./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/loops/terminator_02_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5ccee8ee-e8cd-48f6-a87f-fc42cfbf020f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5ccee8ee-e8cd-48f6-a87f-fc42cfbf020f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5ccee8ee-e8cd-48f6-a87f-fc42cfbf020f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5ccee8ee-e8cd-48f6-a87f-fc42cfbf020f/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/terminator_02_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_5ccee8ee-e8cd-48f6-a87f-fc42cfbf020f/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5ccee8ee-e8cd-48f6-a87f-fc42cfbf020f/bin-2019/uautomizer --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 73643ecf8e1581c13142517bcc63dc5d77c96d29 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 09:56:21,004 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 09:56:21,006 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 09:56:21,012 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 09:56:21,013 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 09:56:21,013 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 09:56:21,014 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 09:56:21,015 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 09:56:21,016 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 09:56:21,017 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 09:56:21,017 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 09:56:21,018 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 09:56:21,018 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 09:56:21,019 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 09:56:21,020 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 09:56:21,020 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 09:56:21,021 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 09:56:21,022 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 09:56:21,023 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 09:56:21,024 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 09:56:21,025 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 09:56:21,026 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 09:56:21,027 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 09:56:21,027 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 09:56:21,027 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 09:56:21,028 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 09:56:21,029 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 09:56:21,030 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 09:56:21,030 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 09:56:21,031 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 09:56:21,031 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 09:56:21,031 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 09:56:21,031 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 09:56:21,031 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 09:56:21,032 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 09:56:21,032 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 09:56:21,032 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5ccee8ee-e8cd-48f6-a87f-fc42cfbf020f/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-18 09:56:21,041 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 09:56:21,041 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 09:56:21,042 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 09:56:21,042 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 09:56:21,042 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 09:56:21,042 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 09:56:21,042 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 09:56:21,042 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 09:56:21,043 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 09:56:21,043 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 09:56:21,043 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 09:56:21,043 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 09:56:21,043 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 09:56:21,043 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 09:56:21,043 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 09:56:21,044 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 09:56:21,044 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 09:56:21,044 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 09:56:21,044 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 09:56:21,044 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 09:56:21,044 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 09:56:21,044 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 09:56:21,044 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 09:56:21,045 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 09:56:21,045 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 09:56:21,045 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 09:56:21,045 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 09:56:21,045 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 09:56:21,045 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 09:56:21,045 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 09:56:21,046 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 09:56:21,046 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 09:56:21,046 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_5ccee8ee-e8cd-48f6-a87f-fc42cfbf020f/bin-2019/uautomizer 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 -> 73643ecf8e1581c13142517bcc63dc5d77c96d29 [2018-11-18 09:56:21,067 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 09:56:21,076 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 09:56:21,078 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 09:56:21,079 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 09:56:21,079 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 09:56:21,080 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5ccee8ee-e8cd-48f6-a87f-fc42cfbf020f/bin-2019/uautomizer/../../sv-benchmarks/c/loops/terminator_02_false-unreach-call_true-termination.i [2018-11-18 09:56:21,117 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5ccee8ee-e8cd-48f6-a87f-fc42cfbf020f/bin-2019/uautomizer/data/ccaf033dd/f6a7e23eef92489ebafafc51487ebc8b/FLAG74aba8329 [2018-11-18 09:56:21,500 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 09:56:21,501 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5ccee8ee-e8cd-48f6-a87f-fc42cfbf020f/sv-benchmarks/c/loops/terminator_02_false-unreach-call_true-termination.i [2018-11-18 09:56:21,504 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5ccee8ee-e8cd-48f6-a87f-fc42cfbf020f/bin-2019/uautomizer/data/ccaf033dd/f6a7e23eef92489ebafafc51487ebc8b/FLAG74aba8329 [2018-11-18 09:56:21,515 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5ccee8ee-e8cd-48f6-a87f-fc42cfbf020f/bin-2019/uautomizer/data/ccaf033dd/f6a7e23eef92489ebafafc51487ebc8b [2018-11-18 09:56:21,517 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 09:56:21,518 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 09:56:21,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 09:56:21,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 09:56:21,521 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 09:56:21,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:56:21" (1/1) ... [2018-11-18 09:56:21,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4915a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:21, skipping insertion in model container [2018-11-18 09:56:21,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:56:21" (1/1) ... [2018-11-18 09:56:21,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 09:56:21,541 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 09:56:21,634 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:56:21,636 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 09:56:21,644 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:56:21,653 INFO L195 MainTranslator]: Completed translation [2018-11-18 09:56:21,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:21 WrapperNode [2018-11-18 09:56:21,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 09:56:21,654 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 09:56:21,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 09:56:21,654 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 09:56:21,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:21" (1/1) ... [2018-11-18 09:56:21,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:21" (1/1) ... [2018-11-18 09:56:21,672 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 09:56:21,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 09:56:21,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 09:56:21,673 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 09:56:21,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:21" (1/1) ... [2018-11-18 09:56:21,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:21" (1/1) ... [2018-11-18 09:56:21,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:21" (1/1) ... [2018-11-18 09:56:21,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:21" (1/1) ... [2018-11-18 09:56:21,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:21" (1/1) ... [2018-11-18 09:56:21,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:21" (1/1) ... [2018-11-18 09:56:21,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:21" (1/1) ... [2018-11-18 09:56:21,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 09:56:21,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 09:56:21,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 09:56:21,684 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 09:56:21,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5ccee8ee-e8cd-48f6-a87f-fc42cfbf020f/bin-2019/uautomizer/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 [2018-11-18 09:56:21,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 09:56:21,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 09:56:21,849 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 09:56:21,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:56:21 BoogieIcfgContainer [2018-11-18 09:56:21,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 09:56:21,850 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 09:56:21,850 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 09:56:21,853 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 09:56:21,854 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 09:56:21,854 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 09:56:21" (1/3) ... [2018-11-18 09:56:21,854 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@45d42bc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 09:56:21, skipping insertion in model container [2018-11-18 09:56:21,855 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 09:56:21,855 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:56:21" (2/3) ... [2018-11-18 09:56:21,855 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@45d42bc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 09:56:21, skipping insertion in model container [2018-11-18 09:56:21,855 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 09:56:21,855 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:56:21" (3/3) ... [2018-11-18 09:56:21,856 INFO L375 chiAutomizerObserver]: Analyzing ICFG terminator_02_false-unreach-call_true-termination.i [2018-11-18 09:56:21,903 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 09:56:21,904 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 09:56:21,904 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 09:56:21,904 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 09:56:21,904 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 09:56:21,904 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 09:56:21,904 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 09:56:21,904 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 09:56:21,905 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 09:56:21,913 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2018-11-18 09:56:21,928 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 09:56:21,929 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:56:21,929 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:56:21,934 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 09:56:21,934 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 09:56:21,934 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 09:56:21,934 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2018-11-18 09:56:21,935 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 09:56:21,935 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:56:21,935 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:56:21,936 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 09:56:21,936 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 09:56:21,940 INFO L794 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 12#L21-2true [2018-11-18 09:56:21,941 INFO L796 eck$LassoCheckResult]: Loop: 12#L21-2true assume true; 8#L18-1true assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 5#L21true 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; 12#L21-2true [2018-11-18 09:56:21,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:56:21,944 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-18 09:56:21,945 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:56:21,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:56:21,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:56:21,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:56:21,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:56:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:56:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:56:22,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:56:22,010 INFO L82 PathProgramCache]: Analyzing trace with hash 35946, now seen corresponding path program 1 times [2018-11-18 09:56:22,010 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:56:22,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:56:22,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:56:22,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:56:22,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:56:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:56:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:56:22,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:56:22,029 INFO L82 PathProgramCache]: Analyzing trace with hash 28694888, now seen corresponding path program 1 times [2018-11-18 09:56:22,029 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:56:22,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:56:22,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:56:22,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:56:22,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:56:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:56:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:56:22,089 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:56:22,090 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:56:22,090 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:56:22,090 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:56:22,090 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 09:56:22,090 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:56:22,090 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:56:22,091 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:56:22,091 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_false-unreach-call_true-termination.i_Iteration1_Loop [2018-11-18 09:56:22,091 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:56:22,091 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:56:22,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:22,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:22,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:22,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:22,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:22,262 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:56:22,263 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5ccee8ee-e8cd-48f6-a87f-fc42cfbf020f/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:56:22,267 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:56:22,267 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:56:22,272 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:56:22,272 INFO L448 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 /tmp/vcloud-vcloud-master/worker/working_dir_5ccee8ee-e8cd-48f6-a87f-fc42cfbf020f/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:56:22,288 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:56:22,288 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:56:22,290 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:56:22,290 INFO L448 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: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5ccee8ee-e8cd-48f6-a87f-fc42cfbf020f/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:56:22,305 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:56:22,305 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:56:22,311 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:56:22,311 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~tmp~0=-256, ULTIMATE.start_main_#t~nondet3=-256} Honda state: {ULTIMATE.start_main_~tmp~0=-256, ULTIMATE.start_main_#t~nondet3=-256} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5ccee8ee-e8cd-48f6-a87f-fc42cfbf020f/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:56:22,329 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:56:22,330 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5ccee8ee-e8cd-48f6-a87f-fc42cfbf020f/bin-2019/uautomizer/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 [2018-11-18 09:56:22,354 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 09:56:22,354 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:56:22,371 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 09:56:22,372 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:56:22,372 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:56:22,372 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:56:22,372 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:56:22,372 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 09:56:22,372 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:56:22,373 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:56:22,373 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:56:22,373 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_false-unreach-call_true-termination.i_Iteration1_Loop [2018-11-18 09:56:22,373 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:56:22,373 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:56:22,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:22,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:22,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:22,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:22,398 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:22,460 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:56:22,463 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 09:56:22,465 INFO L122 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 [2018-11-18 09:56:22,465 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:56:22,466 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:56:22,466 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:56:22,466 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:56:22,466 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:56:22,468 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:56:22,468 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:56:22,470 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:56:22,471 INFO L122 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 [2018-11-18 09:56:22,471 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:56:22,471 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:56:22,471 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:56:22,472 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:56:22,472 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:56:22,472 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:56:22,472 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:56:22,473 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:56:22,474 INFO L122 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 [2018-11-18 09:56:22,474 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:56:22,474 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:56:22,475 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:56:22,475 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:56:22,475 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:56:22,476 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:56:22,476 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:56:22,479 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:56:22,479 INFO L122 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 [2018-11-18 09:56:22,480 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:56:22,480 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:56:22,480 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:56:22,480 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:56:22,480 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:56:22,481 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:56:22,481 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:56:22,485 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 09:56:22,488 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 09:56:22,488 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 09:56:22,489 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 09:56:22,489 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 09:56:22,490 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 09:56:22,490 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2018-11-18 09:56:22,491 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 09:56:22,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:56:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:56:22,512 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:56:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:56:22,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:56:22,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:56:22,536 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 [2018-11-18 09:56:22,537 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states. Second operand 4 states. [2018-11-18 09:56:22,569 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states.. Second operand 4 states. Result 47 states and 55 transitions. Complement of second has 7 states. [2018-11-18 09:56:22,569 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 [2018-11-18 09:56:22,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 09:56:22,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 33 transitions. [2018-11-18 09:56:22,572 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 2 letters. Loop has 3 letters. [2018-11-18 09:56:22,572 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:56:22,572 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-18 09:56:22,573 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:56:22,573 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 2 letters. Loop has 6 letters. [2018-11-18 09:56:22,573 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:56:22,573 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 55 transitions. [2018-11-18 09:56:22,575 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 09:56:22,577 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 12 states and 15 transitions. [2018-11-18 09:56:22,578 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-11-18 09:56:22,578 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-18 09:56:22,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2018-11-18 09:56:22,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 09:56:22,578 INFO L705 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2018-11-18 09:56:22,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2018-11-18 09:56:22,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2018-11-18 09:56:22,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-11-18 09:56:22,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2018-11-18 09:56:22,594 INFO L728 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2018-11-18 09:56:22,594 INFO L608 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2018-11-18 09:56:22,594 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 09:56:22,594 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2018-11-18 09:56:22,594 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 09:56:22,594 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:56:22,594 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:56:22,595 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-18 09:56:22,595 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 09:56:22,595 INFO L794 eck$LassoCheckResult]: Stem: 108#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 101#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 102#L21-2 assume true; 109#L18-1 [2018-11-18 09:56:22,595 INFO L796 eck$LassoCheckResult]: Loop: 109#L18-1 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 103#L21 assume 0 != main_~tmp~0 % 256;main_#t~post4 := main_~x~0;main_~x~0 := 1 + main_#t~post4;havoc main_#t~post4; 104#L21-2 assume true; 109#L18-1 [2018-11-18 09:56:22,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:56:22,595 INFO L82 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2018-11-18 09:56:22,595 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:56:22,595 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:56:22,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:56:22,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:56:22,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:56:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:56:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:56:22,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:56:22,599 INFO L82 PathProgramCache]: Analyzing trace with hash 41794, now seen corresponding path program 1 times [2018-11-18 09:56:22,599 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:56:22,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:56:22,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:56:22,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:56:22,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:56:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:56:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:56:22,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:56:22,605 INFO L82 PathProgramCache]: Analyzing trace with hash 889541472, now seen corresponding path program 1 times [2018-11-18 09:56:22,605 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:56:22,606 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:56:22,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:56:22,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:56:22,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:56:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:56:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:56:22,637 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:56:22,638 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:56:22,638 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:56:22,638 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:56:22,638 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 09:56:22,638 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:56:22,638 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:56:22,638 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:56:22,638 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_false-unreach-call_true-termination.i_Iteration2_Loop [2018-11-18 09:56:22,638 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:56:22,639 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:56:22,640 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:22,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:22,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:22,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:22,709 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:56:22,710 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5ccee8ee-e8cd-48f6-a87f-fc42cfbf020f/bin-2019/uautomizer/z3 Starting monitored process 7 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:56:22,712 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:56:22,712 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:56:22,720 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:56:22,720 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~tmp~0=-192, ULTIMATE.start_main_#t~nondet3=-192} Honda state: {ULTIMATE.start_main_~tmp~0=-192, ULTIMATE.start_main_#t~nondet3=-192} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5ccee8ee-e8cd-48f6-a87f-fc42cfbf020f/bin-2019/uautomizer/z3 Starting monitored process 8 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:56:22,737 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:56:22,737 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:56:22,753 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:56:22,753 INFO L448 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 /tmp/vcloud-vcloud-master/worker/working_dir_5ccee8ee-e8cd-48f6-a87f-fc42cfbf020f/bin-2019/uautomizer/z3 Starting monitored process 9 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:56:22,757 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:56:22,758 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5ccee8ee-e8cd-48f6-a87f-fc42cfbf020f/bin-2019/uautomizer/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 [2018-11-18 09:56:22,783 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 09:56:22,783 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:56:22,799 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 09:56:22,800 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:56:22,800 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:56:22,800 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:56:22,800 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:56:22,800 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 09:56:22,800 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:56:22,800 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:56:22,801 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:56:22,801 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_false-unreach-call_true-termination.i_Iteration2_Loop [2018-11-18 09:56:22,801 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:56:22,801 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:56:22,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:22,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:22,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:22,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:22,885 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:56:22,885 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 09:56:22,886 INFO L122 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 [2018-11-18 09:56:22,886 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:56:22,887 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:56:22,887 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:56:22,887 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:56:22,887 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:56:22,887 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:56:22,888 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:56:22,889 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:56:22,890 INFO L122 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 [2018-11-18 09:56:22,890 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:56:22,890 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:56:22,890 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:56:22,891 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:56:22,891 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:56:22,891 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:56:22,891 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:56:22,894 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 09:56:22,897 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 09:56:22,897 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 09:56:22,897 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 09:56:22,897 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 09:56:22,898 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 09:56:22,898 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [2018-11-18 09:56:22,898 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 09:56:22,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:56:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:56:22,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:56:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:56:22,916 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:56:22,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:56:22,944 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-18 09:56:22,944 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-11-18 09:56:22,953 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 23 states and 28 transitions. Complement of second has 7 states. [2018-11-18 09:56:22,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 09:56:22,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 09:56:22,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2018-11-18 09:56:22,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-18 09:56:22,955 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:56:22,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-18 09:56:22,955 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:56:22,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-18 09:56:22,955 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:56:22,956 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 28 transitions. [2018-11-18 09:56:22,956 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 09:56:22,957 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 16 states and 20 transitions. [2018-11-18 09:56:22,957 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-11-18 09:56:22,957 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-11-18 09:56:22,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 20 transitions. [2018-11-18 09:56:22,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 09:56:22,957 INFO L705 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2018-11-18 09:56:22,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 20 transitions. [2018-11-18 09:56:22,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-18 09:56:22,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-18 09:56:22,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2018-11-18 09:56:22,959 INFO L728 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2018-11-18 09:56:22,959 INFO L608 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2018-11-18 09:56:22,959 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 09:56:22,959 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 20 transitions. [2018-11-18 09:56:22,960 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 09:56:22,960 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:56:22,960 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:56:22,960 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-11-18 09:56:22,960 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 09:56:22,960 INFO L794 eck$LassoCheckResult]: Stem: 183#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 177#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 178#L21-2 assume true; 187#L18-1 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 186#L21 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 189#L21-2 assume true; 184#L18-1 [2018-11-18 09:56:22,960 INFO L796 eck$LassoCheckResult]: Loop: 184#L18-1 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 179#L21 assume 0 != main_~tmp~0 % 256;main_#t~post4 := main_~x~0;main_~x~0 := 1 + main_#t~post4;havoc main_#t~post4; 180#L21-2 assume true; 184#L18-1 [2018-11-18 09:56:22,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:56:22,960 INFO L82 PathProgramCache]: Analyzing trace with hash 889541534, now seen corresponding path program 2 times [2018-11-18 09:56:22,960 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:56:22,961 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:56:22,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:56:22,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:56:22,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:56:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:56:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:56:22,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:56:22,968 INFO L82 PathProgramCache]: Analyzing trace with hash 41794, now seen corresponding path program 2 times [2018-11-18 09:56:22,968 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:56:22,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:56:22,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:56:22,969 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:56:22,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:56:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:56:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:56:22,974 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:56:22,974 INFO L82 PathProgramCache]: Analyzing trace with hash 383635077, now seen corresponding path program 1 times [2018-11-18 09:56:22,974 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:56:22,974 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:56:22,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:56:22,975 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:56:22,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:56:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:56:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:56:23,002 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:56:23,002 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:56:23,002 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:56:23,002 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:56:23,002 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 09:56:23,002 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:56:23,002 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:56:23,002 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:56:23,003 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_false-unreach-call_true-termination.i_Iteration3_Loop [2018-11-18 09:56:23,003 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:56:23,003 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:56:23,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:23,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:23,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:23,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:23,069 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:56:23,069 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5ccee8ee-e8cd-48f6-a87f-fc42cfbf020f/bin-2019/uautomizer/z3 Starting monitored process 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:56:23,071 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:56:23,071 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5ccee8ee-e8cd-48f6-a87f-fc42cfbf020f/bin-2019/uautomizer/z3 Starting monitored process 12 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:56:23,088 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 09:56:23,088 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:56:23,104 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 09:56:23,105 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:56:23,105 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:56:23,105 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:56:23,105 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:56:23,105 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 09:56:23,105 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:56:23,106 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:56:23,106 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:56:23,106 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_false-unreach-call_true-termination.i_Iteration3_Loop [2018-11-18 09:56:23,106 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:56:23,106 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:56:23,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:23,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:23,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:23,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:56:23,173 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:56:23,173 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 09:56:23,174 INFO L122 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 [2018-11-18 09:56:23,174 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:56:23,174 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:56:23,175 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:56:23,175 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:56:23,175 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:56:23,175 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:56:23,175 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:56:23,179 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 09:56:23,180 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 09:56:23,180 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 09:56:23,181 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 09:56:23,181 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 09:56:23,181 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 09:56:23,181 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [2018-11-18 09:56:23,181 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 09:56:23,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:56:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:56:23,198 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:56:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:56:23,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:56:23,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:56:23,218 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-18 09:56:23,218 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 20 transitions. cyclomatic complexity: 7 Second operand 4 states. [2018-11-18 09:56:23,227 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 20 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 20 states and 26 transitions. Complement of second has 7 states. [2018-11-18 09:56:23,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 09:56:23,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 09:56:23,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2018-11-18 09:56:23,228 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-18 09:56:23,229 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:56:23,229 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 09:56:23,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:56:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:56:23,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:56:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:56:23,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:56:23,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:56:23,265 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-18 09:56:23,265 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 20 transitions. cyclomatic complexity: 7 Second operand 4 states. [2018-11-18 09:56:23,282 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 20 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 19 states and 25 transitions. Complement of second has 7 states. [2018-11-18 09:56:23,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 09:56:23,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 09:56:23,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2018-11-18 09:56:23,283 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-18 09:56:23,283 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:56:23,283 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 09:56:23,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:56:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:56:23,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:56:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:56:23,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:56:23,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:56:23,308 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 3 loop predicates [2018-11-18 09:56:23,308 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 20 transitions. cyclomatic complexity: 7 Second operand 4 states. [2018-11-18 09:56:23,315 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 20 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 27 states and 34 transitions. Complement of second has 6 states. [2018-11-18 09:56:23,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 09:56:23,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 09:56:23,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-18 09:56:23,316 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-18 09:56:23,316 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:56:23,316 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-18 09:56:23,316 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:56:23,316 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 6 letters. [2018-11-18 09:56:23,316 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:56:23,317 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 34 transitions. [2018-11-18 09:56:23,318 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 09:56:23,318 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2018-11-18 09:56:23,318 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 09:56:23,318 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 09:56:23,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 09:56:23,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 09:56:23,318 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:56:23,318 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:56:23,318 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:56:23,318 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 09:56:23,318 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 09:56:23,318 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 09:56:23,318 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 09:56:23,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 09:56:23 BoogieIcfgContainer [2018-11-18 09:56:23,322 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 09:56:23,322 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 09:56:23,322 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 09:56:23,322 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 09:56:23,323 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:56:21" (3/4) ... [2018-11-18 09:56:23,325 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 09:56:23,325 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 09:56:23,325 INFO L168 Benchmark]: Toolchain (without parser) took 1807.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 959.2 MB in the beginning and 875.1 MB in the end (delta: 84.2 MB). Peak memory consumption was 232.0 MB. Max. memory is 11.5 GB. [2018-11-18 09:56:23,326 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:56:23,327 INFO L168 Benchmark]: CACSL2BoogieTranslator took 135.45 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:56:23,327 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.13 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:56:23,327 INFO L168 Benchmark]: Boogie Preprocessor took 10.85 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:56:23,328 INFO L168 Benchmark]: RCFGBuilder took 166.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -185.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:56:23,328 INFO L168 Benchmark]: BuchiAutomizer took 1471.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 875.1 MB in the end (delta: 256.1 MB). Peak memory consumption was 256.1 MB. Max. memory is 11.5 GB. [2018-11-18 09:56:23,328 INFO L168 Benchmark]: Witness Printer took 2.68 ms. Allocated memory is still 1.2 GB. Free memory is still 875.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:56:23,330 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 135.45 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 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 18.13 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.85 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 166.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -185.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1471.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 875.1 MB in the end (delta: 256.1 MB). Peak memory consumption was 256.1 MB. Max. memory is 11.5 GB. * Witness Printer took 2.68 ms. Allocated memory is still 1.2 GB. Free memory is still 875.1 MB. 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 3 terminating modules (0 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function z and consists of 5 locations. One deterministic module has affine ranking function -2 * x + 199 and consists of 4 locations. One nondeterministic module has affine ranking function -2 * x + 199 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 16 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 36 SDtfs, 35 SDslu, 28 SDs, 0 SdLazy, 38 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax100 hnf100 lsp46 ukn100 mio100 lsp100 div466 bol100 ite100 ukn100 eq148 hnf46 smp83 dnf100 smp100 tf106 neg97 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 6ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...