./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/Log.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec 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-restricted-15/Log.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 2d80b45a01c32727728c3a89e06c1e9a4dc4868b .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 14:10:39,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 14:10:39,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 14:10:39,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 14:10:39,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 14:10:39,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 14:10:39,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 14:10:39,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 14:10:39,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 14:10:39,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 14:10:39,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 14:10:39,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 14:10:39,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 14:10:39,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 14:10:39,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 14:10:39,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 14:10:39,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 14:10:39,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 14:10:39,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 14:10:39,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 14:10:39,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 14:10:39,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 14:10:39,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 14:10:39,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 14:10:39,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 14:10:39,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 14:10:39,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 14:10:39,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 14:10:39,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 14:10:39,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 14:10:39,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 14:10:39,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 14:10:39,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 14:10:39,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 14:10:39,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 14:10:39,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 14:10:39,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 14:10:39,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 14:10:39,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 14:10:39,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 14:10:39,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 14:10:39,483 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-08-27 14:10:39,510 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 14:10:39,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 14:10:39,511 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 14:10:39,512 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 14:10:39,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 14:10:39,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 14:10:39,513 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 14:10:39,513 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 14:10:39,513 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 14:10:39,514 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 14:10:39,514 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 14:10:39,514 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 14:10:39,514 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 14:10:39,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 14:10:39,515 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 14:10:39,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 14:10:39,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 14:10:39,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 14:10:39,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 14:10:39,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 14:10:39,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 14:10:39,516 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 14:10:39,516 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 14:10:39,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 14:10:39,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 14:10:39,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 14:10:39,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 14:10:39,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 14:10:39,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 14:10:39,518 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 14:10:39,518 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d80b45a01c32727728c3a89e06c1e9a4dc4868b [2021-08-27 14:10:39,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 14:10:39,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 14:10:39,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 14:10:39,761 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 14:10:39,762 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 14:10:39,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Log.c [2021-08-27 14:10:39,813 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/145012824/665dee04c2224824a5378f14992257d7/FLAGe58301ef6 [2021-08-27 14:10:40,136 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 14:10:40,136 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Log.c [2021-08-27 14:10:40,140 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/145012824/665dee04c2224824a5378f14992257d7/FLAGe58301ef6 [2021-08-27 14:10:40,580 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/145012824/665dee04c2224824a5378f14992257d7 [2021-08-27 14:10:40,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 14:10:40,583 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 14:10:40,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 14:10:40,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 14:10:40,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 14:10:40,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:10:40" (1/1) ... [2021-08-27 14:10:40,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e4820ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:40, skipping insertion in model container [2021-08-27 14:10:40,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:10:40" (1/1) ... [2021-08-27 14:10:40,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 14:10:40,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 14:10:40,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 14:10:40,674 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 14:10:40,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 14:10:40,693 INFO L208 MainTranslator]: Completed translation [2021-08-27 14:10:40,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:40 WrapperNode [2021-08-27 14:10:40,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 14:10:40,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 14:10:40,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 14:10:40,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 14:10:40,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:40" (1/1) ... [2021-08-27 14:10:40,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:40" (1/1) ... [2021-08-27 14:10:40,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 14:10:40,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 14:10:40,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 14:10:40,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 14:10:40,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:40" (1/1) ... [2021-08-27 14:10:40,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:40" (1/1) ... [2021-08-27 14:10:40,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:40" (1/1) ... [2021-08-27 14:10:40,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:40" (1/1) ... [2021-08-27 14:10:40,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:40" (1/1) ... [2021-08-27 14:10:40,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:40" (1/1) ... [2021-08-27 14:10:40,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:40" (1/1) ... [2021-08-27 14:10:40,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 14:10:40,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 14:10:40,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 14:10:40,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 14:10:40,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:40" (1/1) ... [2021-08-27 14:10:40,756 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:40,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:40,773 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) [2021-08-27 14:10:40,798 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 [2021-08-27 14:10:40,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 14:10:40,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 14:10:40,941 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 14:10:40,941 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-27 14:10:40,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:10:40 BoogieIcfgContainer [2021-08-27 14:10:40,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 14:10:40,943 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 14:10:40,943 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 14:10:40,945 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 14:10:40,946 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:10:40,946 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 02:10:40" (1/3) ... [2021-08-27 14:10:40,947 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@66cde69f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 02:10:40, skipping insertion in model container [2021-08-27 14:10:40,947 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:10:40,947 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:40" (2/3) ... [2021-08-27 14:10:40,947 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@66cde69f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 02:10:40, skipping insertion in model container [2021-08-27 14:10:40,947 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:10:40,947 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:10:40" (3/3) ... [2021-08-27 14:10:40,948 INFO L389 chiAutomizerObserver]: Analyzing ICFG Log.c [2021-08-27 14:10:40,987 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 14:10:40,987 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 14:10:40,987 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 14:10:40,988 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 14:10:40,988 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 14:10:40,988 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 14:10:40,988 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 14:10:40,988 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 14:10:40,996 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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) [2021-08-27 14:10:41,005 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 14:10:41,005 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:41,005 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:41,008 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-27 14:10:41,008 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 14:10:41,008 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 14:10:41,009 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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) [2021-08-27 14:10:41,009 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 14:10:41,009 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:41,009 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:41,010 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-27 14:10:41,010 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 14:10:41,013 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~xtmp~0, main_~res~0, main_~restmp~0;havoc main_~x~0;havoc main_~xtmp~0;havoc main_~res~0;havoc main_~restmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~res~0 := 0; 7#L13-2true [2021-08-27 14:10:41,014 INFO L793 eck$LassoCheckResult]: Loop: 7#L13-2true assume !!(main_~x~0 > 1);main_~xtmp~0 := main_~x~0;main_~restmp~0 := 0; 4#L17-2true assume !(main_~xtmp~0 > 1); 9#L17-3true main_~x~0 := main_~xtmp~0;main_~res~0 := 1 + main_~res~0; 7#L13-2true [2021-08-27 14:10:41,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:41,018 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-08-27 14:10:41,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:41,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028938238] [2021-08-27 14:10:41,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:41,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:41,063 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:41,073 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:41,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:41,075 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2021-08-27 14:10:41,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:41,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443419915] [2021-08-27 14:10:41,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:41,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:41,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:10:41,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:41,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443419915] [2021-08-27 14:10:41,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443419915] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 14:10:41,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 14:10:41,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 14:10:41,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939690378] [2021-08-27 14:10:41,125 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 14:10:41,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:10:41,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 14:10:41,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 14:10:41,150 INFO L87 Difference]: Start difference. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-08-27 14:10:41,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:10:41,184 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-08-27 14:10:41,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 14:10:41,186 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2021-08-27 14:10:41,187 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-08-27 14:10:41,189 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 5 states and 6 transitions. [2021-08-27 14:10:41,189 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-08-27 14:10:41,189 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-08-27 14:10:41,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 6 transitions. [2021-08-27 14:10:41,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 14:10:41,190 INFO L681 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2021-08-27 14:10:41,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 6 transitions. [2021-08-27 14:10:41,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2021-08-27 14:10:41,211 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) [2021-08-27 14:10:41,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2021-08-27 14:10:41,212 INFO L704 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2021-08-27 14:10:41,212 INFO L587 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2021-08-27 14:10:41,213 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 14:10:41,213 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 6 transitions. [2021-08-27 14:10:41,213 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-08-27 14:10:41,213 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:41,213 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:41,213 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-27 14:10:41,214 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-27 14:10:41,214 INFO L791 eck$LassoCheckResult]: Stem: 28#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~xtmp~0, main_~res~0, main_~restmp~0;havoc main_~x~0;havoc main_~xtmp~0;havoc main_~res~0;havoc main_~restmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~res~0 := 0; 29#L13-2 [2021-08-27 14:10:41,214 INFO L793 eck$LassoCheckResult]: Loop: 29#L13-2 assume !!(main_~x~0 > 1);main_~xtmp~0 := main_~x~0;main_~restmp~0 := 0; 26#L17-2 assume !!(main_~xtmp~0 > 1);main_~xtmp~0 := main_~xtmp~0 - 2;main_~restmp~0 := 1 + main_~restmp~0; 27#L17-2 assume !(main_~xtmp~0 > 1); 30#L17-3 main_~x~0 := main_~xtmp~0;main_~res~0 := 1 + main_~res~0; 29#L13-2 [2021-08-27 14:10:41,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:41,214 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-08-27 14:10:41,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:41,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311840031] [2021-08-27 14:10:41,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:41,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:41,228 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:41,231 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:41,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:41,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1240240, now seen corresponding path program 1 times [2021-08-27 14:10:41,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:41,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837872424] [2021-08-27 14:10:41,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:41,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:41,240 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:41,248 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:41,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:41,250 INFO L82 PathProgramCache]: Analyzing trace with hash 29869391, now seen corresponding path program 1 times [2021-08-27 14:10:41,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:41,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123911994] [2021-08-27 14:10:41,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:41,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:41,260 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:41,268 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:41,412 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:41,413 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:41,414 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:41,414 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:41,414 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:10:41,414 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:41,418 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:41,418 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:41,418 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration2_Loop [2021-08-27 14:10:41,418 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:41,418 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:41,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:41,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:41,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:41,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:41,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:41,541 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:41,542 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:10:41,543 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:41,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:41,544 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) [2021-08-27 14:10:41,545 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 [2021-08-27 14:10:41,547 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:41,547 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:41,563 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:41,563 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:41,581 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 [2021-08-27 14:10:41,581 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:41,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:41,584 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) [2021-08-27 14:10:41,584 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 [2021-08-27 14:10:41,585 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:41,585 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:41,602 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:41,602 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:41,619 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 [2021-08-27 14:10:41,620 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:41,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:41,621 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) [2021-08-27 14:10:41,621 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 [2021-08-27 14:10:41,623 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:41,623 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:41,641 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:41,641 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~restmp~0=1} Honda state: {ULTIMATE.start_main_~restmp~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:41,657 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 [2021-08-27 14:10:41,658 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:41,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:41,658 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) [2021-08-27 14:10:41,662 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 [2021-08-27 14:10:41,663 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:41,663 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:41,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:41,687 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:41,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:41,693 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) [2021-08-27 14:10:41,698 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 [2021-08-27 14:10:41,699 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:10:41,699 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:41,718 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:41,718 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~res~0=0} Honda state: {ULTIMATE.start_main_~res~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~res~0=-2}, {ULTIMATE.start_main_~res~0=6}, {ULTIMATE.start_main_~res~0=-3}] Lambdas: [4, 1, 1] Nus: [1, 0] [2021-08-27 14:10:41,733 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 [2021-08-27 14:10:41,734 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:41,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:41,734 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) [2021-08-27 14:10:41,735 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 [2021-08-27 14:10:41,736 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:41,736 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:41,766 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 [2021-08-27 14:10:41,767 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:41,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:41,768 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) [2021-08-27 14:10:41,768 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 [2021-08-27 14:10:41,770 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:10:41,770 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:41,954 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:10:41,958 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 [2021-08-27 14:10:41,958 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:41,958 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:41,958 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:41,958 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:41,958 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:10:41,958 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:41,959 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:41,959 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:41,959 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration2_Loop [2021-08-27 14:10:41,959 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:41,959 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:41,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:41,965 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:41,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:41,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:41,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:42,035 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:42,038 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:10:42,039 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:42,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:42,040 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) [2021-08-27 14:10:42,059 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 [2021-08-27 14:10:42,064 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 [2021-08-27 14:10:42,066 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:42,066 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:42,066 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:42,066 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:42,076 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:10:42,076 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:10:42,089 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:42,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:42,106 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:42,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:42,107 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) [2021-08-27 14:10:42,108 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 [2021-08-27 14:10:42,109 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 [2021-08-27 14:10:42,116 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:42,116 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:42,117 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:42,117 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:42,119 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:10:42,120 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:10:42,132 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:42,148 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 [2021-08-27 14:10:42,148 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:42,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:42,149 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) [2021-08-27 14:10:42,153 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 [2021-08-27 14:10:42,159 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:42,159 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:10:42,160 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:42,160 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:42,160 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:42,161 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:10:42,161 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:10:42,164 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 [2021-08-27 14:10:42,172 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:42,187 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 [2021-08-27 14:10:42,187 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:42,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:42,188 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) [2021-08-27 14:10:42,188 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 [2021-08-27 14:10:42,190 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 [2021-08-27 14:10:42,196 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:42,196 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:10:42,196 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:42,196 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:42,196 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:42,198 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:10:42,198 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:10:42,209 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:10:42,217 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 14:10:42,217 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-27 14:10:42,218 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:42,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:42,219 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) [2021-08-27 14:10:42,227 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:10:42,227 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:10:42,227 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:10:42,228 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-08-27 14:10:42,239 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 [2021-08-27 14:10:42,244 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 [2021-08-27 14:10:42,246 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:10:42,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:42,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:10:42,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:42,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 14:10:42,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:42,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 14:10:42,331 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 [2021-08-27 14:10:42,332 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), 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) [2021-08-27 14:10:42,372 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), 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) Result 9 states and 12 transitions. Complement of second has 6 states. [2021-08-27 14:10:42,373 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 [2021-08-27 14:10:42,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) 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) [2021-08-27 14:10:42,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2021-08-27 14:10:42,374 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 1 letters. Loop has 4 letters. [2021-08-27 14:10:42,375 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:42,375 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 5 letters. Loop has 4 letters. [2021-08-27 14:10:42,375 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:42,375 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 1 letters. Loop has 8 letters. [2021-08-27 14:10:42,375 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:42,375 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 12 transitions. [2021-08-27 14:10:42,376 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-08-27 14:10:42,376 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 11 transitions. [2021-08-27 14:10:42,376 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2021-08-27 14:10:42,376 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-08-27 14:10:42,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2021-08-27 14:10:42,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:42,376 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-08-27 14:10:42,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2021-08-27 14:10:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2021-08-27 14:10:42,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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) [2021-08-27 14:10:42,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2021-08-27 14:10:42,377 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-08-27 14:10:42,377 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-08-27 14:10:42,378 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 14:10:42,378 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2021-08-27 14:10:42,378 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-08-27 14:10:42,378 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:42,378 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:42,378 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-27 14:10:42,378 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-08-27 14:10:42,379 INFO L791 eck$LassoCheckResult]: Stem: 84#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~xtmp~0, main_~res~0, main_~restmp~0;havoc main_~x~0;havoc main_~xtmp~0;havoc main_~res~0;havoc main_~restmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~res~0 := 0; 85#L13-2 assume !!(main_~x~0 > 1);main_~xtmp~0 := main_~x~0;main_~restmp~0 := 0; 81#L17-2 [2021-08-27 14:10:42,379 INFO L793 eck$LassoCheckResult]: Loop: 81#L17-2 assume !!(main_~xtmp~0 > 1);main_~xtmp~0 := main_~xtmp~0 - 2;main_~restmp~0 := 1 + main_~restmp~0; 81#L17-2 [2021-08-27 14:10:42,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:42,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-08-27 14:10:42,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:42,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625886576] [2021-08-27 14:10:42,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:42,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:42,382 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:42,384 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:42,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:42,385 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2021-08-27 14:10:42,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:42,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228344656] [2021-08-27 14:10:42,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:42,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:42,388 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:42,389 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:42,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:42,390 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2021-08-27 14:10:42,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:42,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799177106] [2021-08-27 14:10:42,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:42,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:42,393 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:42,396 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:42,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:42,427 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:42,428 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:42,428 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:42,428 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:42,428 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:10:42,428 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:42,428 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:42,428 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:42,428 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration3_Loop [2021-08-27 14:10:42,428 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:42,428 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:42,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:42,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:42,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:42,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:42,466 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:42,466 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:10:42,466 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:42,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:42,467 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) [2021-08-27 14:10:42,470 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 [2021-08-27 14:10:42,474 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:42,474 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:42,490 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:42,490 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:42,507 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 [2021-08-27 14:10:42,507 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:42,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:42,508 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) [2021-08-27 14:10:42,513 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:42,513 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:42,522 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 [2021-08-27 14:10:42,544 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 [2021-08-27 14:10:42,544 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:42,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:42,545 INFO L229 MonitoredProcess]: Starting monitored process 16 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) [2021-08-27 14:10:42,559 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:10:42,559 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:42,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-08-27 14:10:42,589 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:42,590 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~restmp~0=0} Honda state: {ULTIMATE.start_main_~restmp~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~restmp~0=1}, {ULTIMATE.start_main_~restmp~0=-7}, {ULTIMATE.start_main_~restmp~0=7}] Lambdas: [8, 2, 1] Nus: [1, 1] [2021-08-27 14:10:42,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:42,609 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:42,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:42,609 INFO L229 MonitoredProcess]: Starting monitored process 17 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) [2021-08-27 14:10:42,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-08-27 14:10:42,611 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:42,611 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:42,632 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:42,633 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:42,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:42,648 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:42,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:42,648 INFO L229 MonitoredProcess]: Starting monitored process 18 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) [2021-08-27 14:10:42,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-08-27 14:10:42,650 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:42,650 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:42,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:42,685 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:42,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:42,686 INFO L229 MonitoredProcess]: Starting monitored process 19 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) [2021-08-27 14:10:42,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-08-27 14:10:42,687 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:10:42,687 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:42,722 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:10:42,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:42,725 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:42,725 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:42,725 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:42,725 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:42,725 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:10:42,725 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:42,725 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:42,725 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:42,726 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration3_Loop [2021-08-27 14:10:42,726 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:42,726 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:42,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:42,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:42,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:42,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:42,775 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:42,775 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:10:42,775 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:42,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:42,777 INFO L229 MonitoredProcess]: Starting monitored process 20 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) [2021-08-27 14:10:42,795 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 [2021-08-27 14:10:42,802 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:42,802 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:42,802 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:42,802 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:42,804 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:10:42,804 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:10:42,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-08-27 14:10:42,818 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:42,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:42,833 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:42,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:42,833 INFO L229 MonitoredProcess]: Starting monitored process 21 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) [2021-08-27 14:10:42,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-08-27 14:10:42,836 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 [2021-08-27 14:10:42,842 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:42,842 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:10:42,843 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:42,843 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:42,843 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:42,844 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:10:42,844 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:10:42,848 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:42,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2021-08-27 14:10:42,864 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:42,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:42,864 INFO L229 MonitoredProcess]: Starting monitored process 22 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) [2021-08-27 14:10:42,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-08-27 14:10:42,866 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 [2021-08-27 14:10:42,872 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:42,872 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:42,872 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:42,872 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:42,874 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:10:42,874 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:10:42,879 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:42,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:42,896 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:42,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:42,897 INFO L229 MonitoredProcess]: Starting monitored process 23 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) [2021-08-27 14:10:42,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-08-27 14:10:42,898 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 [2021-08-27 14:10:42,904 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:42,904 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:10:42,904 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:42,904 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:42,904 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:42,905 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:10:42,905 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:10:42,916 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:10:42,922 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 14:10:42,922 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-27 14:10:42,922 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:42,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:42,929 INFO L229 MonitoredProcess]: Starting monitored process 24 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) [2021-08-27 14:10:42,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-08-27 14:10:42,934 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:10:42,934 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:10:42,934 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:10:42,934 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2021-08-27 14:10:42,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:42,950 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:10:42,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:42,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:10:42,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:42,975 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:10:42,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:42,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:10:42,975 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-08-27 14:10:42,976 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-08-27 14:10:42,983 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 15 states and 20 transitions. Complement of second has 5 states. [2021-08-27 14:10:42,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-27 14:10:42,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-08-27 14:10:42,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-08-27 14:10:42,984 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2021-08-27 14:10:42,984 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:42,985 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2021-08-27 14:10:42,985 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:42,985 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2021-08-27 14:10:42,985 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:42,985 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 20 transitions. [2021-08-27 14:10:42,986 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-08-27 14:10:42,986 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 11 states and 15 transitions. [2021-08-27 14:10:42,986 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2021-08-27 14:10:42,986 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2021-08-27 14:10:42,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 15 transitions. [2021-08-27 14:10:42,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:42,986 INFO L681 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-08-27 14:10:42,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 15 transitions. [2021-08-27 14:10:42,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 7. [2021-08-27 14:10:42,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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) [2021-08-27 14:10:42,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2021-08-27 14:10:42,987 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2021-08-27 14:10:42,987 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2021-08-27 14:10:42,988 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 14:10:42,988 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2021-08-27 14:10:42,988 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-08-27 14:10:42,988 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:42,988 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:42,988 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2021-08-27 14:10:42,988 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-08-27 14:10:42,989 INFO L791 eck$LassoCheckResult]: Stem: 135#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~xtmp~0, main_~res~0, main_~restmp~0;havoc main_~x~0;havoc main_~xtmp~0;havoc main_~res~0;havoc main_~restmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~res~0 := 0; 136#L13-2 assume !!(main_~x~0 > 1);main_~xtmp~0 := main_~x~0;main_~restmp~0 := 0; 133#L17-2 assume !!(main_~xtmp~0 > 1);main_~xtmp~0 := main_~xtmp~0 - 2;main_~restmp~0 := 1 + main_~restmp~0; 134#L17-2 assume !(main_~xtmp~0 > 1); 138#L17-3 main_~x~0 := main_~xtmp~0;main_~res~0 := 1 + main_~res~0; 137#L13-2 assume !!(main_~x~0 > 1);main_~xtmp~0 := main_~x~0;main_~restmp~0 := 0; 132#L17-2 [2021-08-27 14:10:42,989 INFO L793 eck$LassoCheckResult]: Loop: 132#L17-2 assume !!(main_~xtmp~0 > 1);main_~xtmp~0 := main_~xtmp~0 - 2;main_~restmp~0 := 1 + main_~restmp~0; 132#L17-2 [2021-08-27 14:10:42,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:42,989 INFO L82 PathProgramCache]: Analyzing trace with hash 925951131, now seen corresponding path program 2 times [2021-08-27 14:10:42,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:42,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349773368] [2021-08-27 14:10:42,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:42,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:43,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 14:10:43,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:43,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349773368] [2021-08-27 14:10:43,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349773368] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 14:10:43,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 14:10:43,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 14:10:43,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5629043] [2021-08-27 14:10:43,007 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 14:10:43,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:43,007 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2021-08-27 14:10:43,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:43,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926625820] [2021-08-27 14:10:43,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:43,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:43,010 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:43,012 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:43,025 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:43,025 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:43,026 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:43,026 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:43,026 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:10:43,026 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:43,026 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:43,026 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:43,026 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration4_Loop [2021-08-27 14:10:43,026 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:43,026 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:43,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:43,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:43,033 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:43,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:43,063 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:43,064 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:10:43,064 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:43,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:43,069 INFO L229 MonitoredProcess]: Starting monitored process 25 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) [2021-08-27 14:10:43,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-08-27 14:10:43,071 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:43,071 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:43,101 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:43,101 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:43,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-08-27 14:10:43,116 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:43,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:43,117 INFO L229 MonitoredProcess]: Starting monitored process 26 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) [2021-08-27 14:10:43,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-08-27 14:10:43,118 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:43,118 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:43,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-08-27 14:10:43,140 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:43,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:43,140 INFO L229 MonitoredProcess]: Starting monitored process 27 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) [2021-08-27 14:10:43,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-08-27 14:10:43,142 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:10:43,142 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:43,171 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:10:43,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-08-27 14:10:43,174 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:43,174 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:43,174 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:43,174 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:43,174 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:10:43,174 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:43,174 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:43,174 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:43,174 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration4_Loop [2021-08-27 14:10:43,174 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:43,174 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:43,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:43,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:43,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:43,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:43,259 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:43,259 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:10:43,260 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:43,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:43,261 INFO L229 MonitoredProcess]: Starting monitored process 28 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) [2021-08-27 14:10:43,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:43,272 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 [2021-08-27 14:10:43,279 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:43,280 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:43,280 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:43,280 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:43,281 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:10:43,281 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:10:43,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-08-27 14:10:43,296 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:43,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:43,314 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:43,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:43,315 INFO L229 MonitoredProcess]: Starting monitored process 29 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) [2021-08-27 14:10:43,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-08-27 14:10:43,318 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 [2021-08-27 14:10:43,324 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:43,324 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:10:43,324 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:43,324 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:43,324 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:43,326 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:10:43,326 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:10:43,340 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:10:43,353 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-08-27 14:10:43,353 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 14:10:43,353 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:43,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:43,357 INFO L229 MonitoredProcess]: Starting monitored process 30 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) [2021-08-27 14:10:43,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-08-27 14:10:43,359 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:10:43,359 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:10:43,359 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:10:43,359 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2021-08-27 14:10:43,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:43,379 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:10:43,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:43,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:10:43,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:43,417 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:10:43,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:43,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:10:43,418 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-08-27 14:10:43,419 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-08-27 14:10:43,435 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 13 states and 17 transitions. Complement of second has 5 states. [2021-08-27 14:10:43,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-27 14:10:43,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-08-27 14:10:43,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-08-27 14:10:43,436 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2021-08-27 14:10:43,436 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:43,436 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-27 14:10:43,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:43,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:10:43,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:43,472 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:10:43,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:43,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:10:43,472 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2021-08-27 14:10:43,472 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-08-27 14:10:43,485 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 13 states and 17 transitions. Complement of second has 5 states. [2021-08-27 14:10:43,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-27 14:10:43,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-08-27 14:10:43,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-08-27 14:10:43,486 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2021-08-27 14:10:43,487 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:43,487 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-27 14:10:43,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:43,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:10:43,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:43,517 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:10:43,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:43,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:10:43,518 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 1 loop predicates [2021-08-27 14:10:43,518 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-08-27 14:10:43,526 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 10 states and 12 transitions. Complement of second has 4 states. [2021-08-27 14:10:43,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-27 14:10:43,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-08-27 14:10:43,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-08-27 14:10:43,527 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2021-08-27 14:10:43,528 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:43,528 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 1 letters. [2021-08-27 14:10:43,528 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:43,528 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2021-08-27 14:10:43,528 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:43,528 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2021-08-27 14:10:43,529 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 14:10:43,529 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2021-08-27 14:10:43,529 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 14:10:43,529 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 14:10:43,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 14:10:43,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 14:10:43,529 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:10:43,529 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:10:43,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:10:43,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 14:10:43,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 14:10:43,530 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 3 states have (on average 2.0) 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) [2021-08-27 14:10:43,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:10:43,530 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-08-27 14:10:43,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-27 14:10:43,530 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-08-27 14:10:43,530 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 14:10:43,531 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 14:10:43,531 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 14:10:43,531 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 14:10:43,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 14:10:43,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 14:10:43,531 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:10:43,531 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:10:43,531 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:10:43,531 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-08-27 14:10:43,531 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-27 14:10:43,531 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 14:10:43,532 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-27 14:10:43,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 02:10:43 BoogieIcfgContainer [2021-08-27 14:10:43,535 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 14:10:43,536 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 14:10:43,536 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 14:10:43,536 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 14:10:43,536 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:10:40" (3/4) ... [2021-08-27 14:10:43,538 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 14:10:43,538 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 14:10:43,539 INFO L168 Benchmark]: Toolchain (without parser) took 2955.49 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 43.7 MB in the beginning and 25.8 MB in the end (delta: 17.9 MB). Peak memory consumption was 37.6 MB. Max. memory is 16.1 GB. [2021-08-27 14:10:43,539 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 62.9 MB. Free memory was 43.6 MB in the beginning and 43.6 MB in the end (delta: 40.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:10:43,539 INFO L168 Benchmark]: CACSL2BoogieTranslator took 110.37 ms. Allocated memory is still 62.9 MB. Free memory was 43.5 MB in the beginning and 35.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-27 14:10:43,540 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.41 ms. Allocated memory is still 62.9 MB. Free memory was 35.0 MB in the beginning and 33.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:10:43,540 INFO L168 Benchmark]: Boogie Preprocessor took 32.28 ms. Allocated memory is still 62.9 MB. Free memory was 33.8 MB in the beginning and 46.5 MB in the end (delta: -12.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2021-08-27 14:10:43,540 INFO L168 Benchmark]: RCFGBuilder took 191.83 ms. Allocated memory is still 62.9 MB. Free memory was 46.5 MB in the beginning and 37.7 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 14:10:43,541 INFO L168 Benchmark]: BuchiAutomizer took 2592.14 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 37.7 MB in the beginning and 25.8 MB in the end (delta: 11.8 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.1 GB. [2021-08-27 14:10:43,541 INFO L168 Benchmark]: Witness Printer took 2.16 ms. Allocated memory is still 81.8 MB. Free memory is still 25.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:10:43,542 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 62.9 MB. Free memory was 43.6 MB in the beginning and 43.6 MB in the end (delta: 40.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 110.37 ms. Allocated memory is still 62.9 MB. Free memory was 43.5 MB in the beginning and 35.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 22.41 ms. Allocated memory is still 62.9 MB. Free memory was 35.0 MB in the beginning and 33.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.28 ms. Allocated memory is still 62.9 MB. Free memory was 33.8 MB in the beginning and 46.5 MB in the end (delta: -12.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 191.83 ms. Allocated memory is still 62.9 MB. Free memory was 46.5 MB in the beginning and 37.7 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2592.14 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 37.7 MB in the beginning and 25.8 MB in the end (delta: 11.8 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.1 GB. * Witness Printer took 2.16 ms. Allocated memory is still 81.8 MB. Free memory is still 25.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * 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 x and consists of 4 locations. One deterministic module has affine ranking function xtmp and consists of 3 locations. One nondeterministic module has affine ranking function xtmp and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.5s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 15.7ms AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 26 SDtfs, 20 SDslu, 6 SDs, 0 SdLazy, 35 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 40.2ms Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax170 hnf100 lsp39 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 50ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-08-27 14:10:43,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:43,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...