./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/while_infinite_loop_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d 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_1.3.100.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/loops/while_infinite_loop_3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash 3aac8fad8f983ba6915be6b6d24065853819d497 ................................................................................................................................................................................................................................................................................................................................ 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 0.1.25-9a8b2e8 [2020-10-20 07:05:02,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 07:05:02,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 07:05:02,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 07:05:02,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 07:05:02,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 07:05:02,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 07:05:02,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 07:05:02,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 07:05:02,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 07:05:02,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 07:05:02,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 07:05:02,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 07:05:02,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 07:05:02,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 07:05:02,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 07:05:02,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 07:05:02,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 07:05:02,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 07:05:02,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 07:05:02,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 07:05:02,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 07:05:02,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 07:05:02,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 07:05:02,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 07:05:02,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 07:05:02,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 07:05:02,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 07:05:02,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 07:05:02,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 07:05:02,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 07:05:02,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 07:05:02,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 07:05:02,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 07:05:02,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 07:05:02,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 07:05:02,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 07:05:02,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 07:05:02,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 07:05:02,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 07:05:02,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 07:05:02,888 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-20 07:05:02,912 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 07:05:02,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 07:05:02,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 07:05:02,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 07:05:02,914 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 07:05:02,914 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 07:05:02,914 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 07:05:02,915 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 07:05:02,915 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 07:05:02,915 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 07:05:02,915 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 07:05:02,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 07:05:02,916 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 07:05:02,916 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 07:05:02,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 07:05:02,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 07:05:02,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 07:05:02,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 07:05:02,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 07:05:02,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 07:05:02,918 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 07:05:02,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 07:05:02,918 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 07:05:02,918 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 07:05:02,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 07:05:02,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 07:05:02,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 07:05:02,919 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 07:05:02,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 07:05:02,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 07:05:02,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 07:05:02,920 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 07:05:02,921 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 07:05:02,922 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3aac8fad8f983ba6915be6b6d24065853819d497 [2020-10-20 07:05:03,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 07:05:03,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 07:05:03,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 07:05:03,135 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 07:05:03,136 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 07:05:03,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/while_infinite_loop_3.c [2020-10-20 07:05:03,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/031a4b155/9b4e11f66f2e46b5b9069dc3c9d1b8e8/FLAG0e3660303 [2020-10-20 07:05:03,707 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 07:05:03,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_3.c [2020-10-20 07:05:03,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/031a4b155/9b4e11f66f2e46b5b9069dc3c9d1b8e8/FLAG0e3660303 [2020-10-20 07:05:04,078 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/031a4b155/9b4e11f66f2e46b5b9069dc3c9d1b8e8 [2020-10-20 07:05:04,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 07:05:04,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 07:05:04,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 07:05:04,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 07:05:04,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 07:05:04,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 07:05:04" (1/1) ... [2020-10-20 07:05:04,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b3f9189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:04, skipping insertion in model container [2020-10-20 07:05:04,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 07:05:04" (1/1) ... [2020-10-20 07:05:04,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 07:05:04,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 07:05:04,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 07:05:04,369 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 07:05:04,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 07:05:04,405 INFO L208 MainTranslator]: Completed translation [2020-10-20 07:05:04,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:04 WrapperNode [2020-10-20 07:05:04,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 07:05:04,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 07:05:04,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 07:05:04,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 07:05:04,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:04" (1/1) ... [2020-10-20 07:05:04,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:04" (1/1) ... [2020-10-20 07:05:04,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 07:05:04,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 07:05:04,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 07:05:04,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 07:05:04,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:04" (1/1) ... [2020-10-20 07:05:04,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:04" (1/1) ... [2020-10-20 07:05:04,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:04" (1/1) ... [2020-10-20 07:05:04,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:04" (1/1) ... [2020-10-20 07:05:04,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:04" (1/1) ... [2020-10-20 07:05:04,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:04" (1/1) ... [2020-10-20 07:05:04,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:04" (1/1) ... [2020-10-20 07:05:04,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 07:05:04,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 07:05:04,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 07:05:04,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 07:05:04,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:04" (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 [2020-10-20 07:05:04,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 07:05:04,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 07:05:04,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 07:05:04,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 07:05:04,737 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 07:05:04,737 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-20 07:05:04,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:05:04 BoogieIcfgContainer [2020-10-20 07:05:04,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 07:05:04,740 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 07:05:04,740 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 07:05:04,744 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 07:05:04,745 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:05:04,746 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 07:05:04" (1/3) ... [2020-10-20 07:05:04,747 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@66d02c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 07:05:04, skipping insertion in model container [2020-10-20 07:05:04,747 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:05:04,748 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:04" (2/3) ... [2020-10-20 07:05:04,748 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@66d02c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 07:05:04, skipping insertion in model container [2020-10-20 07:05:04,748 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:05:04,749 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:05:04" (3/3) ... [2020-10-20 07:05:04,750 INFO L373 chiAutomizerObserver]: Analyzing ICFG while_infinite_loop_3.c [2020-10-20 07:05:04,808 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 07:05:04,809 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 07:05:04,809 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 07:05:04,809 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 07:05:04,810 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 07:05:04,810 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 07:05:04,810 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 07:05:04,810 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 07:05:04,826 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-10-20 07:05:04,850 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-20 07:05:04,851 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:05:04,851 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:05:04,860 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 07:05:04,860 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 07:05:04,860 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 07:05:04,860 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-10-20 07:05:04,862 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-20 07:05:04,862 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:05:04,862 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:05:04,863 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 07:05:04,863 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 07:05:04,873 INFO L794 eck$LassoCheckResult]: Stem: 8#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~x~0 := 0; 7#L-1true havoc main_#res; 18#L6-2true [2020-10-20 07:05:04,873 INFO L796 eck$LassoCheckResult]: Loop: 18#L6-2true assume !false; 3#L16loopEntrytrue assume false; 17#L16-2true __VERIFIER_assert_#in~cond := (if 0 == ~x~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5#L6true assume !(0 == __VERIFIER_assert_~cond); 18#L6-2true [2020-10-20 07:05:04,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:05:04,881 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2020-10-20 07:05:04,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:05:04,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593833695] [2020-10-20 07:05:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:05:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:05:05,025 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:05:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:05:05,042 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:05:05,063 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:05:05,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:05:05,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1269329, now seen corresponding path program 1 times [2020-10-20 07:05:05,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:05:05,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964107494] [2020-10-20 07:05:05,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:05:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:05:05,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 07:05:05,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964107494] [2020-10-20 07:05:05,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 07:05:05,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 07:05:05,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641729222] [2020-10-20 07:05:05,101 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-20 07:05:05,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 07:05:05,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 07:05:05,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 07:05:05,115 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-10-20 07:05:05,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 07:05:05,120 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2020-10-20 07:05:05,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 07:05:05,122 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 7 transitions. [2020-10-20 07:05:05,123 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 07:05:05,126 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 6 states and 6 transitions. [2020-10-20 07:05:05,127 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-10-20 07:05:05,127 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-10-20 07:05:05,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 6 transitions. [2020-10-20 07:05:05,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 07:05:05,128 INFO L691 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2020-10-20 07:05:05,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 6 transitions. [2020-10-20 07:05:05,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2020-10-20 07:05:05,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-20 07:05:05,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2020-10-20 07:05:05,148 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2020-10-20 07:05:05,148 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2020-10-20 07:05:05,148 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 07:05:05,149 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 6 transitions. [2020-10-20 07:05:05,149 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 07:05:05,149 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:05:05,149 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:05:05,150 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 07:05:05,150 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 07:05:05,150 INFO L794 eck$LassoCheckResult]: Stem: 33#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~x~0 := 0; 31#L-1 havoc main_#res; 32#L6-2 [2020-10-20 07:05:05,150 INFO L796 eck$LassoCheckResult]: Loop: 32#L6-2 assume !false; 34#L16loopEntry assume !false;~x~0 := 0; 35#L16-2 __VERIFIER_assert_#in~cond := (if 0 == ~x~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 36#L6 assume !(0 == __VERIFIER_assert_~cond); 32#L6-2 [2020-10-20 07:05:05,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:05:05,151 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2020-10-20 07:05:05,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:05:05,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118607919] [2020-10-20 07:05:05,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:05:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:05:05,166 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:05:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:05:05,189 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:05:05,195 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:05:05,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:05:05,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1271251, now seen corresponding path program 1 times [2020-10-20 07:05:05,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:05:05,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381843577] [2020-10-20 07:05:05,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:05:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:05:05,205 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:05:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:05:05,209 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:05:05,212 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:05:05,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:05:05,212 INFO L82 PathProgramCache]: Analyzing trace with hash 889698453, now seen corresponding path program 1 times [2020-10-20 07:05:05,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:05:05,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431669883] [2020-10-20 07:05:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:05:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:05:05,227 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:05:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:05:05,240 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:05:05,245 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:05:05,530 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-10-20 07:05:05,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 07:05:05 BoogieIcfgContainer [2020-10-20 07:05:05,635 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 07:05:05,636 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 07:05:05,636 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 07:05:05,636 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 07:05:05,637 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:05:04" (3/4) ... [2020-10-20 07:05:05,640 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-20 07:05:05,681 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 07:05:05,681 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 07:05:05,683 INFO L168 Benchmark]: Toolchain (without parser) took 1599.25 ms. Allocated memory was 40.4 MB in the beginning and 45.6 MB in the end (delta: 5.2 MB). Free memory was 18.0 MB in the beginning and 25.3 MB in the end (delta: -7.3 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 07:05:05,684 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 30.9 MB. Free memory was 17.1 MB in the beginning and 17.1 MB in the end (delta: 35.0 kB). Peak memory consumption was 35.0 kB. Max. memory is 14.3 GB. [2020-10-20 07:05:05,685 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.71 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 17.2 MB in the beginning and 18.1 MB in the end (delta: -844.3 kB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. [2020-10-20 07:05:05,686 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.90 ms. Allocated memory is still 41.4 MB. Free memory was 18.1 MB in the beginning and 16.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 07:05:05,687 INFO L168 Benchmark]: Boogie Preprocessor took 22.45 ms. Allocated memory is still 41.4 MB. Free memory was 16.3 MB in the beginning and 15.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 07:05:05,687 INFO L168 Benchmark]: RCFGBuilder took 279.33 ms. Allocated memory was 41.4 MB in the beginning and 43.0 MB in the end (delta: 1.6 MB). Free memory was 15.1 MB in the beginning and 19.1 MB in the end (delta: -4.0 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. [2020-10-20 07:05:05,688 INFO L168 Benchmark]: BuchiAutomizer took 895.60 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 18.9 MB in the beginning and 27.1 MB in the end (delta: -8.2 MB). Peak memory consumption was 10.7 MB. Max. memory is 14.3 GB. [2020-10-20 07:05:05,689 INFO L168 Benchmark]: Witness Printer took 45.45 ms. Allocated memory is still 45.6 MB. Free memory was 27.1 MB in the beginning and 25.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 07:05:05,694 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 30.9 MB. Free memory was 17.1 MB in the beginning and 17.1 MB in the end (delta: 35.0 kB). Peak memory consumption was 35.0 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 315.71 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 17.2 MB in the beginning and 18.1 MB in the end (delta: -844.3 kB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 30.90 ms. Allocated memory is still 41.4 MB. Free memory was 18.1 MB in the beginning and 16.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 22.45 ms. Allocated memory is still 41.4 MB. Free memory was 16.3 MB in the beginning and 15.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 279.33 ms. Allocated memory was 41.4 MB in the beginning and 43.0 MB in the end (delta: 1.6 MB). Free memory was 15.1 MB in the beginning and 19.1 MB in the end (delta: -4.0 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 895.60 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 18.9 MB in the beginning and 27.1 MB in the end (delta: -8.2 MB). Peak memory consumption was 10.7 MB. Max. memory is 14.3 GB. * Witness Printer took 45.45 ms. Allocated memory is still 45.6 MB. Free memory was 27.1 MB in the beginning and 25.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 2 locations. The remainder module has 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.8s and 2 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 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 7 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI1 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: 26]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=25192} State at position 1 is {cond=1, NULL=0, NULL=0, NULL=0, NULL=25195, NULL=0, \result=0, NULL=25193, NULL=25192, \old(cond)=1, NULL=0, x=0, NULL=25194} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 5]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L12] int x=0; Loop: [L26] COND TRUE 1 [L16] COND TRUE 1 [L17] x=0 [L6] COND FALSE !(!(cond)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...