./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0f57a241e2c58801cabb7fcf6419a1ee8415c4d2687e9efe6a7f86e17b88f5ca --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 14:14:07,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 14:14:07,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 14:14:07,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 14:14:07,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 14:14:07,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 14:14:07,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 14:14:07,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 14:14:07,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 14:14:07,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 14:14:07,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 14:14:07,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 14:14:07,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 14:14:07,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 14:14:07,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 14:14:07,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 14:14:07,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 14:14:07,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 14:14:07,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 14:14:07,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 14:14:07,430 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 14:14:07,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 14:14:07,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 14:14:07,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 14:14:07,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 14:14:07,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 14:14:07,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 14:14:07,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 14:14:07,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 14:14:07,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 14:14:07,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 14:14:07,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 14:14:07,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 14:14:07,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 14:14:07,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 14:14:07,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 14:14:07,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 14:14:07,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 14:14:07,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 14:14:07,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 14:14:07,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 14:14:07,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 14:14:07,445 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-23 14:14:07,456 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 14:14:07,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 14:14:07,461 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 14:14:07,461 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 14:14:07,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 14:14:07,464 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 14:14:07,464 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 14:14:07,464 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-23 14:14:07,464 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-23 14:14:07,465 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-23 14:14:07,465 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-23 14:14:07,465 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-23 14:14:07,466 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-23 14:14:07,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 14:14:07,466 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 14:14:07,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 14:14:07,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 14:14:07,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-23 14:14:07,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-23 14:14:07,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-23 14:14:07,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 14:14:07,467 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-23 14:14:07,467 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 14:14:07,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-23 14:14:07,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 14:14:07,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 14:14:07,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 14:14:07,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 14:14:07,469 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-23 14:14:07,469 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f57a241e2c58801cabb7fcf6419a1ee8415c4d2687e9efe6a7f86e17b88f5ca [2022-07-23 14:14:07,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 14:14:07,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 14:14:07,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 14:14:07,617 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 14:14:07,618 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 14:14:07,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c [2022-07-23 14:14:07,651 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be2383deb/0e1a3734d6214fe6a544c58a08d70345/FLAGcce02ebde [2022-07-23 14:14:07,980 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 14:14:07,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c [2022-07-23 14:14:07,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be2383deb/0e1a3734d6214fe6a544c58a08d70345/FLAGcce02ebde [2022-07-23 14:14:08,002 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be2383deb/0e1a3734d6214fe6a544c58a08d70345 [2022-07-23 14:14:08,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 14:14:08,005 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 14:14:08,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 14:14:08,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 14:14:08,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 14:14:08,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:14:08" (1/1) ... [2022-07-23 14:14:08,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4637c078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:08, skipping insertion in model container [2022-07-23 14:14:08,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:14:08" (1/1) ... [2022-07-23 14:14:08,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 14:14:08,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 14:14:08,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:14:08,133 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 14:14:08,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:14:08,159 INFO L208 MainTranslator]: Completed translation [2022-07-23 14:14:08,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:08 WrapperNode [2022-07-23 14:14:08,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 14:14:08,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 14:14:08,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 14:14:08,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 14:14:08,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:08" (1/1) ... [2022-07-23 14:14:08,168 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:08" (1/1) ... [2022-07-23 14:14:08,177 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2022-07-23 14:14:08,178 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 14:14:08,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 14:14:08,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 14:14:08,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 14:14:08,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:08" (1/1) ... [2022-07-23 14:14:08,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:08" (1/1) ... [2022-07-23 14:14:08,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:08" (1/1) ... [2022-07-23 14:14:08,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:08" (1/1) ... [2022-07-23 14:14:08,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:08" (1/1) ... [2022-07-23 14:14:08,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:08" (1/1) ... [2022-07-23 14:14:08,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:08" (1/1) ... [2022-07-23 14:14:08,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 14:14:08,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 14:14:08,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 14:14:08,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 14:14:08,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:08" (1/1) ... [2022-07-23 14:14:08,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:08,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:08,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:08,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-23 14:14:08,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 14:14:08,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 14:14:08,315 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 14:14:08,316 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 14:14:08,374 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 14:14:08,378 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 14:14:08,378 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-23 14:14:08,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:14:08 BoogieIcfgContainer [2022-07-23 14:14:08,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 14:14:08,380 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-23 14:14:08,380 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-23 14:14:08,382 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-23 14:14:08,383 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:14:08,383 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.07 02:14:08" (1/3) ... [2022-07-23 14:14:08,384 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@66795f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:14:08, skipping insertion in model container [2022-07-23 14:14:08,384 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:14:08,384 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:08" (2/3) ... [2022-07-23 14:14:08,384 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@66795f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:14:08, skipping insertion in model container [2022-07-23 14:14:08,384 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:14:08,385 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:14:08" (3/3) ... [2022-07-23 14:14:08,385 INFO L354 chiAutomizerObserver]: Analyzing ICFG KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c [2022-07-23 14:14:08,419 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-23 14:14:08,419 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-23 14:14:08,419 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-23 14:14:08,419 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-23 14:14:08,419 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-23 14:14:08,419 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-23 14:14:08,420 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-23 14:14:08,420 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-23 14:14:08,422 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:08,432 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-23 14:14:08,433 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:14:08,433 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:14:08,436 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 14:14:08,436 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 14:14:08,436 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-23 14:14:08,437 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:08,437 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-23 14:14:08,437 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:14:08,438 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:14:08,438 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 14:14:08,438 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 14:14:08,442 INFO L752 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~post1#1, main_~x~0#1, main_~debug~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~debug~0#1 := 0; 9#L23-1true [2022-07-23 14:14:08,442 INFO L754 eck$LassoCheckResult]: Loop: 9#L23-1true assume !!(main_~x~0#1 < 255); 4#L18true assume !(0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2));main_~x~0#1 := 2 + main_~x~0#1; 7#L18-2true assume 0 != main_~debug~0#1;main_~x~0#1 := 0; 9#L23-1true [2022-07-23 14:14:08,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:08,446 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-23 14:14:08,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:08,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137654194] [2022-07-23 14:14:08,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:08,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:08,496 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:08,507 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:08,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:08,509 INFO L85 PathProgramCache]: Analyzing trace with hash 40878, now seen corresponding path program 1 times [2022-07-23 14:14:08,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:08,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538238007] [2022-07-23 14:14:08,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:08,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:08,524 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:08,530 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:08,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:08,532 INFO L85 PathProgramCache]: Analyzing trace with hash 28699820, now seen corresponding path program 1 times [2022-07-23 14:14:08,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:08,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516331068] [2022-07-23 14:14:08,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:08,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:08,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:14:08,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 14:14:08,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516331068] [2022-07-23 14:14:08,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516331068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 14:14:08,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 14:14:08,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 14:14:08,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892940005] [2022-07-23 14:14:08,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 14:14:08,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 14:14:08,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 14:14:08,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 14:14:08,647 INFO L87 Difference]: Start difference. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:08,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 14:14:08,653 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2022-07-23 14:14:08,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 14:14:08,657 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2022-07-23 14:14:08,658 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-23 14:14:08,659 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 5 states and 6 transitions. [2022-07-23 14:14:08,660 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-07-23 14:14:08,660 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2022-07-23 14:14:08,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 6 transitions. [2022-07-23 14:14:08,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-23 14:14:08,661 INFO L369 hiAutomatonCegarLoop]: Abstraction has 5 states and 6 transitions. [2022-07-23 14:14:08,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 6 transitions. [2022-07-23 14:14:08,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2022-07-23 14:14:08,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:08,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2022-07-23 14:14:08,679 INFO L392 hiAutomatonCegarLoop]: Abstraction has 5 states and 6 transitions. [2022-07-23 14:14:08,679 INFO L374 stractBuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2022-07-23 14:14:08,679 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-23 14:14:08,679 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 6 transitions. [2022-07-23 14:14:08,680 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-23 14:14:08,680 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:14:08,680 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:14:08,680 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 14:14:08,680 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 14:14:08,680 INFO L752 eck$LassoCheckResult]: Stem: 31#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 32#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~post1#1, main_~x~0#1, main_~debug~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~debug~0#1 := 0; 33#L23-1 [2022-07-23 14:14:08,681 INFO L754 eck$LassoCheckResult]: Loop: 33#L23-1 assume !!(main_~x~0#1 < 255); 29#L18 assume !(0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2));main_~x~0#1 := 2 + main_~x~0#1; 30#L18-2 assume !(0 != main_~debug~0#1); 33#L23-1 [2022-07-23 14:14:08,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:08,681 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2022-07-23 14:14:08,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:08,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942700516] [2022-07-23 14:14:08,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:08,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:08,685 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:08,687 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:08,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:08,687 INFO L85 PathProgramCache]: Analyzing trace with hash 40880, now seen corresponding path program 1 times [2022-07-23 14:14:08,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:08,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602145856] [2022-07-23 14:14:08,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:08,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:08,695 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:08,700 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:08,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:08,700 INFO L85 PathProgramCache]: Analyzing trace with hash 28699822, now seen corresponding path program 1 times [2022-07-23 14:14:08,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:08,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677727831] [2022-07-23 14:14:08,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:08,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:08,707 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:08,713 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:08,744 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:14:08,745 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:14:08,745 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:14:08,745 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:14:08,745 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:14:08,745 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:08,745 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:14:08,746 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:14:08,746 INFO L133 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c_Iteration2_Loop [2022-07-23 14:14:08,746 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:14:08,746 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:14:08,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:08,764 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:08,872 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:14:08,873 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:14:08,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:08,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:08,876 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:08,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-07-23 14:14:08,878 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:08,878 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:08,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:08,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:08,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:08,928 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:08,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-07-23 14:14:08,930 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:14:08,930 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:08,962 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:14:08,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:08,968 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:14:08,968 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:14:08,968 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:14:08,968 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:14:08,968 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:14:08,968 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:08,968 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:14:08,968 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:14:08,968 INFO L133 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c_Iteration2_Loop [2022-07-23 14:14:08,968 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:14:08,968 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:14:08,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:08,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:09,044 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:14:09,048 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:14:09,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:09,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:09,050 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:09,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-07-23 14:14:09,052 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:14:09,059 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:09,059 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:09,059 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:09,059 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:09,059 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:09,062 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:14:09,062 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:09,065 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:14:09,069 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:14:09,069 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:14:09,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:09,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:09,078 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:09,116 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:14:09,116 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:14:09,116 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:14:09,117 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 + 255 Supporting invariants [] [2022-07-23 14:14:09,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-07-23 14:14:09,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:09,135 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:14:09,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:09,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:14:09,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:09,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:14:09,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:09,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:14:09,204 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-07-23 14:14:09,204 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 6 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:09,223 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 6 transitions. cyclomatic complexity: 2. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 15 transitions. Complement of second has 7 states. [2022-07-23 14:14:09,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-23 14:14:09,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:09,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2022-07-23 14:14:09,225 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 3 letters. [2022-07-23 14:14:09,226 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:09,226 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 5 letters. Loop has 3 letters. [2022-07-23 14:14:09,226 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:09,226 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 6 letters. [2022-07-23 14:14:09,226 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:09,226 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 15 transitions. [2022-07-23 14:14:09,227 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-23 14:14:09,228 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 15 transitions. [2022-07-23 14:14:09,228 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-07-23 14:14:09,228 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2022-07-23 14:14:09,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2022-07-23 14:14:09,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:14:09,229 INFO L369 hiAutomatonCegarLoop]: Abstraction has 12 states and 15 transitions. [2022-07-23 14:14:09,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2022-07-23 14:14:09,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2022-07-23 14:14:09,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:09,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2022-07-23 14:14:09,230 INFO L392 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2022-07-23 14:14:09,231 INFO L374 stractBuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2022-07-23 14:14:09,231 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-23 14:14:09,231 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2022-07-23 14:14:09,231 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-23 14:14:09,231 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:14:09,231 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:14:09,232 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-23 14:14:09,232 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 14:14:09,232 INFO L752 eck$LassoCheckResult]: Stem: 90#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 91#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~post1#1, main_~x~0#1, main_~debug~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~debug~0#1 := 0; 95#L23-1 assume !!(main_~x~0#1 < 255); 86#L18 assume 0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2);main_#t~post1#1 := main_~x~0#1;main_~x~0#1 := main_#t~post1#1 - 1;havoc main_#t~post1#1; 87#L18-2 [2022-07-23 14:14:09,232 INFO L754 eck$LassoCheckResult]: Loop: 87#L18-2 assume !(0 != main_~debug~0#1); 92#L23-1 assume !!(main_~x~0#1 < 255); 96#L18 assume !(0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2));main_~x~0#1 := 2 + main_~x~0#1; 87#L18-2 [2022-07-23 14:14:09,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:09,233 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-07-23 14:14:09,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:09,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588390974] [2022-07-23 14:14:09,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:09,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:09,241 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:09,246 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:09,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:09,246 INFO L85 PathProgramCache]: Analyzing trace with hash 51290, now seen corresponding path program 2 times [2022-07-23 14:14:09,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:09,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893581644] [2022-07-23 14:14:09,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:09,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:09,252 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:09,263 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:09,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:09,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1810665941, now seen corresponding path program 1 times [2022-07-23 14:14:09,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:09,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052797766] [2022-07-23 14:14:09,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:09,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:09,271 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:09,278 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:09,295 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:14:09,296 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:14:09,296 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:14:09,296 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:14:09,296 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:14:09,296 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:09,296 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:14:09,296 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:14:09,296 INFO L133 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c_Iteration3_Loop [2022-07-23 14:14:09,296 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:14:09,296 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:14:09,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:09,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:09,343 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:14:09,344 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:14:09,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:09,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:09,360 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:09,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-07-23 14:14:09,373 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:09,373 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:09,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:09,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:09,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:09,411 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:09,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-07-23 14:14:09,413 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:14:09,413 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:09,459 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:14:09,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:09,463 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:14:09,463 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:14:09,463 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:14:09,463 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:14:09,463 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:14:09,463 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:09,463 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:14:09,463 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:14:09,463 INFO L133 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c_Iteration3_Loop [2022-07-23 14:14:09,464 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:14:09,464 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:14:09,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:09,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:09,519 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:14:09,519 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:14:09,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:09,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:09,520 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:09,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-07-23 14:14:09,564 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:14:09,570 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:09,570 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:09,571 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:09,571 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:09,571 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:09,572 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:14:09,572 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:09,583 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:14:09,585 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:14:09,585 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:14:09,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:09,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:09,587 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:09,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-07-23 14:14:09,617 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:14:09,617 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:14:09,617 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:14:09,617 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 + 255 Supporting invariants [] [2022-07-23 14:14:09,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:09,651 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:14:09,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:09,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:14:09,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:09,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:14:09,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:09,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:14:09,708 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 [2022-07-23 14:14:09,708 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:09,721 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 17 states and 22 transitions. Complement of second has 7 states. [2022-07-23 14:14:09,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-23 14:14:09,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:09,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2022-07-23 14:14:09,723 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2022-07-23 14:14:09,723 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:09,724 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-23 14:14:09,724 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:09,724 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 4 letters. Loop has 6 letters. [2022-07-23 14:14:09,724 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:09,724 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 22 transitions. [2022-07-23 14:14:09,725 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-23 14:14:09,725 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 22 transitions. [2022-07-23 14:14:09,725 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2022-07-23 14:14:09,726 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2022-07-23 14:14:09,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2022-07-23 14:14:09,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:14:09,726 INFO L369 hiAutomatonCegarLoop]: Abstraction has 17 states and 22 transitions. [2022-07-23 14:14:09,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2022-07-23 14:14:09,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-07-23 14:14:09,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:09,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2022-07-23 14:14:09,728 INFO L392 hiAutomatonCegarLoop]: Abstraction has 17 states and 22 transitions. [2022-07-23 14:14:09,728 INFO L374 stractBuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2022-07-23 14:14:09,728 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-23 14:14:09,728 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 22 transitions. [2022-07-23 14:14:09,729 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-23 14:14:09,729 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:14:09,729 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:14:09,729 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2022-07-23 14:14:09,729 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 14:14:09,729 INFO L752 eck$LassoCheckResult]: Stem: 163#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 164#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~post1#1, main_~x~0#1, main_~debug~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~debug~0#1 := 0; 169#L23-1 assume !!(main_~x~0#1 < 255); 173#L18 assume 0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2);main_#t~post1#1 := main_~x~0#1;main_~x~0#1 := main_#t~post1#1 - 1;havoc main_#t~post1#1; 165#L18-2 assume !(0 != main_~debug~0#1); 166#L23-1 assume !!(main_~x~0#1 < 255); 159#L18 assume 0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2);main_#t~post1#1 := main_~x~0#1;main_~x~0#1 := main_#t~post1#1 - 1;havoc main_#t~post1#1; 160#L18-2 [2022-07-23 14:14:09,729 INFO L754 eck$LassoCheckResult]: Loop: 160#L18-2 assume !(0 != main_~debug~0#1); 172#L23-1 assume !!(main_~x~0#1 < 255); 171#L18 assume !(0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2));main_~x~0#1 := 2 + main_~x~0#1; 160#L18-2 [2022-07-23 14:14:09,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:09,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1810665939, now seen corresponding path program 1 times [2022-07-23 14:14:09,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:09,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245441957] [2022-07-23 14:14:09,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:09,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:09,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:14:09,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 14:14:09,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245441957] [2022-07-23 14:14:09,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245441957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 14:14:09,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 14:14:09,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 14:14:09,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206734513] [2022-07-23 14:14:09,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 14:14:09,759 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-23 14:14:09,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:09,759 INFO L85 PathProgramCache]: Analyzing trace with hash 51290, now seen corresponding path program 3 times [2022-07-23 14:14:09,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:09,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229026377] [2022-07-23 14:14:09,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:09,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:09,763 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:09,766 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:09,782 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:14:09,782 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:14:09,782 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:14:09,782 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:14:09,782 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:14:09,782 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:09,782 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:14:09,782 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:14:09,783 INFO L133 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c_Iteration4_Loop [2022-07-23 14:14:09,783 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:14:09,783 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:14:09,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:09,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:09,832 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:14:09,832 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:14:09,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:09,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:09,834 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:09,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-07-23 14:14:09,836 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:09,836 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:09,864 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:14:09,864 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~debug~0#1=0} Honda state: {ULTIMATE.start_main_~debug~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:14:09,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:09,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:09,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:09,883 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:09,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-07-23 14:14:09,898 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:09,899 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:09,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:09,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:09,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:09,927 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:09,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-07-23 14:14:09,929 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:14:09,929 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:09,960 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:14:09,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:09,965 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:14:09,965 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:14:09,965 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:14:09,965 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:14:09,966 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:14:09,966 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:09,966 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:14:09,966 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:14:09,966 INFO L133 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c_Iteration4_Loop [2022-07-23 14:14:09,966 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:14:09,966 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:14:09,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:09,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:10,030 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:14:10,031 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:14:10,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:10,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:10,049 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:10,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-07-23 14:14:10,051 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:14:10,056 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:10,056 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:10,057 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:10,057 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:10,057 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:10,057 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:14:10,057 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:10,081 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:10,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2022-07-23 14:14:10,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:10,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:10,118 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:10,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-07-23 14:14:10,122 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:14:10,128 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:10,128 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:10,128 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:10,128 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:10,128 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:10,130 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:14:10,130 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:10,151 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:14:10,153 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:14:10,153 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:14:10,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:10,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:10,155 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:10,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-07-23 14:14:10,157 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:14:10,157 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:14:10,157 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:14:10,157 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 + 255 Supporting invariants [] [2022-07-23 14:14:10,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:10,174 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:14:10,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:10,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:14:10,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:10,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:14:10,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:10,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:14:10,252 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 [2022-07-23 14:14:10,252 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:10,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-07-23 14:14:10,276 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 28 transitions. Complement of second has 7 states. [2022-07-23 14:14:10,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-23 14:14:10,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:10,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2022-07-23 14:14:10,277 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-23 14:14:10,277 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:10,277 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-23 14:14:10,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-07-23 14:14:10,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:10,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:14:10,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:10,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:14:10,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:10,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:10,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:14:10,321 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 [2022-07-23 14:14:10,321 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:10,327 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 28 transitions. Complement of second has 7 states. [2022-07-23 14:14:10,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-23 14:14:10,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:10,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2022-07-23 14:14:10,328 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-23 14:14:10,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:10,328 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-23 14:14:10,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:10,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:14:10,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:10,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:14:10,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:10,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:14:10,357 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 [2022-07-23 14:14:10,358 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:10,374 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 32 transitions. Complement of second has 6 states. [2022-07-23 14:14:10,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-23 14:14:10,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:10,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2022-07-23 14:14:10,376 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-23 14:14:10,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:10,376 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 10 letters. Loop has 3 letters. [2022-07-23 14:14:10,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:10,376 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 7 letters. Loop has 6 letters. [2022-07-23 14:14:10,377 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:10,377 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 32 transitions. [2022-07-23 14:14:10,381 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-07-23 14:14:10,381 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 20 states and 26 transitions. [2022-07-23 14:14:10,382 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-07-23 14:14:10,382 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2022-07-23 14:14:10,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2022-07-23 14:14:10,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:14:10,382 INFO L369 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-07-23 14:14:10,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2022-07-23 14:14:10,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 9. [2022-07-23 14:14:10,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:10,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2022-07-23 14:14:10,383 INFO L392 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2022-07-23 14:14:10,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 14:14:10,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 14:14:10,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 14:14:10,383 INFO L87 Difference]: Start difference. First operand 9 states and 12 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:10,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 14:14:10,392 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2022-07-23 14:14:10,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 14:14:10,392 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2022-07-23 14:14:10,393 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-23 14:14:10,393 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2022-07-23 14:14:10,393 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-23 14:14:10,393 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-23 14:14:10,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-23 14:14:10,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-23 14:14:10,393 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:14:10,393 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:14:10,393 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:14:10,393 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-23 14:14:10,393 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-23 14:14:10,393 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-23 14:14:10,393 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-23 14:14:10,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.07 02:14:10 BoogieIcfgContainer [2022-07-23 14:14:10,398 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-23 14:14:10,398 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-23 14:14:10,398 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-23 14:14:10,398 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-23 14:14:10,398 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:14:08" (3/4) ... [2022-07-23 14:14:10,400 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-23 14:14:10,400 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-23 14:14:10,401 INFO L158 Benchmark]: Toolchain (without parser) took 2395.55ms. Allocated memory was 100.7MB in the beginning and 142.6MB in the end (delta: 41.9MB). Free memory was 78.4MB in the beginning and 102.3MB in the end (delta: -23.9MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. [2022-07-23 14:14:10,401 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 100.7MB. Free memory is still 57.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:14:10,401 INFO L158 Benchmark]: CACSL2BoogieTranslator took 153.70ms. Allocated memory was 100.7MB in the beginning and 142.6MB in the end (delta: 41.9MB). Free memory was 78.1MB in the beginning and 118.6MB in the end (delta: -40.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 14:14:10,401 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.66ms. Allocated memory is still 142.6MB. Free memory was 118.6MB in the beginning and 117.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:14:10,402 INFO L158 Benchmark]: Boogie Preprocessor took 13.40ms. Allocated memory is still 142.6MB. Free memory was 117.2MB in the beginning and 116.5MB in the end (delta: 716.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 14:14:10,402 INFO L158 Benchmark]: RCFGBuilder took 186.81ms. Allocated memory is still 142.6MB. Free memory was 116.5MB in the beginning and 108.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 14:14:10,402 INFO L158 Benchmark]: BuchiAutomizer took 2017.59ms. Allocated memory is still 142.6MB. Free memory was 108.1MB in the beginning and 102.3MB in the end (delta: 5.8MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2022-07-23 14:14:10,402 INFO L158 Benchmark]: Witness Printer took 2.03ms. Allocated memory is still 142.6MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:14:10,404 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 100.7MB. Free memory is still 57.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 153.70ms. Allocated memory was 100.7MB in the beginning and 142.6MB in the end (delta: 41.9MB). Free memory was 78.1MB in the beginning and 118.6MB in the end (delta: -40.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.66ms. Allocated memory is still 142.6MB. Free memory was 118.6MB in the beginning and 117.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.40ms. Allocated memory is still 142.6MB. Free memory was 117.2MB in the beginning and 116.5MB in the end (delta: 716.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 186.81ms. Allocated memory is still 142.6MB. Free memory was 116.5MB in the beginning and 108.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2017.59ms. Allocated memory is still 142.6MB. Free memory was 108.1MB in the beginning and 102.3MB in the end (delta: 5.8MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Witness Printer took 2.03ms. Allocated memory is still 142.6MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 255 + -1 * x and consists of 4 locations. One deterministic module has affine ranking function 255 + -1 * x and consists of 4 locations. One nondeterministic module has affine ranking function 255 + -1 * x and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.9s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 38 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33 IncrementalHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 46 mSDtfsCounter, 33 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc1 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp83 ukn100 mio100 lsp100 div346 bol100 ite100 ukn100 eq150 hnf94 smp47 dnf100 smp100 tf105 neg100 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 67ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-07-23 14:14:10,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE