./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-crafted/Madrid_true-no-overflow_false-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0ed9222f Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/svcomp/c/termination-crafted/Madrid_true-no-overflow_false-termination_true-valid-memsafety.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 a2e3cac0a2b7a3ca917b5aba0246714aae086d70 ................................................................................................................................................................................................................................................................................................................................................ 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 0.1.24-0ed9222-m [2019-01-14 02:14:10,857 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 02:14:10,859 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 02:14:10,873 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 02:14:10,873 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 02:14:10,874 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 02:14:10,877 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 02:14:10,879 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 02:14:10,881 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 02:14:10,882 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 02:14:10,883 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 02:14:10,883 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 02:14:10,885 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 02:14:10,886 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 02:14:10,889 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 02:14:10,890 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 02:14:10,893 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 02:14:10,898 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 02:14:10,903 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 02:14:10,907 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 02:14:10,913 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 02:14:10,914 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 02:14:10,921 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 02:14:10,923 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 02:14:10,923 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 02:14:10,924 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 02:14:10,929 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 02:14:10,932 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 02:14:10,934 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 02:14:10,935 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 02:14:10,935 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 02:14:10,938 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 02:14:10,938 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 02:14:10,938 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 02:14:10,940 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 02:14:10,940 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 02:14:10,943 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-01-14 02:14:10,970 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 02:14:10,971 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 02:14:10,973 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 02:14:10,973 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 02:14:10,973 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 02:14:10,973 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-01-14 02:14:10,973 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-01-14 02:14:10,974 INFO L133 SettingsManager]: * Use old map elimination=false [2019-01-14 02:14:10,974 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2019-01-14 02:14:10,974 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2019-01-14 02:14:10,974 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-01-14 02:14:10,974 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 02:14:10,976 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 02:14:10,976 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 02:14:10,976 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 02:14:10,977 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-01-14 02:14:10,977 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-01-14 02:14:10,977 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-01-14 02:14:10,978 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 02:14:10,978 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-01-14 02:14:10,978 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-14 02:14:10,978 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-01-14 02:14:10,979 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 02:14:10,979 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 02:14:10,979 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-01-14 02:14:10,979 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 02:14:10,979 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 02:14:10,980 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-01-14 02:14:10,982 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-01-14 02:14:10,982 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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 -> a2e3cac0a2b7a3ca917b5aba0246714aae086d70 [2019-01-14 02:14:11,020 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 02:14:11,033 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 02:14:11,038 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 02:14:11,040 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 02:14:11,042 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 02:14:11,043 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted/Madrid_true-no-overflow_false-termination_true-valid-memsafety.c [2019-01-14 02:14:11,112 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2de0ede28/20a1d86178934b60b5f4afd366ce5767/FLAG3315ee992 [2019-01-14 02:14:11,554 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 02:14:11,554 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted/Madrid_true-no-overflow_false-termination_true-valid-memsafety.c [2019-01-14 02:14:11,561 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2de0ede28/20a1d86178934b60b5f4afd366ce5767/FLAG3315ee992 [2019-01-14 02:14:11,919 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2de0ede28/20a1d86178934b60b5f4afd366ce5767 [2019-01-14 02:14:11,923 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 02:14:11,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 02:14:11,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 02:14:11,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 02:14:11,929 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 02:14:11,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 02:14:11" (1/1) ... [2019-01-14 02:14:11,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22dfad1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:14:11, skipping insertion in model container [2019-01-14 02:14:11,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 02:14:11" (1/1) ... [2019-01-14 02:14:11,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 02:14:11,958 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 02:14:12,200 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 02:14:12,208 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 02:14:12,224 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 02:14:12,240 INFO L195 MainTranslator]: Completed translation [2019-01-14 02:14:12,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:14:12 WrapperNode [2019-01-14 02:14:12,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 02:14:12,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 02:14:12,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 02:14:12,242 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 02:14:12,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:14:12" (1/1) ... [2019-01-14 02:14:12,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:14:12" (1/1) ... [2019-01-14 02:14:12,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 02:14:12,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 02:14:12,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 02:14:12,285 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 02:14:12,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:14:12" (1/1) ... [2019-01-14 02:14:12,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:14:12" (1/1) ... [2019-01-14 02:14:12,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:14:12" (1/1) ... [2019-01-14 02:14:12,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:14:12" (1/1) ... [2019-01-14 02:14:12,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:14:12" (1/1) ... [2019-01-14 02:14:12,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:14:12" (1/1) ... [2019-01-14 02:14:12,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:14:12" (1/1) ... [2019-01-14 02:14:12,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 02:14:12,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 02:14:12,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 02:14:12,319 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 02:14:12,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:14:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-01-14 02:14:12,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 02:14:12,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 02:14:12,578 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 02:14:12,578 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2019-01-14 02:14:12,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 02:14:12 BoogieIcfgContainer [2019-01-14 02:14:12,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 02:14:12,581 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-01-14 02:14:12,581 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-01-14 02:14:12,585 INFO L276 PluginConnector]: BuchiAutomizer initialized [2019-01-14 02:14:12,586 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-14 02:14:12,586 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.01 02:14:11" (1/3) ... [2019-01-14 02:14:12,587 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@435c2f71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.01 02:14:12, skipping insertion in model container [2019-01-14 02:14:12,587 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-14 02:14:12,587 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:14:12" (2/3) ... [2019-01-14 02:14:12,588 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@435c2f71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.01 02:14:12, skipping insertion in model container [2019-01-14 02:14:12,588 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-14 02:14:12,588 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 02:14:12" (3/3) ... [2019-01-14 02:14:12,591 INFO L375 chiAutomizerObserver]: Analyzing ICFG Madrid_true-no-overflow_false-termination_true-valid-memsafety.c [2019-01-14 02:14:12,642 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 02:14:12,642 INFO L374 BuchiCegarLoop]: Interprodecural is true [2019-01-14 02:14:12,642 INFO L375 BuchiCegarLoop]: Hoare is false [2019-01-14 02:14:12,643 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-01-14 02:14:12,643 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 02:14:12,643 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 02:14:12,643 INFO L379 BuchiCegarLoop]: Difference is false [2019-01-14 02:14:12,643 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 02:14:12,643 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-01-14 02:14:12,659 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2019-01-14 02:14:12,687 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-01-14 02:14:12,687 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 02:14:12,687 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 02:14:12,694 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-14 02:14:12,695 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-01-14 02:14:12,695 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2019-01-14 02:14:12,696 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2019-01-14 02:14:12,696 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-01-14 02:14:12,697 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 02:14:12,697 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 02:14:12,698 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-14 02:14:12,698 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-01-14 02:14:12,707 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~x~0;havoc main_~x~0;main_~x~0 := 7; 6#L14-2true [2019-01-14 02:14:12,707 INFO L796 eck$LassoCheckResult]: Loop: 6#L14-2true assume !!(0 != ~unnamed0~0~true);main_~x~0 := 2; 6#L14-2true [2019-01-14 02:14:12,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:14:12,715 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-01-14 02:14:12,717 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:14:12,718 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:14:12,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:14:12,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:14:12,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:14:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:14:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:14:12,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:14:12,827 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2019-01-14 02:14:12,827 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:14:12,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:14:12,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:14:12,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:14:12,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:14:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:14:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:14:12,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:14:12,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-01-14 02:14:12,839 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:14:12,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:14:12,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:14:12,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:14:12,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:14:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:14:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:14:12,950 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:14:12,951 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:14:12,951 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:14:12,952 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:14:12,952 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-14 02:14:12,952 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:14:12,952 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:14:12,952 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:14:12,953 INFO L131 ssoRankerPreferences]: Filename of dumped script: Madrid_true-no-overflow_false-termination_true-valid-memsafety.c_Iteration1_Lasso [2019-01-14 02:14:12,953 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:14:12,953 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:14:12,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:14:13,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:14:13,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:14:13,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:14:13,255 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:14:13,255 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-01-14 02:14:13,268 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:14:13,268 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:14:13,312 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:14:13,312 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 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 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:14:13,321 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:14:13,322 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:14:13,343 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:14:13,343 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-01-14 02:14:13,351 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:14:13,351 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:14:13,356 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:14:13,356 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:14:13,382 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:14:13,382 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:14:13,410 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-14 02:14:13,411 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:14:13,426 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:14:13,426 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=7} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=-8}, {ULTIMATE.start_main_~x~0=1}, {ULTIMATE.start_main_~x~0=2}] Lambdas: [0, 0, 0] Nus: [0, 0] [2019-01-14 02:14:13,462 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2019-01-14 02:14:13,466 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2019-01-14 02:14:13,466 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2019-01-14 02:14:13,467 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2019-01-14 02:14:13,468 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2019-01-14 02:14:13,469 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2019-01-14 02:14:13,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.01 02:14:13 BoogieIcfgContainer [2019-01-14 02:14:13,483 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-01-14 02:14:13,484 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 02:14:13,484 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 02:14:13,484 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 02:14:13,485 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 02:14:12" (3/4) ... [2019-01-14 02:14:13,488 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2019-01-14 02:14:13,522 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 02:14:13,522 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 02:14:13,523 INFO L168 Benchmark]: Toolchain (without parser) took 1599.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -121.5 MB). Peak memory consumption was 16.4 MB. Max. memory is 11.5 GB. [2019-01-14 02:14:13,525 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 02:14:13,526 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.22 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-14 02:14:13,527 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.04 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 02:14:13,527 INFO L168 Benchmark]: Boogie Preprocessor took 33.14 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 02:14:13,528 INFO L168 Benchmark]: RCFGBuilder took 261.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -187.6 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2019-01-14 02:14:13,529 INFO L168 Benchmark]: BuchiAutomizer took 902.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 55.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 11.5 GB. [2019-01-14 02:14:13,530 INFO L168 Benchmark]: Witness Printer took 38.24 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 02:14:13,534 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 316.22 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.04 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.14 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 261.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -187.6 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 902.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 55.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 11.5 GB. * Witness Printer took 38.24 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false * 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 0.8s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. 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: Lassos: inital6 mio100 ax333 hnf100 lsp30 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq233 hnf100 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - GeometricNonTerminationArgumentResult [Line: 14]: Nontermination argument in form of an infinite program execution. [2019-01-14 02:14:13,543 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2019-01-14 02:14:13,543 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2019-01-14 02:14:13,544 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2019-01-14 02:14:13,544 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2019-01-14 02:14:13,544 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2019-01-14 02:14:13,545 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2019-01-14 02:14:13,545 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2019-01-14 02:14:13,545 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2019-01-14 02:14:13,546 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2019-01-14 02:14:13,546 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2019-01-14 02:14:13,546 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2019-01-14 02:14:13,546 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false Nontermination argument in form of an infinite execution State at position 0 is {~unnamed0~0~true=1, \result=0, ~unnamed0~0~false=0, x=0} State at position 1 is {~unnamed0~0~true=1, \result=0, ~unnamed0~0~false=0, x=7} For i>1, the state at position i is {~unnamed0~0~true=1 + sum_{k=0}^i 0, \result=0 + sum_{k=0}^i 0, ~unnamed0~0~false=0 + sum_{k=0}^i 0, x=7 + sum_{k=0}^i -8*0^k + 1*0^k + 2*0^k} - StatisticsResult: NonterminationArgumentStatistics Fixpoint 3GEVs Lambdas: [0, 0, 0] Mus: [0, 0] - NonterminatingLassoResult [Line: 14]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L12] int x; [L13] x = 7 Loop: [L14] COND TRUE \read(true) [L15] x = 2 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...