./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/Madrid.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/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 ../sv-benchmarks/c/termination-crafted/Madrid.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 0.1.24-30f4e4a [2019-11-28 02:56:16,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:56:16,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:56:16,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:56:16,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:56:16,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:56:16,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:56:16,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:56:16,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:56:16,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:56:16,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:56:16,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:56:16,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:56:16,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:56:16,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:56:16,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:56:16,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:56:16,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:56:16,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:56:16,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:56:16,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:56:16,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:56:16,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:56:16,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:56:16,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:56:16,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:56:16,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:56:16,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:56:16,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:56:16,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:56:16,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:56:16,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:56:16,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:56:16,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:56:16,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:56:16,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:56:16,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:56:16,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:56:16,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:56:16,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:56:16,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:56:16,630 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-28 02:56:16,651 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:56:16,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:56:16,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:56:16,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:56:16,655 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:56:16,656 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 02:56:16,656 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 02:56:16,656 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 02:56:16,657 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 02:56:16,657 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 02:56:16,658 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 02:56:16,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:56:16,659 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:56:16,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:56:16,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:56:16,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 02:56:16,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 02:56:16,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 02:56:16,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:56:16,661 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 02:56:16,661 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:56:16,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 02:56:16,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:56:16,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:56:16,662 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 02:56:16,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:56:16,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:56:16,663 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 02:56:16,664 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 02:56:16,664 INFO L138 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 [2019-11-28 02:56:17,000 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:56:17,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:56:17,024 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:56:17,026 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:56:17,027 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:56:17,028 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Madrid.c [2019-11-28 02:56:17,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe60a7723/075f3c1ac58841468b99781fc98f6092/FLAG87d53afaa [2019-11-28 02:56:17,562 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:56:17,563 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Madrid.c [2019-11-28 02:56:17,569 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe60a7723/075f3c1ac58841468b99781fc98f6092/FLAG87d53afaa [2019-11-28 02:56:17,970 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe60a7723/075f3c1ac58841468b99781fc98f6092 [2019-11-28 02:56:17,973 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:56:17,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:56:17,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:56:17,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:56:17,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:56:17,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:17" (1/1) ... [2019-11-28 02:56:17,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35b8aee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:17, skipping insertion in model container [2019-11-28 02:56:17,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:17" (1/1) ... [2019-11-28 02:56:17,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:56:18,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:56:18,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:56:18,198 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:56:18,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:56:18,233 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:56:18,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:18 WrapperNode [2019-11-28 02:56:18,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:56:18,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:56:18,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:56:18,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:56:18,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:18" (1/1) ... [2019-11-28 02:56:18,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:18" (1/1) ... [2019-11-28 02:56:18,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:56:18,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:56:18,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:56:18,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:56:18,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:18" (1/1) ... [2019-11-28 02:56:18,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:18" (1/1) ... [2019-11-28 02:56:18,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:18" (1/1) ... [2019-11-28 02:56:18,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:18" (1/1) ... [2019-11-28 02:56:18,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:18" (1/1) ... [2019-11-28 02:56:18,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:18" (1/1) ... [2019-11-28 02:56:18,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:18" (1/1) ... [2019-11-28 02:56:18,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:56:18,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:56:18,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:56:18,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:56:18,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:18" (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 [2019-11-28 02:56:18,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:56:18,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:56:18,609 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:56:18,610 INFO L297 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 02:56:18,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:18 BoogieIcfgContainer [2019-11-28 02:56:18,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:56:18,612 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 02:56:18,612 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 02:56:18,616 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 02:56:18,618 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:56:18,619 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:56:17" (1/3) ... [2019-11-28 02:56:18,621 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5449a1f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:56:18, skipping insertion in model container [2019-11-28 02:56:18,621 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:56:18,621 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:18" (2/3) ... [2019-11-28 02:56:18,622 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5449a1f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:56:18, skipping insertion in model container [2019-11-28 02:56:18,622 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:56:18,623 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:18" (3/3) ... [2019-11-28 02:56:18,633 INFO L371 chiAutomizerObserver]: Analyzing ICFG Madrid.c [2019-11-28 02:56:18,690 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 02:56:18,691 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 02:56:18,691 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 02:56:18,691 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:56:18,691 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:56:18,691 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 02:56:18,692 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:56:18,692 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 02:56:18,707 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2019-11-28 02:56:18,731 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 02:56:18,731 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:56:18,732 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:56:18,740 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 02:56:18,740 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-28 02:56:18,740 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 02:56:18,740 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2019-11-28 02:56:18,741 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 02:56:18,741 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:56:18,741 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:56:18,741 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 02:56:18,742 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-28 02:56:18,750 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~x~0;havoc main_~x~0;main_~x~0 := 7; 6#L14-2true [2019-11-28 02:56:18,750 INFO L796 eck$LassoCheckResult]: Loop: 6#L14-2true assume !!(0 != ~unnamed0~0~true);main_~x~0 := 2; 6#L14-2true [2019-11-28 02:56:18,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:18,756 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-28 02:56:18,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:18,767 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048844537] [2019-11-28 02:56:18,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:18,878 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:18,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:18,879 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2019-11-28 02:56:18,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:18,880 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525350983] [2019-11-28 02:56:18,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:18,889 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:18,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:18,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-28 02:56:18,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:18,892 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172479633] [2019-11-28 02:56:18,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:18,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:18,904 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:18,949 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:56:18,950 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:56:18,951 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:56:18,951 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:56:18,951 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:56:18,952 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:18,952 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:56:18,952 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:56:18,953 INFO L133 ssoRankerPreferences]: Filename of dumped script: Madrid.c_Iteration1_Lasso [2019-11-28 02:56:18,953 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:56:18,953 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:56:18,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:18,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:19,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:19,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:19,172 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:56:19,173 INFO L404 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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:19,181 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:56:19,181 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:56:19,193 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:56:19,194 INFO L440 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 [2019-11-28 02:56:19,201 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:56:19,201 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:56:19,206 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:56:19,206 INFO L440 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) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:19,212 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:56:19,213 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:56:19,217 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:56:19,218 INFO L440 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 [2019-11-28 02:56:19,250 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:56:19,251 INFO L160 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 [2019-11-28 02:56:19,263 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:56:19,263 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:56:19,285 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:56:19,285 INFO L440 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=1}, {ULTIMATE.start_main_~x~0=-8}, {ULTIMATE.start_main_~x~0=2}] Lambdas: [8, 0, 0] Nus: [1, 0] [2019-11-28 02:56:19,302 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2019-11-28 02:56:19,307 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2019-11-28 02:56:19,311 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2019-11-28 02:56:19,312 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2019-11-28 02:56:19,313 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2019-11-28 02:56:19,313 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2019-11-28 02:56:19,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:56:19 BoogieIcfgContainer [2019-11-28 02:56:19,331 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 02:56:19,332 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:56:19,333 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:56:19,336 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:56:19,338 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:18" (3/4) ... [2019-11-28 02:56:19,340 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-28 02:56:19,378 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:56:19,378 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:56:19,381 INFO L168 Benchmark]: Toolchain (without parser) took 1404.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -96.1 MB). Peak memory consumption was 39.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:56:19,381 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:56:19,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.55 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 944.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-28 02:56:19,383 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.26 ms. Allocated memory is still 1.0 GB. Free memory is still 944.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:56:19,384 INFO L168 Benchmark]: Boogie Preprocessor took 103.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -187.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:56:19,385 INFO L168 Benchmark]: RCFGBuilder took 232.14 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: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2019-11-28 02:56:19,385 INFO L168 Benchmark]: BuchiAutomizer took 718.51 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: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:56:19,386 INFO L168 Benchmark]: Witness Printer took 45.92 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:56:19,391 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 255.55 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 944.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.26 ms. Allocated memory is still 1.0 GB. Free memory is still 944.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 103.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -187.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 232.14 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: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 718.51 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: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 11.5 GB. * Witness Printer took 45.92 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: 6.8 MB). Peak memory consumption was 6.8 MB. 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 0.6s 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: 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. [2019-11-28 02:56:19,400 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2019-11-28 02:56:19,401 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2019-11-28 02:56:19,401 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2019-11-28 02:56:19,402 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2019-11-28 02:56:19,402 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2019-11-28 02:56:19,402 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2019-11-28 02:56:19,402 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2019-11-28 02:56:19,403 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2019-11-28 02:56:19,403 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2019-11-28 02:56:19,403 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2019-11-28 02:56:19,404 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2019-11-28 02:56:19,404 WARN L417 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, x=0, ~unnamed0~0~false=0} State at position 1 is {~unnamed0~0~true=1, \result=0, x=7, ~unnamed0~0~false=0} 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, x=7 + sum_{k=0}^i 1*8^k + -8*0^k + -8*k*8^(k-1) + 2*0^k, ~unnamed0~0~false=0 + sum_{k=0}^i 0} - StatisticsResult: NonterminationArgumentStatistics Unbounded Execution 3GEVs Lambdas: [8, 0, 0] Mus: [1, 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...