./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/Lobnya-Boolean-Reordered-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted/Lobnya-Boolean-Reordered-2.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 70e9192ed98be1c98a98d704655daf2c23fe89411c7a078d7ff71796ac189400 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 22:57:27,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 22:57:27,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 22:57:27,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 22:57:27,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 22:57:27,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 22:57:27,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 22:57:27,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 22:57:27,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 22:57:27,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 22:57:27,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 22:57:27,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 22:57:27,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 22:57:27,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 22:57:27,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 22:57:27,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 22:57:27,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 22:57:27,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 22:57:27,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 22:57:27,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 22:57:27,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 22:57:27,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 22:57:27,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 22:57:27,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 22:57:27,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 22:57:27,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 22:57:27,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 22:57:27,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 22:57:27,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 22:57:27,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 22:57:27,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 22:57:27,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 22:57:27,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 22:57:27,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 22:57:27,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 22:57:27,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 22:57:27,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 22:57:27,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 22:57:27,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 22:57:27,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 22:57:27,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 22:57:27,620 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-14 22:57:27,646 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 22:57:27,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 22:57:27,647 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 22:57:27,647 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 22:57:27,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 22:57:27,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 22:57:27,649 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 22:57:27,649 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-14 22:57:27,649 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-14 22:57:27,649 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-14 22:57:27,650 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-14 22:57:27,650 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-14 22:57:27,650 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-14 22:57:27,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 22:57:27,651 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 22:57:27,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 22:57:27,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 22:57:27,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-14 22:57:27,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-14 22:57:27,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-14 22:57:27,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 22:57:27,652 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-14 22:57:27,652 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 22:57:27,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-14 22:57:27,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 22:57:27,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 22:57:27,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 22:57:27,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 22:57:27,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 22:57:27,654 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-14 22:57:27,654 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70e9192ed98be1c98a98d704655daf2c23fe89411c7a078d7ff71796ac189400 [2021-12-14 22:57:27,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 22:57:27,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 22:57:27,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 22:57:27,834 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 22:57:27,834 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 22:57:27,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Lobnya-Boolean-Reordered-2.c [2021-12-14 22:57:27,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edfe91508/3c5cce70c6b34f2b9260ef1ee22a77b7/FLAG321947f1b [2021-12-14 22:57:28,231 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 22:57:28,232 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Lobnya-Boolean-Reordered-2.c [2021-12-14 22:57:28,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edfe91508/3c5cce70c6b34f2b9260ef1ee22a77b7/FLAG321947f1b [2021-12-14 22:57:28,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edfe91508/3c5cce70c6b34f2b9260ef1ee22a77b7 [2021-12-14 22:57:28,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 22:57:28,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 22:57:28,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 22:57:28,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 22:57:28,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 22:57:28,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:57:28" (1/1) ... [2021-12-14 22:57:28,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a3932f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:28, skipping insertion in model container [2021-12-14 22:57:28,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:57:28" (1/1) ... [2021-12-14 22:57:28,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 22:57:28,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 22:57:28,428 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 22:57:28,432 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 22:57:28,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 22:57:28,448 INFO L208 MainTranslator]: Completed translation [2021-12-14 22:57:28,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:28 WrapperNode [2021-12-14 22:57:28,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 22:57:28,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 22:57:28,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 22:57:28,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 22:57:28,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:28" (1/1) ... [2021-12-14 22:57:28,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:28" (1/1) ... [2021-12-14 22:57:28,468 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2021-12-14 22:57:28,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 22:57:28,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 22:57:28,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 22:57:28,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 22:57:28,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:28" (1/1) ... [2021-12-14 22:57:28,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:28" (1/1) ... [2021-12-14 22:57:28,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:28" (1/1) ... [2021-12-14 22:57:28,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:28" (1/1) ... [2021-12-14 22:57:28,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:28" (1/1) ... [2021-12-14 22:57:28,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:28" (1/1) ... [2021-12-14 22:57:28,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:28" (1/1) ... [2021-12-14 22:57:28,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 22:57:28,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 22:57:28,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 22:57:28,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 22:57:28,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:28" (1/1) ... [2021-12-14 22:57:28,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:57:28,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:57:28,517 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) [2021-12-14 22:57:28,591 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 [2021-12-14 22:57:28,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 22:57:28,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 22:57:28,654 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 22:57:28,656 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 22:57:28,722 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 22:57:28,726 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 22:57:28,726 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 22:57:28,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:57:28 BoogieIcfgContainer [2021-12-14 22:57:28,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 22:57:28,729 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-14 22:57:28,729 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-14 22:57:28,731 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-14 22:57:28,732 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 22:57:28,732 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.12 10:57:28" (1/3) ... [2021-12-14 22:57:28,733 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@417ecc75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 10:57:28, skipping insertion in model container [2021-12-14 22:57:28,745 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 22:57:28,746 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:57:28" (2/3) ... [2021-12-14 22:57:28,746 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@417ecc75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 10:57:28, skipping insertion in model container [2021-12-14 22:57:28,746 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 22:57:28,746 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:57:28" (3/3) ... [2021-12-14 22:57:28,747 INFO L388 chiAutomizerObserver]: Analyzing ICFG Lobnya-Boolean-Reordered-2.c [2021-12-14 22:57:28,777 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-14 22:57:28,777 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-14 22:57:28,777 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-14 22:57:28,777 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-14 22:57:28,777 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-14 22:57:28,778 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-14 22:57:28,778 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-14 22:57:28,778 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-14 22:57:28,786 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:57:28,796 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-14 22:57:28,796 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:57:28,797 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:57:28,800 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-14 22:57:28,800 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-14 22:57:28,800 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-14 22:57:28,801 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:57:28,802 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-14 22:57:28,802 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:57:28,802 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:57:28,802 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-14 22:57:28,802 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-14 22:57:28,807 INFO L791 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~b~0#1;havoc main_~x~0#1;havoc main_~b~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~b~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 5#L18true assume !!(main_~x~0#1 >= -2147483647); 10#L22-2true [2021-12-14 22:57:28,807 INFO L793 eck$LassoCheckResult]: Loop: 10#L22-2true assume !!(0 != main_~b~0#1);main_~b~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1; 6#L22true assume main_~x~0#1 >= 0;main_~b~0#1 := 1; 10#L22-2true [2021-12-14 22:57:28,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:57:28,813 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2021-12-14 22:57:28,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:57:28,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930307467] [2021-12-14 22:57:28,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:57:28,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:57:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:57:28,872 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:57:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:57:28,889 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:57:28,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:57:28,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1476, now seen corresponding path program 1 times [2021-12-14 22:57:28,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:57:28,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151537218] [2021-12-14 22:57:28,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:57:28,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:57:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:57:28,911 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:57:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:57:28,920 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:57:28,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:57:28,921 INFO L85 PathProgramCache]: Analyzing trace with hash 28695975, now seen corresponding path program 1 times [2021-12-14 22:57:28,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:57:28,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630468742] [2021-12-14 22:57:28,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:57:28,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:57:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:57:28,932 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:57:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:57:28,941 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:57:29,076 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:57:29,076 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:57:29,076 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:57:29,077 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:57:29,077 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 22:57:29,077 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:57:29,077 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:57:29,077 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:57:29,077 INFO L133 ssoRankerPreferences]: Filename of dumped script: Lobnya-Boolean-Reordered-2.c_Iteration1_Loop [2021-12-14 22:57:29,077 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:57:29,078 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:57:29,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:57:29,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:57:29,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:57:29,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:57:29,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:57:29,216 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:57:29,216 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 22:57:29,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:57:29,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:57:29,225 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) [2021-12-14 22:57:29,226 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 [2021-12-14 22:57:29,247 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:57:29,247 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:57:29,269 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:57:29,269 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=0} Honda state: {ULTIMATE.start_main_#t~nondet2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:57:29,290 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 [2021-12-14 22:57:29,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:57:29,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:57:29,297 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) [2021-12-14 22:57:29,298 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 [2021-12-14 22:57:29,300 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:57:29,300 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:57:29,317 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:57:29,318 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: [] [2021-12-14 22:57:29,356 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 [2021-12-14 22:57:29,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:57:29,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:57:29,358 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) [2021-12-14 22:57:29,359 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 [2021-12-14 22:57:29,361 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:57:29,361 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:57:29,405 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:57:29,405 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: [] [2021-12-14 22:57:29,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-14 22:57:29,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:57:29,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:57:29,436 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) [2021-12-14 22:57:29,447 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 [2021-12-14 22:57:29,450 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:57:29,450 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:57:29,468 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:57:29,468 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~b~0#1=1} Honda state: {ULTIMATE.start_main_~b~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:57:29,484 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 [2021-12-14 22:57:29,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:57:29,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:57:29,486 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) [2021-12-14 22:57:29,488 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 [2021-12-14 22:57:29,489 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:57:29,489 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:57:29,551 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 [2021-12-14 22:57:29,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:57:29,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:57:29,553 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) [2021-12-14 22:57:29,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 22:57:29,559 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:57:29,583 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 [2021-12-14 22:57:29,612 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 22:57:29,615 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 [2021-12-14 22:57:29,615 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:57:29,616 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:57:29,616 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:57:29,616 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:57:29,616 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 22:57:29,616 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:57:29,616 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:57:29,616 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:57:29,616 INFO L133 ssoRankerPreferences]: Filename of dumped script: Lobnya-Boolean-Reordered-2.c_Iteration1_Loop [2021-12-14 22:57:29,616 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:57:29,616 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:57:29,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:57:29,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:57:29,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:57:29,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:57:29,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:57:29,691 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:57:29,694 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 22:57:29,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:57:29,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:57:29,696 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) [2021-12-14 22:57:29,697 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 [2021-12-14 22:57:29,712 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 [2021-12-14 22:57:29,717 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:57:29,718 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:57:29,718 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:57:29,718 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:57:29,725 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 22:57:29,725 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 22:57:29,747 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:57:29,765 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 [2021-12-14 22:57:29,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:57:29,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:57:29,766 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) [2021-12-14 22:57:29,767 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 [2021-12-14 22:57:29,769 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 [2021-12-14 22:57:29,775 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:57:29,776 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:57:29,776 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:57:29,776 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:57:29,778 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 22:57:29,778 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 22:57:29,791 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:57:29,810 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 [2021-12-14 22:57:29,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:57:29,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:57:29,811 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) [2021-12-14 22:57:29,812 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 [2021-12-14 22:57:29,814 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 [2021-12-14 22:57:29,820 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:57:29,820 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:57:29,820 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:57:29,820 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:57:29,820 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:57:29,821 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:57:29,821 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:57:29,841 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:57:29,857 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 [2021-12-14 22:57:29,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:57:29,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:57:29,858 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) [2021-12-14 22:57:29,859 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 [2021-12-14 22:57:29,860 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 [2021-12-14 22:57:29,867 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:57:29,867 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:57:29,867 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:57:29,867 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-14 22:57:29,867 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:57:29,871 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-14 22:57:29,871 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:57:29,877 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:57:29,894 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 [2021-12-14 22:57:29,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:57:29,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:57:29,896 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) [2021-12-14 22:57:29,897 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 [2021-12-14 22:57:29,899 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 [2021-12-14 22:57:29,909 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:57:29,909 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:57:29,909 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:57:29,909 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:57:29,909 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:57:29,910 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:57:29,910 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:57:29,913 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 22:57:29,917 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-14 22:57:29,917 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 22:57:29,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:57:29,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:57:29,920 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) [2021-12-14 22:57:29,921 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 [2021-12-14 22:57:29,973 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 22:57:29,973 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 22:57:29,973 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 22:57:29,973 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-12-14 22:57:29,989 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 [2021-12-14 22:57:29,991 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 22:57:30,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:57:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:57:30,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:57:30,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:57:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:57:30,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:57:30,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:57:30,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:57:30,058 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-14 22:57:30,059 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) 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) [2021-12-14 22:57:30,087 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.6666666666666667) 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 33 states and 40 transitions. Complement of second has 7 states. [2021-12-14 22:57:30,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-14 22:57:30,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) 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) [2021-12-14 22:57:30,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2021-12-14 22:57:30,092 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 3 letters. Loop has 2 letters. [2021-12-14 22:57:30,093 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:57:30,093 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 5 letters. Loop has 2 letters. [2021-12-14 22:57:30,093 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:57:30,093 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 3 letters. Loop has 4 letters. [2021-12-14 22:57:30,094 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:57:30,094 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 40 transitions. [2021-12-14 22:57:30,100 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-14 22:57:30,102 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 10 states and 13 transitions. [2021-12-14 22:57:30,103 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-12-14 22:57:30,103 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-12-14 22:57:30,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2021-12-14 22:57:30,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:57:30,104 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-12-14 22:57:30,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2021-12-14 22:57:30,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-12-14 22:57:30,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:57:30,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2021-12-14 22:57:30,120 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2021-12-14 22:57:30,120 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2021-12-14 22:57:30,120 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-14 22:57:30,120 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 12 transitions. [2021-12-14 22:57:30,121 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-14 22:57:30,121 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:57:30,121 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:57:30,121 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-14 22:57:30,121 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-14 22:57:30,121 INFO L791 eck$LassoCheckResult]: Stem: 91#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 92#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~b~0#1;havoc main_~x~0#1;havoc main_~b~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~b~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 89#L18 assume !!(main_~x~0#1 >= -2147483647); 90#L22-2 assume !!(0 != main_~b~0#1);main_~b~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1; 84#L22 [2021-12-14 22:57:30,121 INFO L793 eck$LassoCheckResult]: Loop: 84#L22 assume !(main_~x~0#1 >= 0);main_~b~0#1 := 0; 85#L22-2 assume !!(0 != main_~b~0#1);main_~b~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1; 84#L22 [2021-12-14 22:57:30,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:57:30,122 INFO L85 PathProgramCache]: Analyzing trace with hash 925676, now seen corresponding path program 1 times [2021-12-14 22:57:30,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:57:30,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155146164] [2021-12-14 22:57:30,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:57:30,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:57:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:57:30,126 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:57:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:57:30,128 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:57:30,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:57:30,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1628, now seen corresponding path program 1 times [2021-12-14 22:57:30,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:57:30,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286347469] [2021-12-14 22:57:30,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:57:30,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:57:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:57:30,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:57:30,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 22:57:30,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286347469] [2021-12-14 22:57:30,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286347469] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:57:30,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:57:30,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-14 22:57:30,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568444570] [2021-12-14 22:57:30,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:57:30,156 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 22:57:30,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 22:57:30,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 22:57:30,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 22:57:30,159 INFO L87 Difference]: Start difference. First operand 9 states and 12 transitions. cyclomatic complexity: 5 Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-12-14 22:57:30,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:57:30,166 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-12-14 22:57:30,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 22:57:30,166 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2021-12-14 22:57:30,169 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-14 22:57:30,169 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2021-12-14 22:57:30,169 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-14 22:57:30,170 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-14 22:57:30,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-14 22:57:30,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 22:57:30,170 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 22:57:30,170 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 22:57:30,170 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 22:57:30,170 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-14 22:57:30,170 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-14 22:57:30,170 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-14 22:57:30,171 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-14 22:57:30,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.12 10:57:30 BoogieIcfgContainer [2021-12-14 22:57:30,179 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-14 22:57:30,180 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 22:57:30,180 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 22:57:30,180 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 22:57:30,180 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:57:28" (3/4) ... [2021-12-14 22:57:30,182 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 22:57:30,182 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 22:57:30,183 INFO L158 Benchmark]: Toolchain (without parser) took 1926.27ms. Allocated memory was 102.8MB in the beginning and 159.4MB in the end (delta: 56.6MB). Free memory was 75.6MB in the beginning and 98.9MB in the end (delta: -23.3MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. [2021-12-14 22:57:30,183 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 102.8MB. Free memory was 58.8MB in the beginning and 58.8MB in the end (delta: 50.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 22:57:30,184 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.36ms. Allocated memory is still 102.8MB. Free memory was 75.6MB in the beginning and 80.4MB in the end (delta: -4.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 22:57:30,184 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.30ms. Allocated memory is still 102.8MB. Free memory was 80.4MB in the beginning and 79.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 22:57:30,184 INFO L158 Benchmark]: Boogie Preprocessor took 12.18ms. Allocated memory is still 102.8MB. Free memory was 79.3MB in the beginning and 78.3MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 22:57:30,185 INFO L158 Benchmark]: RCFGBuilder took 246.20ms. Allocated memory is still 102.8MB. Free memory was 78.3MB in the beginning and 70.3MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 22:57:30,185 INFO L158 Benchmark]: BuchiAutomizer took 1450.11ms. Allocated memory was 102.8MB in the beginning and 159.4MB in the end (delta: 56.6MB). Free memory was 70.3MB in the beginning and 99.6MB in the end (delta: -29.4MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. [2021-12-14 22:57:30,185 INFO L158 Benchmark]: Witness Printer took 2.82ms. Allocated memory is still 159.4MB. Free memory was 99.6MB in the beginning and 98.9MB in the end (delta: 698.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 22:57:30,187 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 102.8MB. Free memory was 58.8MB in the beginning and 58.8MB in the end (delta: 50.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 191.36ms. Allocated memory is still 102.8MB. Free memory was 75.6MB in the beginning and 80.4MB in the end (delta: -4.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.30ms. Allocated memory is still 102.8MB. Free memory was 80.4MB in the beginning and 79.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 12.18ms. Allocated memory is still 102.8MB. Free memory was 79.3MB in the beginning and 78.3MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 246.20ms. Allocated memory is still 102.8MB. Free memory was 78.3MB in the beginning and 70.3MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1450.11ms. Allocated memory was 102.8MB in the beginning and 159.4MB in the end (delta: 56.6MB). Free memory was 70.3MB in the beginning and 99.6MB in the end (delta: -29.4MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. * Witness Printer took 2.82ms. Allocated memory is still 159.4MB. Free memory was 99.6MB in the beginning and 98.9MB in the end (delta: 698.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 9 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 20 mSDtfsCounter, 10 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax170 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq170 hnf94 smp100 dnf150 smp100 tf108 neg92 sie116 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 53ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-14 22:57:30,209 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 [2021-12-14 22:57:30,425 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE