./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/terminator_02-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f6fb2bb1 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/loops/terminator_02-1.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 373a42d768821561cf3a59e950efa4caf2842fe4 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-f6fb2bb [2019-11-19 20:00:18,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 20:00:18,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 20:00:18,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 20:00:18,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 20:00:18,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 20:00:18,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 20:00:18,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 20:00:18,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 20:00:18,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 20:00:18,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 20:00:18,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 20:00:18,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 20:00:18,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 20:00:18,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 20:00:18,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 20:00:18,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 20:00:18,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 20:00:18,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 20:00:18,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 20:00:18,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 20:00:18,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 20:00:18,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 20:00:18,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 20:00:18,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 20:00:18,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 20:00:18,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 20:00:18,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 20:00:18,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 20:00:18,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 20:00:18,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 20:00:18,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 20:00:18,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 20:00:18,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 20:00:18,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 20:00:18,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 20:00:18,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 20:00:18,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 20:00:18,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 20:00:18,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 20:00:18,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 20:00:18,916 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-19 20:00:18,932 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 20:00:18,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 20:00:18,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 20:00:18,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 20:00:18,934 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 20:00:18,934 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-19 20:00:18,934 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-19 20:00:18,934 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-19 20:00:18,935 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-19 20:00:18,935 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-19 20:00:18,935 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-19 20:00:18,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 20:00:18,935 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 20:00:18,936 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 20:00:18,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 20:00:18,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 20:00:18,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 20:00:18,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-19 20:00:18,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-19 20:00:18,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-19 20:00:18,937 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 20:00:18,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 20:00:18,938 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-19 20:00:18,938 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 20:00:18,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-19 20:00:18,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 20:00:18,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 20:00:18,939 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-19 20:00:18,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 20:00:18,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 20:00:18,939 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-19 20:00:18,940 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-19 20:00:18,941 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 -> 373a42d768821561cf3a59e950efa4caf2842fe4 [2019-11-19 20:00:19,294 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 20:00:19,308 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 20:00:19,312 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 20:00:19,314 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 20:00:19,314 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 20:00:19,315 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/terminator_02-1.c [2019-11-19 20:00:19,396 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd8984b5c/eac17602a4e2429593c88336a91c6d9b/FLAG6c6950fc4 [2019-11-19 20:00:19,874 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 20:00:19,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/terminator_02-1.c [2019-11-19 20:00:19,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd8984b5c/eac17602a4e2429593c88336a91c6d9b/FLAG6c6950fc4 [2019-11-19 20:00:20,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd8984b5c/eac17602a4e2429593c88336a91c6d9b [2019-11-19 20:00:20,263 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 20:00:20,264 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 20:00:20,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 20:00:20,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 20:00:20,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 20:00:20,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:20" (1/1) ... [2019-11-19 20:00:20,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a4363f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20, skipping insertion in model container [2019-11-19 20:00:20,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:20" (1/1) ... [2019-11-19 20:00:20,281 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 20:00:20,302 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 20:00:20,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 20:00:20,454 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 20:00:20,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 20:00:20,480 INFO L192 MainTranslator]: Completed translation [2019-11-19 20:00:20,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20 WrapperNode [2019-11-19 20:00:20,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 20:00:20,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 20:00:20,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 20:00:20,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 20:00:20,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20" (1/1) ... [2019-11-19 20:00:20,495 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20" (1/1) ... [2019-11-19 20:00:20,569 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 20:00:20,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 20:00:20,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 20:00:20,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 20:00:20,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20" (1/1) ... [2019-11-19 20:00:20,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20" (1/1) ... [2019-11-19 20:00:20,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20" (1/1) ... [2019-11-19 20:00:20,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20" (1/1) ... [2019-11-19 20:00:20,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20" (1/1) ... [2019-11-19 20:00:20,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20" (1/1) ... [2019-11-19 20:00:20,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20" (1/1) ... [2019-11-19 20:00:20,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 20:00:20,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 20:00:20,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 20:00:20,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 20:00:20,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20" (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 [2019-11-19 20:00:20,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 20:00:20,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 20:00:20,811 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 20:00:20,812 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-19 20:00:20,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:20 BoogieIcfgContainer [2019-11-19 20:00:20,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 20:00:20,814 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-19 20:00:20,814 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-19 20:00:20,819 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-19 20:00:20,820 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 20:00:20,820 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 08:00:20" (1/3) ... [2019-11-19 20:00:20,822 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9871af5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 08:00:20, skipping insertion in model container [2019-11-19 20:00:20,822 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 20:00:20,822 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20" (2/3) ... [2019-11-19 20:00:20,822 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9871af5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 08:00:20, skipping insertion in model container [2019-11-19 20:00:20,823 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 20:00:20,823 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:20" (3/3) ... [2019-11-19 20:00:20,825 INFO L371 chiAutomizerObserver]: Analyzing ICFG terminator_02-1.c [2019-11-19 20:00:20,883 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-19 20:00:20,883 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-19 20:00:20,883 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-19 20:00:20,883 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 20:00:20,883 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 20:00:20,884 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-19 20:00:20,884 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 20:00:20,884 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-19 20:00:20,913 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-19 20:00:20,947 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-19 20:00:20,948 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 20:00:20,948 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 20:00:20,958 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-19 20:00:20,958 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-19 20:00:20,958 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-19 20:00:20,959 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-19 20:00:20,960 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-19 20:00:20,961 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 20:00:20,961 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 20:00:20,961 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-19 20:00:20,961 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-19 20:00:20,972 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 10#L21-2true [2019-11-19 20:00:20,973 INFO L796 eck$LassoCheckResult]: Loop: 10#L21-2true assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 3#L21true assume 0 != main_~tmp~0 % 256;main_#t~post4 := main_~x~0;main_~x~0 := 1 + main_#t~post4;havoc main_#t~post4; 10#L21-2true [2019-11-19 20:00:20,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:00:20,980 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-19 20:00:20,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:00:20,993 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379661805] [2019-11-19 20:00:20,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:00:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:00:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:00:21,092 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 20:00:21,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:00:21,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-11-19 20:00:21,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:00:21,095 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777076667] [2019-11-19 20:00:21,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:00:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:00:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:00:21,120 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 20:00:21,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:00:21,126 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-11-19 20:00:21,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:00:21,127 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102209102] [2019-11-19 20:00:21,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:00:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:00:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:00:21,148 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 20:00:21,224 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 20:00:21,225 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 20:00:21,225 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 20:00:21,226 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 20:00:21,226 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 20:00:21,226 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:21,226 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 20:00:21,226 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 20:00:21,227 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration1_Loop [2019-11-19 20:00:21,227 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 20:00:21,227 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 20:00:21,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:21,254 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:21,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:21,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:21,418 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 20:00:21,419 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) [2019-11-19 20:00:21,427 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 20:00:21,427 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:21,437 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 20:00:21,438 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~z~0=101} Honda state: {ULTIMATE.start_main_~z~0=101} 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) [2019-11-19 20:00:21,450 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 20:00:21,450 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:21,466 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 20:00:21,466 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~tmp~0=-217, ULTIMATE.start_main_#t~nondet3=-217} Honda state: {ULTIMATE.start_main_~tmp~0=-217, ULTIMATE.start_main_#t~nondet3=-217} 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) [2019-11-19 20:00:21,477 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 20:00:21,477 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 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) [2019-11-19 20:00:21,500 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 20:00:21,501 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:21,510 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 20:00:21,512 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 20:00:21,513 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 20:00:21,513 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 20:00:21,513 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 20:00:21,513 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 20:00:21,513 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:21,514 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 20:00:21,514 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 20:00:21,514 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration1_Loop [2019-11-19 20:00:21,514 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 20:00:21,514 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 20:00:21,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:21,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:21,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:21,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:21,618 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 20:00:21,624 INFO L489 LassoAnalysis]: Using template 'affine'. 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 [2019-11-19 20:00:21,631 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 20:00:21,634 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 20:00:21,634 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 20:00:21,635 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 20:00:21,636 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 20:00:21,636 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 20:00:21,638 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 20:00:21,639 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 20:00:21,642 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 20:00:21,662 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 20:00:21,664 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 20:00:21,664 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 20:00:21,664 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 20:00:21,665 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 20:00:21,665 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 20:00:21,666 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 20:00:21,667 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:21,670 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 20:00:21,677 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 20:00:21,677 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 20:00:21,684 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 20:00:21,685 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 20:00:21,685 INFO L510 LassoAnalysis]: Proved termination. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:21,686 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [2019-11-19 20:00:21,699 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 20:00:21,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:00:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:00:21,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 20:00:21,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 20:00:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:00:21,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 20:00:21,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 20:00:21,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 20:00:21,796 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-19 20:00:21,797 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2019-11-19 20:00:21,873 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 3 states. Result 35 states and 45 transitions. Complement of second has 8 states. [2019-11-19 20:00:21,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-19 20:00:21,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 20:00:21,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2019-11-19 20:00:21,880 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-19 20:00:21,880 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 20:00:21,881 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-19 20:00:21,881 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 20:00:21,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-19 20:00:21,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 20:00:21,883 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 45 transitions. [2019-11-19 20:00:21,892 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-19 20:00:21,898 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 7 states and 10 transitions. [2019-11-19 20:00:21,899 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-19 20:00:21,899 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-19 20:00:21,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-11-19 20:00:21,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 20:00:21,900 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-19 20:00:21,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-11-19 20:00:21,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-19 20:00:21,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-19 20:00:21,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-11-19 20:00:21,927 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-19 20:00:21,927 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-19 20:00:21,927 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-19 20:00:21,927 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-11-19 20:00:21,928 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-19 20:00:21,928 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 20:00:21,928 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 20:00:21,928 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-19 20:00:21,929 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-19 20:00:21,929 INFO L794 eck$LassoCheckResult]: Stem: 86#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 87#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 82#L21 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 83#L21-2 [2019-11-19 20:00:21,929 INFO L796 eck$LassoCheckResult]: Loop: 83#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 88#L21 assume 0 != main_~tmp~0 % 256;main_#t~post4 := main_~x~0;main_~x~0 := 1 + main_#t~post4;havoc main_#t~post4; 83#L21-2 [2019-11-19 20:00:21,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:00:21,930 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-11-19 20:00:21,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:00:21,930 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002064256] [2019-11-19 20:00:21,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:00:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:00:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:00:21,945 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 20:00:21,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:00:21,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2019-11-19 20:00:21,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:00:21,946 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769483076] [2019-11-19 20:00:21,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:00:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:00:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:00:21,955 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 20:00:21,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:00:21,956 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2019-11-19 20:00:21,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:00:21,956 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203542094] [2019-11-19 20:00:21,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:00:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:00:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:00:21,975 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 20:00:22,001 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 20:00:22,002 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 20:00:22,002 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 20:00:22,002 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 20:00:22,002 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 20:00:22,002 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:22,003 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 20:00:22,003 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 20:00:22,003 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration2_Loop [2019-11-19 20:00:22,003 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 20:00:22,003 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 20:00:22,004 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:22,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:22,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:22,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:22,120 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 20:00:22,120 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 20:00:22,129 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 20:00:22,129 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:22,142 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 20:00:22,142 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~tmp~0=128, ULTIMATE.start_main_#t~nondet3=128} Honda state: {ULTIMATE.start_main_~tmp~0=128, ULTIMATE.start_main_#t~nondet3=128} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:22,153 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 20:00:22,153 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 20:00:22,177 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 20:00:22,177 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:22,188 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 20:00:22,191 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 20:00:22,191 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 20:00:22,191 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 20:00:22,191 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 20:00:22,192 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 20:00:22,192 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:22,192 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 20:00:22,192 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 20:00:22,192 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration2_Loop [2019-11-19 20:00:22,193 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 20:00:22,193 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 20:00:22,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:22,202 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:22,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:22,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:22,293 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 20:00:22,293 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 20:00:22,298 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 20:00:22,300 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 20:00:22,300 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 20:00:22,301 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 20:00:22,301 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 20:00:22,301 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 20:00:22,302 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 20:00:22,302 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:22,306 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 20:00:22,324 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 20:00:22,324 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 20:00:22,332 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 20:00:22,332 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 20:00:22,332 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 20:00:22,332 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:22,351 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 20:00:22,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:00:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:00:22,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 20:00:22,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 20:00:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:00:22,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 20:00:22,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 20:00:22,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 20:00:22,399 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-19 20:00:22,399 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-19 20:00:22,419 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 5 states. [2019-11-19 20:00:22,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-19 20:00:22,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 20:00:22,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-19 20:00:22,421 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-19 20:00:22,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 20:00:22,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-19 20:00:22,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 20:00:22,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2019-11-19 20:00:22,423 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 20:00:22,423 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2019-11-19 20:00:22,424 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-19 20:00:22,424 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2019-11-19 20:00:22,425 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-19 20:00:22,425 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-19 20:00:22,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2019-11-19 20:00:22,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 20:00:22,425 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-19 20:00:22,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2019-11-19 20:00:22,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-19 20:00:22,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-19 20:00:22,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2019-11-19 20:00:22,428 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-19 20:00:22,428 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-19 20:00:22,428 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-19 20:00:22,428 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2019-11-19 20:00:22,429 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-19 20:00:22,429 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 20:00:22,429 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 20:00:22,430 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2019-11-19 20:00:22,430 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-19 20:00:22,430 INFO L794 eck$LassoCheckResult]: Stem: 140#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 141#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 136#L21 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 137#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 144#L21 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 142#L21-2 [2019-11-19 20:00:22,430 INFO L796 eck$LassoCheckResult]: Loop: 142#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 143#L21 assume 0 != main_~tmp~0 % 256;main_#t~post4 := main_~x~0;main_~x~0 := 1 + main_#t~post4;havoc main_#t~post4; 142#L21-2 [2019-11-19 20:00:22,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:00:22,431 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 2 times [2019-11-19 20:00:22,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:00:22,431 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601711840] [2019-11-19 20:00:22,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:00:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:00:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:00:22,451 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 20:00:22,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:00:22,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2019-11-19 20:00:22,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:00:22,452 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209061545] [2019-11-19 20:00:22,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:00:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:00:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:00:22,461 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 20:00:22,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:00:22,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1364196307, now seen corresponding path program 2 times [2019-11-19 20:00:22,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:00:22,463 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434598591] [2019-11-19 20:00:22,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:00:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:00:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:00:22,496 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 20:00:22,522 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 20:00:22,522 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 20:00:22,522 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 20:00:22,522 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 20:00:22,522 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 20:00:22,523 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:22,523 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 20:00:22,523 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 20:00:22,523 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration3_Loop [2019-11-19 20:00:22,523 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 20:00:22,523 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 20:00:22,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:22,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:22,540 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:22,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:22,639 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 20:00:22,640 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 20:00:22,647 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 20:00:22,648 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 20:00:22,665 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 20:00:22,666 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:22,675 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 20:00:22,678 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 20:00:22,678 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 20:00:22,678 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 20:00:22,678 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 20:00:22,679 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 20:00:22,679 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:22,679 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 20:00:22,679 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 20:00:22,679 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration3_Loop [2019-11-19 20:00:22,679 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 20:00:22,680 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 20:00:22,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:22,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:22,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:22,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:22,815 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 20:00:22,816 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 20:00:22,825 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 20:00:22,827 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 20:00:22,827 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 20:00:22,827 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 20:00:22,827 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 20:00:22,827 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 20:00:22,829 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 20:00:22,829 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:22,833 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 20:00:22,837 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 20:00:22,837 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 20:00:22,845 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 20:00:22,846 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 20:00:22,847 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 20:00:22,847 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [2019-11-19 20:00:22,852 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:22,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:00:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:00:22,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 20:00:22,896 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 20:00:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:00:22,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 20:00:22,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 20:00:22,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 20:00:22,920 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-19 20:00:22,921 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-19 20:00:22,938 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2019-11-19 20:00:22,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-19 20:00:22,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 20:00:22,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-19 20:00:22,940 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-19 20:00:22,940 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 20:00:22,940 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-19 20:00:22,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:00:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:00:22,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 20:00:22,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 20:00:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:00:22,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 20:00:22,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 20:00:22,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 20:00:22,987 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-19 20:00:22,987 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-19 20:00:23,003 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2019-11-19 20:00:23,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-19 20:00:23,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 20:00:23,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-19 20:00:23,005 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-19 20:00:23,005 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 20:00:23,005 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-19 20:00:23,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:00:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:00:23,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 20:00:23,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 20:00:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:00:23,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 20:00:23,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 20:00:23,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 20:00:23,047 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-19 20:00:23,047 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-19 20:00:23,060 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 15 states and 23 transitions. Complement of second has 4 states. [2019-11-19 20:00:23,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-19 20:00:23,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 20:00:23,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-19 20:00:23,061 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-19 20:00:23,062 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 20:00:23,062 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 2 letters. [2019-11-19 20:00:23,062 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 20:00:23,062 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-19 20:00:23,063 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 20:00:23,063 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 23 transitions. [2019-11-19 20:00:23,064 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-19 20:00:23,065 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 19 transitions. [2019-11-19 20:00:23,065 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-19 20:00:23,065 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-19 20:00:23,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2019-11-19 20:00:23,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 20:00:23,065 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2019-11-19 20:00:23,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2019-11-19 20:00:23,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 5. [2019-11-19 20:00:23,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-19 20:00:23,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2019-11-19 20:00:23,067 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-11-19 20:00:23,067 INFO L591 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-11-19 20:00:23,067 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-19 20:00:23,067 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2019-11-19 20:00:23,068 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-19 20:00:23,068 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 20:00:23,068 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 20:00:23,068 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-19 20:00:23,069 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-19 20:00:23,069 INFO L794 eck$LassoCheckResult]: Stem: 287#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 284#L21-2 [2019-11-19 20:00:23,069 INFO L796 eck$LassoCheckResult]: Loop: 284#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 283#L21 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 284#L21-2 [2019-11-19 20:00:23,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:00:23,069 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-11-19 20:00:23,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:00:23,070 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167964102] [2019-11-19 20:00:23,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:00:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:00:23,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:00:23,075 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 20:00:23,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:00:23,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1286, now seen corresponding path program 1 times [2019-11-19 20:00:23,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:00:23,077 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592976906] [2019-11-19 20:00:23,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:00:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:00:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:00:23,102 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 20:00:23,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:00:23,106 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 3 times [2019-11-19 20:00:23,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:00:23,107 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996874330] [2019-11-19 20:00:23,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:00:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:00:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:00:23,126 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 20:00:23,193 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 20:00:23,193 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 20:00:23,193 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 20:00:23,193 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 20:00:23,194 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 20:00:23,194 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:23,194 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 20:00:23,194 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 20:00:23,194 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration4_Loop [2019-11-19 20:00:23,194 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 20:00:23,194 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 20:00:23,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:23,202 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:23,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:23,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:23,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:23,318 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 20:00:23,318 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 20:00:23,329 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 20:00:23,329 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:23,334 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 20:00:23,334 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 20:00:23,354 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 20:00:23,354 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 20:00:23,376 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 20:00:23,376 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Exception during sending of exit command (exit): Broken pipe Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:23,397 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 20:00:23,397 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 20:00:23,408 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 20:00:23,408 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~tmp~0=0, ULTIMATE.start_main_#t~nondet3=0} Honda state: {ULTIMATE.start_main_~tmp~0=0, ULTIMATE.start_main_#t~nondet3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 20:00:23,436 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 20:00:23,436 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:23,469 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 20:00:23,469 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 20:00:23,489 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 20:00:23,489 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=99} Honda state: {ULTIMATE.start_main_~x~0=99} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 4, 13] Nus: [1, 0] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 20:00:23,497 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 20:00:23,497 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 20:00:23,510 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 20:00:23,510 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:23,519 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 20:00:23,521 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 20:00:23,521 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 20:00:23,521 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 20:00:23,521 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 20:00:23,521 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 20:00:23,521 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:23,522 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 20:00:23,522 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 20:00:23,522 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration4_Loop [2019-11-19 20:00:23,522 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 20:00:23,522 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 20:00:23,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:23,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:23,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:23,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:23,543 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 20:00:23,616 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 20:00:23,616 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 20:00:23,624 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 20:00:23,626 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 20:00:23,627 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 20:00:23,627 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 20:00:23,627 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 20:00:23,627 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 20:00:23,628 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 20:00:23,628 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:23,630 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:23,635 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 20:00:23,637 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 20:00:23,637 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 20:00:23,637 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 20:00:23,637 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 20:00:23,637 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 20:00:23,639 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 20:00:23,639 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 20:00:23,641 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:23,647 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 20:00:23,648 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 20:00:23,649 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 20:00:23,649 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 20:00:23,649 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 20:00:23,649 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 20:00:23,651 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 20:00:23,651 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 20:00:23,654 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:23,663 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 20:00:23,665 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 20:00:23,666 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 20:00:23,666 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 20:00:23,666 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 20:00:23,666 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 20:00:23,667 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 20:00:23,667 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 20:00:23,670 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:23,680 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 20:00:23,681 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 20:00:23,681 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 20:00:23,681 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 20:00:23,681 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 20:00:23,682 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 20:00:23,682 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 20:00:23,683 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 20:00:23,686 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 20:00:23,691 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 20:00:23,691 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 20:00:23,699 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 20:00:23,700 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 20:00:23,700 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 20:00:23,700 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2019-11-19 20:00:23,710 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 20:00:23,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:00:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:00:23,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 20:00:23,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 20:00:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:00:23,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 20:00:23,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 20:00:23,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 20:00:23,746 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-19 20:00:23,746 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-19 20:00:23,760 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 11 states and 17 transitions. Complement of second has 4 states. [2019-11-19 20:00:23,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-19 20:00:23,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 20:00:23,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-19 20:00:23,761 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-19 20:00:23,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 20:00:23,762 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-19 20:00:23,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 20:00:23,762 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-19 20:00:23,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 20:00:23,763 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 17 transitions. [2019-11-19 20:00:23,764 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 20:00:23,764 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2019-11-19 20:00:23,764 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-19 20:00:23,764 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-19 20:00:23,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-19 20:00:23,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 20:00:23,765 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 20:00:23,765 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 20:00:23,765 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 20:00:23,765 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-19 20:00:23,765 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-19 20:00:23,765 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 20:00:23,765 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-19 20:00:23,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 08:00:23 BoogieIcfgContainer [2019-11-19 20:00:23,773 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-19 20:00:23,773 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 20:00:23,773 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 20:00:23,773 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 20:00:23,774 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:20" (3/4) ... [2019-11-19 20:00:23,778 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-19 20:00:23,778 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 20:00:23,780 INFO L168 Benchmark]: Toolchain (without parser) took 3515.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 211.3 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -163.2 MB). Peak memory consumption was 48.1 MB. Max. memory is 11.5 GB. [2019-11-19 20:00:23,781 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 20:00:23,782 INFO L168 Benchmark]: CACSL2BoogieTranslator took 215.62 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-19 20:00:23,782 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -185.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-19 20:00:23,783 INFO L168 Benchmark]: Boogie Preprocessor took 18.05 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. [2019-11-19 20:00:23,784 INFO L168 Benchmark]: RCFGBuilder took 226.21 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: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2019-11-19 20:00:23,784 INFO L168 Benchmark]: BuchiAutomizer took 2958.48 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 76.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -5.7 MB). Peak memory consumption was 70.8 MB. Max. memory is 11.5 GB. [2019-11-19 20:00:23,785 INFO L168 Benchmark]: Witness Printer took 4.81 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. [2019-11-19 20:00:23,789 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 215.62 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 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 87.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -185.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.05 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. * RCFGBuilder took 226.21 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: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2958.48 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 76.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -5.7 MB). Peak memory consumption was 70.8 MB. Max. memory is 11.5 GB. * Witness Printer took 4.81 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.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -2 * x + 199 and consists of 5 locations. One deterministic module has affine ranking function -2 * x + 199 and consists of 3 locations. One deterministic module has affine ranking function z and consists of 3 locations. One nondeterministic module has affine ranking function -2 * x + 199 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 25 SDtfs, 21 SDslu, 13 SDs, 0 SdLazy, 41 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax100 hnf100 lsp47 ukn100 mio100 lsp100 div444 bol100 ite100 ukn100 eq150 hnf48 smp82 dnf100 smp100 tf106 neg97 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 17ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...