./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/terminator_02-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/loops/terminator_02-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 373a42d768821561cf3a59e950efa4caf2842fe4 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:49:24,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:49:24,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:49:24,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:49:24,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:49:24,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:49:24,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:49:24,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:49:24,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:49:24,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:49:24,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:49:24,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:49:24,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:49:24,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:49:24,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:49:24,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:49:24,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:49:24,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:49:24,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:49:24,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:49:24,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:49:24,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:49:24,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:49:24,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:49:24,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:49:24,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:49:24,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:49:24,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:49:24,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:49:24,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:49:24,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:49:24,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:49:24,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:49:24,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:49:24,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:49:24,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:49:24,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:49:24,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:49:24,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:49:24,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:49:24,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:49:24,235 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-28 20:49:24,275 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:49:24,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:49:24,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:49:24,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:49:24,281 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:49:24,281 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 20:49:24,281 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 20:49:24,281 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 20:49:24,282 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 20:49:24,282 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 20:49:24,282 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 20:49:24,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:49:24,282 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:49:24,283 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:49:24,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:49:24,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:49:24,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:49:24,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 20:49:24,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 20:49:24,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 20:49:24,285 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:49:24,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:49:24,286 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 20:49:24,286 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:49:24,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 20:49:24,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:49:24,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:49:24,287 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 20:49:24,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:49:24,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:49:24,288 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:49:24,288 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 20:49:24,290 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 20:49:24,290 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 373a42d768821561cf3a59e950efa4caf2842fe4 [2019-11-28 20:49:24,586 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:49:24,603 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:49:24,607 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:49:24,608 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:49:24,609 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:49:24,610 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/terminator_02-1.c [2019-11-28 20:49:24,670 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec9857031/ffe07ed867ad4026ae831443e01761d1/FLAG447711726 [2019-11-28 20:49:25,093 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:49:25,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/terminator_02-1.c [2019-11-28 20:49:25,098 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec9857031/ffe07ed867ad4026ae831443e01761d1/FLAG447711726 [2019-11-28 20:49:25,474 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec9857031/ffe07ed867ad4026ae831443e01761d1 [2019-11-28 20:49:25,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:49:25,479 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:49:25,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:49:25,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:49:25,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:49:25,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:49:25" (1/1) ... [2019-11-28 20:49:25,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c7f4e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:49:25, skipping insertion in model container [2019-11-28 20:49:25,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:49:25" (1/1) ... [2019-11-28 20:49:25,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:49:25,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:49:25,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:49:25,722 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:49:25,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:49:25,753 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:49:25,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:49:25 WrapperNode [2019-11-28 20:49:25,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:49:25,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:49:25,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:49:25,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:49:25,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:49:25" (1/1) ... [2019-11-28 20:49:25,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:49:25" (1/1) ... [2019-11-28 20:49:25,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:49:25,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:49:25,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:49:25,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:49:25,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:49:25" (1/1) ... [2019-11-28 20:49:25,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:49:25" (1/1) ... [2019-11-28 20:49:25,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:49:25" (1/1) ... [2019-11-28 20:49:25,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:49:25" (1/1) ... [2019-11-28 20:49:25,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:49:25" (1/1) ... [2019-11-28 20:49:25,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:49:25" (1/1) ... [2019-11-28 20:49:25,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:49:25" (1/1) ... [2019-11-28 20:49:25,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:49:25,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:49:25,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:49:25,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:49:25,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:49:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:49:25,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:49:26,087 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:49:26,088 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-28 20:49:26,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:49:26 BoogieIcfgContainer [2019-11-28 20:49:26,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:49:26,090 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 20:49:26,090 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 20:49:26,093 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 20:49:26,093 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:49:26,094 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 08:49:25" (1/3) ... [2019-11-28 20:49:26,094 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2b0622ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:49:26, skipping insertion in model container [2019-11-28 20:49:26,095 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:49:26,095 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:49:25" (2/3) ... [2019-11-28 20:49:26,095 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2b0622ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:49:26, skipping insertion in model container [2019-11-28 20:49:26,095 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:49:26,095 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:49:26" (3/3) ... [2019-11-28 20:49:26,097 INFO L371 chiAutomizerObserver]: Analyzing ICFG terminator_02-1.c [2019-11-28 20:49:26,171 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 20:49:26,172 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 20:49:26,172 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 20:49:26,172 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:49:26,172 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:49:26,172 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 20:49:26,173 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:49:26,173 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 20:49:26,191 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-28 20:49:26,219 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 20:49:26,219 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:49:26,220 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:49:26,226 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 20:49:26,226 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:49:26,227 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 20:49:26,227 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-28 20:49:26,228 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 20:49:26,228 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:49:26,228 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:49:26,229 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 20:49:26,229 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:49:26,241 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 10#L21-2true [2019-11-28 20:49:26,241 INFO L796 eck$LassoCheckResult]: Loop: 10#L21-2true assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 3#L21true assume 0 != main_~tmp~0 % 256;main_#t~post4 := main_~x~0;main_~x~0 := 1 + main_#t~post4;havoc main_#t~post4; 10#L21-2true [2019-11-28 20:49:26,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:26,247 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-28 20:49:26,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:49:26,256 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424105431] [2019-11-28 20:49:26,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:49:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:26,341 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:49:26,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:26,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-11-28 20:49:26,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:49:26,343 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092479464] [2019-11-28 20:49:26,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:49:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:26,367 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:49:26,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:26,369 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-11-28 20:49:26,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:49:26,370 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779860760] [2019-11-28 20:49:26,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:49:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:26,385 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:49:26,461 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:49:26,461 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:49:26,461 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:49:26,461 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:49:26,462 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:49:26,462 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:26,462 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:49:26,462 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:49:26,462 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration1_Loop [2019-11-28 20:49:26,462 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:49:26,463 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:49:26,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:26,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:26,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:26,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:26,666 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:49:26,667 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:26,676 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:49:26,677 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:49:26,686 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:49:26,687 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~z~0=101} Honda state: {ULTIMATE.start_main_~z~0=101} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:26,698 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:49:26,698 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:49:26,716 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:49:26,716 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~tmp~0=-217, ULTIMATE.start_main_#t~nondet3=-217} Honda state: {ULTIMATE.start_main_~tmp~0=-217, ULTIMATE.start_main_#t~nondet3=-217} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:49:26,732 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:49:26,732 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:26,757 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:49:26,757 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:49:26,767 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:49:26,770 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:49:26,770 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:49:26,770 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:49:26,770 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:49:26,771 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:49:26,771 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:26,771 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:49:26,771 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:49:26,771 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration1_Loop [2019-11-28 20:49:26,772 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:49:26,772 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:49:26,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:26,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:26,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:26,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:26,910 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:49:26,917 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:49:26,933 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:49:26,937 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:26,937 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:49:26,938 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:26,938 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:26,938 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:26,942 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:49:26,943 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:26,947 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:49:26,963 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:49:26,965 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:26,965 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:49:26,966 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:26,966 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:26,966 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:26,968 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:49:26,968 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:26,972 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:49:26,976 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:49:26,976 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:49:26,985 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:49:26,985 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:49:26,986 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:49:26,986 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:26,993 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 20:49:27,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:49:27,059 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:49:27,060 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:49:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:49:27,072 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:49:27,073 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:49:27,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:49:27,132 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 20:49:27,134 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2019-11-28 20:49:27,216 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 3 states. Result 35 states and 45 transitions. Complement of second has 8 states. [2019-11-28 20:49:27,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 20:49:27,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:49:27,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2019-11-28 20:49:27,222 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-28 20:49:27,223 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:49:27,223 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-28 20:49:27,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:49:27,225 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-28 20:49:27,225 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:49:27,226 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 45 transitions. [2019-11-28 20:49:27,235 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 20:49:27,239 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 7 states and 10 transitions. [2019-11-28 20:49:27,241 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-28 20:49:27,241 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-28 20:49:27,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-11-28 20:49:27,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:49:27,243 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-28 20:49:27,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-11-28 20:49:27,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-28 20:49:27,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-28 20:49:27,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-11-28 20:49:27,274 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-28 20:49:27,275 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-28 20:49:27,275 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 20:49:27,275 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-11-28 20:49:27,276 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 20:49:27,276 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:49:27,276 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:49:27,277 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 20:49:27,277 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:49:27,277 INFO L794 eck$LassoCheckResult]: Stem: 86#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 87#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 82#L21 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 83#L21-2 [2019-11-28 20:49:27,278 INFO L796 eck$LassoCheckResult]: Loop: 83#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 88#L21 assume 0 != main_~tmp~0 % 256;main_#t~post4 := main_~x~0;main_~x~0 := 1 + main_#t~post4;havoc main_#t~post4; 83#L21-2 [2019-11-28 20:49:27,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:27,278 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-11-28 20:49:27,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:49:27,279 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020155637] [2019-11-28 20:49:27,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:49:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:27,318 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:49:27,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:27,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2019-11-28 20:49:27,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:49:27,319 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142327563] [2019-11-28 20:49:27,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:49:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:27,340 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:49:27,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:27,341 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2019-11-28 20:49:27,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:49:27,344 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411340039] [2019-11-28 20:49:27,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:49:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:27,390 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:49:27,423 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:49:27,424 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:49:27,424 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:49:27,424 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:49:27,424 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:49:27,424 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:27,424 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:49:27,425 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:49:27,425 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration2_Loop [2019-11-28 20:49:27,425 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:49:27,425 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:49:27,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:27,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:27,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:27,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:27,546 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:49:27,547 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:27,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:49:27,558 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:49:27,573 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:49:27,573 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~tmp~0=128, ULTIMATE.start_main_#t~nondet3=128} Honda state: {ULTIMATE.start_main_~tmp~0=128, ULTIMATE.start_main_#t~nondet3=128} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:49:27,597 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:49:27,597 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:49:27,618 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:49:27,619 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:27,640 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:49:27,643 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:49:27,643 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:49:27,643 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:49:27,643 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:49:27,643 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:49:27,644 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:27,644 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:49:27,644 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:49:27,644 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration2_Loop [2019-11-28 20:49:27,644 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:49:27,644 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:49:27,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:27,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:27,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:27,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:27,762 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:49:27,762 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:49:27,772 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:49:27,774 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:27,775 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:49:27,775 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:27,775 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:27,775 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:27,777 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:49:27,777 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:27,780 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:49:27,783 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:49:27,783 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:49:27,789 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:49:27,789 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:49:27,789 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:49:27,789 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Exception during sending of exit command (exit): Broken pipe [2019-11-28 20:49:27,800 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:27,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:49:27,831 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:49:27,831 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:49:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:49:27,841 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:49:27,841 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:49:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:49:27,854 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 20:49:27,854 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-28 20:49:27,871 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 5 states. [2019-11-28 20:49:27,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:49:27,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:49:27,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-28 20:49:27,873 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-28 20:49:27,873 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:49:27,874 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-28 20:49:27,874 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:49:27,874 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2019-11-28 20:49:27,874 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:49:27,875 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2019-11-28 20:49:27,875 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 20:49:27,876 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2019-11-28 20:49:27,876 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-28 20:49:27,876 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-28 20:49:27,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2019-11-28 20:49:27,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:49:27,877 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-28 20:49:27,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2019-11-28 20:49:27,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-28 20:49:27,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-28 20:49:27,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2019-11-28 20:49:27,879 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-28 20:49:27,879 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-28 20:49:27,879 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 20:49:27,880 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2019-11-28 20:49:27,880 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 20:49:27,880 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:49:27,880 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:49:27,881 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2019-11-28 20:49:27,881 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:49:27,881 INFO L794 eck$LassoCheckResult]: Stem: 140#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 141#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 136#L21 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 137#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 144#L21 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 142#L21-2 [2019-11-28 20:49:27,881 INFO L796 eck$LassoCheckResult]: Loop: 142#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 143#L21 assume 0 != main_~tmp~0 % 256;main_#t~post4 := main_~x~0;main_~x~0 := 1 + main_#t~post4;havoc main_#t~post4; 142#L21-2 [2019-11-28 20:49:27,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:27,882 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 2 times [2019-11-28 20:49:27,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:49:27,882 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600591426] [2019-11-28 20:49:27,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:49:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:27,901 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:49:27,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:27,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2019-11-28 20:49:27,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:49:27,902 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631119454] [2019-11-28 20:49:27,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:49:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:27,910 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:49:27,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:27,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1364196307, now seen corresponding path program 2 times [2019-11-28 20:49:27,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:49:27,911 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661252067] [2019-11-28 20:49:27,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:49:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:27,932 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:49:27,960 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:49:27,960 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:49:27,960 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:49:27,960 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:49:27,961 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:49:27,961 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:27,961 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:49:27,961 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:49:27,961 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration3_Loop [2019-11-28 20:49:27,961 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:49:27,962 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:49:27,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:27,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:27,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:27,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:28,073 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:49:28,073 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:49:28,087 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:49:28,087 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:49:28,108 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:49:28,108 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:28,117 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:49:28,120 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:49:28,120 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:49:28,120 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:49:28,120 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:49:28,120 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:49:28,121 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:28,121 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:49:28,121 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:49:28,121 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration3_Loop [2019-11-28 20:49:28,121 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:49:28,121 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:49:28,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:28,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:28,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:28,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:28,215 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:49:28,215 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:28,223 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:49:28,224 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:28,224 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:49:28,224 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:28,225 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:28,225 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:28,226 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:49:28,226 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:49:28,228 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:49:28,231 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:49:28,231 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:49:28,238 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:28,238 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:49:28,239 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:49:28,239 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [2019-11-28 20:49:28,241 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 20:49:28,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:49:28,285 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:49:28,286 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:49:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:49:28,292 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:49:28,293 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:49:28,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:49:28,304 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 20:49:28,304 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-28 20:49:28,319 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2019-11-28 20:49:28,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:49:28,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:49:28,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-28 20:49:28,321 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-28 20:49:28,321 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:49:28,322 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 20:49:28,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:49:28,349 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:49:28,349 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:49:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:49:28,357 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:49:28,357 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:49:28,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:49:28,369 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 20:49:28,369 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-28 20:49:28,382 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2019-11-28 20:49:28,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:49:28,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:49:28,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-28 20:49:28,383 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-28 20:49:28,383 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:49:28,384 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 20:49:28,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:49:28,409 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:49:28,410 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:49:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:49:28,415 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:49:28,416 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:49:28,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:49:28,426 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 20:49:28,427 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-28 20:49:28,440 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 15 states and 23 transitions. Complement of second has 4 states. [2019-11-28 20:49:28,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:49:28,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:49:28,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-28 20:49:28,441 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-28 20:49:28,441 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:49:28,442 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 2 letters. [2019-11-28 20:49:28,442 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:49:28,442 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-28 20:49:28,442 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:49:28,443 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 23 transitions. [2019-11-28 20:49:28,444 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 20:49:28,445 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 19 transitions. [2019-11-28 20:49:28,445 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-28 20:49:28,445 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-28 20:49:28,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2019-11-28 20:49:28,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:49:28,446 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2019-11-28 20:49:28,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2019-11-28 20:49:28,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 5. [2019-11-28 20:49:28,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-28 20:49:28,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2019-11-28 20:49:28,448 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-11-28 20:49:28,448 INFO L591 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-11-28 20:49:28,448 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 20:49:28,449 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2019-11-28 20:49:28,449 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 20:49:28,449 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:49:28,450 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:49:28,450 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 20:49:28,450 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:49:28,450 INFO L794 eck$LassoCheckResult]: Stem: 287#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 284#L21-2 [2019-11-28 20:49:28,451 INFO L796 eck$LassoCheckResult]: Loop: 284#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 283#L21 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 284#L21-2 [2019-11-28 20:49:28,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:28,451 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-11-28 20:49:28,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:49:28,452 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018218454] [2019-11-28 20:49:28,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:49:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:28,457 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:49:28,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:28,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1286, now seen corresponding path program 1 times [2019-11-28 20:49:28,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:49:28,459 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505752418] [2019-11-28 20:49:28,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:49:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:28,467 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:49:28,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:28,468 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 3 times [2019-11-28 20:49:28,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:49:28,468 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781124972] [2019-11-28 20:49:28,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:49:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:28,479 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:49:28,512 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:49:28,512 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:49:28,513 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:49:28,513 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:49:28,513 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:49:28,514 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:28,514 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:49:28,515 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:49:28,515 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration4_Loop [2019-11-28 20:49:28,515 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:49:28,516 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:49:28,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:28,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:28,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:28,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:28,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:28,624 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:49:28,624 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:49:28,632 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:49:28,632 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:28,636 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:49:28,636 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:49:28,648 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:49:28,649 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:28,652 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:49:28,653 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:49:28,671 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:49:28,671 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:28,684 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:49:28,684 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~tmp~0=0, ULTIMATE.start_main_#t~nondet3=0} Honda state: {ULTIMATE.start_main_~tmp~0=0, ULTIMATE.start_main_#t~nondet3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:28,730 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:49:28,730 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:49:28,749 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:49:28,749 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:28,769 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:49:28,769 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=99} Honda state: {ULTIMATE.start_main_~x~0=99} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 4, 13] Nus: [1, 0] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:49:28,782 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:49:28,782 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:49:28,792 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:49:28,792 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:28,800 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:49:28,802 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:49:28,803 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:49:28,803 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:49:28,803 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:49:28,803 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:49:28,803 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:28,803 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:49:28,803 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:49:28,803 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration4_Loop [2019-11-28 20:49:28,803 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:49:28,804 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:49:28,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:28,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:28,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:28,816 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:28,823 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:49:28,901 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:49:28,901 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:49:28,909 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:49:28,912 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:28,912 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:49:28,912 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:28,912 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:28,912 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:28,914 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:49:28,914 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:49:28,917 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:49:28,925 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:49:28,927 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:28,927 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:49:28,927 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:28,927 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:28,928 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:28,929 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:49:28,929 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:28,931 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:49:28,941 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:49:28,942 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:28,943 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:49:28,943 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:28,943 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:28,943 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:28,945 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:49:28,945 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:28,948 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:49:28,958 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:49:28,960 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:28,960 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:49:28,960 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:28,960 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:28,960 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:28,962 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:49:28,963 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:28,965 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:49:28,972 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:49:28,974 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:28,974 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:49:28,974 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:28,974 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:28,974 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:28,975 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:49:28,975 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:28,978 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:49:28,985 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:49:28,985 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:49:28,992 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:49:28,992 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:49:28,992 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:49:28,993 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2019-11-28 20:49:28,995 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:29,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:49:29,016 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:49:29,017 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:49:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:49:29,021 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:49:29,021 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:49:29,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:49:29,032 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 20:49:29,032 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-28 20:49:29,047 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 11 states and 17 transitions. Complement of second has 4 states. [2019-11-28 20:49:29,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:49:29,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:49:29,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-28 20:49:29,049 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-28 20:49:29,049 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:49:29,049 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-28 20:49:29,049 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:49:29,050 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-28 20:49:29,050 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:49:29,050 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 17 transitions. [2019-11-28 20:49:29,051 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:49:29,051 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2019-11-28 20:49:29,051 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 20:49:29,052 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 20:49:29,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 20:49:29,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:49:29,052 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:49:29,052 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:49:29,052 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:49:29,052 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-28 20:49:29,052 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 20:49:29,053 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:49:29,055 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 20:49:29,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 08:49:29 BoogieIcfgContainer [2019-11-28 20:49:29,062 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 20:49:29,063 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:49:29,063 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:49:29,064 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:49:29,064 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:49:26" (3/4) ... [2019-11-28 20:49:29,068 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 20:49:29,068 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:49:29,071 INFO L168 Benchmark]: Toolchain (without parser) took 3590.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 212.9 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -169.5 MB). Peak memory consumption was 43.4 MB. Max. memory is 11.5 GB. [2019-11-28 20:49:29,072 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:49:29,073 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.95 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:49:29,073 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.30 ms. Allocated memory is still 1.0 GB. Free memory is still 945.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:49:29,074 INFO L168 Benchmark]: Boogie Preprocessor took 70.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -186.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 20:49:29,075 INFO L168 Benchmark]: RCFGBuilder took 236.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:49:29,076 INFO L168 Benchmark]: BuchiAutomizer took 2972.10 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 77.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -11.6 MB). Peak memory consumption was 66.0 MB. Max. memory is 11.5 GB. [2019-11-28 20:49:29,076 INFO L168 Benchmark]: Witness Printer took 4.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:49:29,085 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 273.95 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.30 ms. Allocated memory is still 1.0 GB. Free memory is still 945.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 70.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -186.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 236.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2972.10 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 77.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -11.6 MB). Peak memory consumption was 66.0 MB. Max. memory is 11.5 GB. * Witness Printer took 4.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -2 * x + 199 and consists of 5 locations. One deterministic module has affine ranking function -2 * x + 199 and consists of 3 locations. One deterministic module has affine ranking function z and consists of 3 locations. One nondeterministic module has affine ranking function -2 * x + 199 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 25 SDtfs, 21 SDslu, 13 SDs, 0 SdLazy, 41 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax100 hnf100 lsp47 ukn100 mio100 lsp100 div444 bol100 ite100 ukn100 eq150 hnf48 smp82 dnf100 smp100 tf106 neg97 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...