.83 ms. Allocated memory is still 54.5 MB. Free memory was 36.6 MB in the beginning and 35.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 13:54:53,333 INFO L168 Benchmark]: Boogie Preprocessor took 13.39 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 35.4 MB in the beginning and 53.5 MB in the end (delta: -18.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 13:54:53,334 INFO L168 Benchmark]: RCFGBuilder took 182.83 ms. Allocated memory is still 69.2 MB. Free memory was 53.3 MB in the beginning and 45.1 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 13:54:53,334 INFO L168 Benchmark]: BuchiAutomizer took 390.01 ms. Allocated memory is still 69.2 MB. Free memory was 45.1 MB in the beginning and 41.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-08-27 13:54:53,335 INFO L168 Benchmark]: Witness Printer took 25.84 ms. Allocated memory is still 69.2 MB. Free memory was 41.7 MB in the beginning and 40.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 13:54:53,339 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 54.5 MB. Free memory was 36.7 MB in the beginning and 36.7 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 132.35 ms. Allocated memory is still 54.5 MB. Free memory was 31.6 MB in the beginning and 36.6 MB in the end (delta: -5.1 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 16.83 ms. Allocated memory is still 54.5 MB. Free memory was 36.6 MB in the beginning and 35.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 13.39 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 35.4 MB in the beginning and 53.5 MB in the end (delta: -18.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 182.83 ms. Allocated memory is still 69.2 MB. Free memory was 53.3 MB in the beginning and 45.1 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 390.01 ms. Allocated memory is still 69.2 MB. Free memory was 45.1 MB in the beginning and 41.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Witness Printer took 25.84 ms. Allocated memory is still 69.2 MB. Free memory was 41.7 MB in the beginning and 40.2 MB in the end (delta: 1.5 MB). There was no memory consumed. 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 0.3s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. 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@666f2c2a=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! [2021-08-27 13:54:53,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...