./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.01.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.01.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 05602efd0716c9bc46b30aae12cb2e2448644d24 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:34:15,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:34:15,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:34:15,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:34:15,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:34:15,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:34:15,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:34:15,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:34:15,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:34:15,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:34:15,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:34:15,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:34:15,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:34:15,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:34:15,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:34:15,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:34:15,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:34:15,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:34:15,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:34:15,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:34:15,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:34:15,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:34:15,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:34:15,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:34:15,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:34:15,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:34:15,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:34:15,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:34:15,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:34:15,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:34:15,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:34:15,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:34:15,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:34:15,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:34:15,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:34:15,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:34:15,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:34:15,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:34:15,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:34:15,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:34:15,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:34:15,544 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:34:15,568 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:34:15,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:34:15,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:34:15,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:34:15,570 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:34:15,570 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:34:15,571 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:34:15,571 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:34:15,571 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:34:15,571 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:34:15,571 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:34:15,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:34:15,572 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:34:15,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:34:15,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:34:15,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:34:15,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:34:15,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:34:15,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:34:15,573 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:34:15,573 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:34:15,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:34:15,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:34:15,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:34:15,574 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:34:15,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:34:15,574 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:34:15,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:34:15,575 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:34:15,576 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:34:15,576 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05602efd0716c9bc46b30aae12cb2e2448644d24 [2020-10-20 06:34:15,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:34:15,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:34:15,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:34:15,789 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:34:15,790 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:34:15,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.01.c [2020-10-20 06:34:15,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a84a90b0a/97e5d11c8c6241bc9e2753300b82cf27/FLAG0df7b7085 [2020-10-20 06:34:16,262 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:34:16,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.01.c [2020-10-20 06:34:16,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a84a90b0a/97e5d11c8c6241bc9e2753300b82cf27/FLAG0df7b7085 [2020-10-20 06:34:16,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a84a90b0a/97e5d11c8c6241bc9e2753300b82cf27 [2020-10-20 06:34:16,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:34:16,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:34:16,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:34:16,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:34:16,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:34:16,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:34:16" (1/1) ... [2020-10-20 06:34:16,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cab0cd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:16, skipping insertion in model container [2020-10-20 06:34:16,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:34:16" (1/1) ... [2020-10-20 06:34:16,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:34:16,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:34:16,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:34:16,967 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:34:16,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:34:16,989 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:34:16,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:16 WrapperNode [2020-10-20 06:34:16,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:34:16,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:34:16,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:34:16,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:34:16,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:16" (1/1) ... [2020-10-20 06:34:17,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:16" (1/1) ... [2020-10-20 06:34:17,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:34:17,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:34:17,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:34:17,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:34:17,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:16" (1/1) ... [2020-10-20 06:34:17,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:16" (1/1) ... [2020-10-20 06:34:17,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:16" (1/1) ... [2020-10-20 06:34:17,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:16" (1/1) ... [2020-10-20 06:34:17,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:16" (1/1) ... [2020-10-20 06:34:17,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:16" (1/1) ... [2020-10-20 06:34:17,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:16" (1/1) ... [2020-10-20 06:34:17,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:34:17,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:34:17,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:34:17,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:34:17,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:17,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:34:17,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:34:17,225 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:34:17,226 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 06:34:17,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:34:17 BoogieIcfgContainer [2020-10-20 06:34:17,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:34:17,228 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:34:17,228 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:34:17,231 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:34:17,232 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:34:17,232 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:34:16" (1/3) ... [2020-10-20 06:34:17,233 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@78d29be2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:34:17, skipping insertion in model container [2020-10-20 06:34:17,233 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:34:17,234 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:16" (2/3) ... [2020-10-20 06:34:17,234 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@78d29be2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:34:17, skipping insertion in model container [2020-10-20 06:34:17,234 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:34:17,234 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:34:17" (3/3) ... [2020-10-20 06:34:17,236 INFO L373 chiAutomizerObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex3.01.c [2020-10-20 06:34:17,297 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:34:17,298 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:34:17,298 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:34:17,298 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:34:17,298 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:34:17,298 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:34:17,298 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:34:17,299 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:34:17,310 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-10-20 06:34:17,329 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-20 06:34:17,329 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:17,329 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:17,335 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:34:17,335 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-20 06:34:17,335 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:34:17,335 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-10-20 06:34:17,336 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-20 06:34:17,336 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:17,336 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:17,336 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:34:17,336 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-20 06:34:17,343 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 8#L27-2true [2020-10-20 06:34:17,343 INFO L796 eck$LassoCheckResult]: Loop: 8#L27-2true assume !!(main_~x~0 < main_~y~0);main_~x~0 := 1 + main_~x~0;main_~y~0 := main_~z~0; 8#L27-2true [2020-10-20 06:34:17,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:17,349 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-20 06:34:17,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:17,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697903991] [2020-10-20 06:34:17,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:17,435 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:17,439 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:17,456 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:17,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:17,458 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2020-10-20 06:34:17,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:17,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218034887] [2020-10-20 06:34:17,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:17,471 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:17,475 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:17,477 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:17,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:17,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-10-20 06:34:17,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:17,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707851419] [2020-10-20 06:34:17,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:17,487 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:17,492 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:17,494 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:17,560 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:17,561 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:17,561 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:17,571 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:17,571 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:34:17,571 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:17,572 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:17,572 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:17,572 INFO L133 ssoRankerPreferences]: Filename of dumped script: ChenFlurMukhopadhyay-SAS2012-Ex3.01.c_Iteration1_Loop [2020-10-20 06:34:17,572 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:17,573 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:17,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:17,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:17,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:17,772 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:17,773 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:17,789 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:17,789 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:17,802 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:17,802 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: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:17,841 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:17,842 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:17,847 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:17,847 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: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:17,877 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:17,877 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:17,919 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:34:17,919 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:18,500 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:34:18,502 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:18,503 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:18,503 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:18,503 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:18,503 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:34:18,503 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:18,504 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:18,504 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:18,504 INFO L133 ssoRankerPreferences]: Filename of dumped script: ChenFlurMukhopadhyay-SAS2012-Ex3.01.c_Iteration1_Loop [2020-10-20 06:34:18,504 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:18,504 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:18,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:18,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:18,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:18,623 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:18,628 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:18,642 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:18,644 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:18,645 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:18,645 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:18,645 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:18,652 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:18,652 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:18,658 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:18,692 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:18,694 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:18,694 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:18,694 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:18,694 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:18,699 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:18,699 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:34:18,705 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:18,743 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:18,745 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:18,745 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:18,746 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:18,746 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:18,746 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:18,749 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:18,749 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:34:18,753 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-10-20 06:34:18,786 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:18,803 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:18,805 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:18,806 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:18,806 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:18,806 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-10-20 06:34:18,811 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2020-10-20 06:34:18,812 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:18,819 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:18,858 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:18,860 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:18,861 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:18,861 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:18,861 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-10-20 06:34:18,867 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2020-10-20 06:34:18,867 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2020-10-20 06:34:18,894 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:18,954 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:18,958 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:18,958 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:18,958 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:18,959 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:18,959 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-10-20 06:34:18,962 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2020-10-20 06:34:18,963 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:18,968 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:34:18,978 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2020-10-20 06:34:18,978 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:18,993 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:34:18,993 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:34:18,994 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:34:18,995 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~z~0 - 1*ULTIMATE.start_main_~x~0 f1 = -1*ULTIMATE.start_main_~x~0 + 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:19,039 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:34:19,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:19,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:19,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:19,102 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:34:19,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:19,122 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 [2020-10-20 06:34:19,124 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states. Second operand 2 states. [2020-10-20 06:34:19,171 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states.. Second operand 2 states. Result 15 states and 18 transitions. Complement of second has 5 states. [2020-10-20 06:34:19,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:34:19,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-20 06:34:19,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-10-20 06:34:19,176 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 1 letters. [2020-10-20 06:34:19,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:19,177 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 1 letters. [2020-10-20 06:34:19,177 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:19,177 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 2 letters. [2020-10-20 06:34:19,177 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:19,178 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2020-10-20 06:34:19,180 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:34:19,183 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 0 states and 0 transitions. [2020-10-20 06:34:19,184 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:34:19,184 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:34:19,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:34:19,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:34:19,185 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:34:19,185 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:34:19,186 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:34:19,186 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:34:19,186 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:34:19,186 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:34:19,186 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:34:19,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:34:19 BoogieIcfgContainer [2020-10-20 06:34:19,193 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:34:19,194 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:34:19,194 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:34:19,194 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:34:19,195 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:34:17" (3/4) ... [2020-10-20 06:34:19,199 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:34:19,199 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:34:19,202 INFO L168 Benchmark]: Toolchain (without parser) took 2553.49 ms. Allocated memory was 34.6 MB in the beginning and 48.8 MB in the end (delta: 14.2 MB). Free memory was 6.5 MB in the beginning and 17.2 MB in the end (delta: -10.7 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:19,203 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 34.1 MB. Free memory was 11.3 MB in the beginning and 11.3 MB in the end (delta: 91.0 kB). Peak memory consumption was 91.0 kB. Max. memory is 14.3 GB. [2020-10-20 06:34:19,204 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.79 ms. Allocated memory was 37.2 MB in the beginning and 45.1 MB in the end (delta: 7.9 MB). Free memory was 18.9 MB in the beginning and 28.6 MB in the end (delta: -9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:19,205 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.96 ms. Allocated memory is still 45.1 MB. Free memory was 28.6 MB in the beginning and 27.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:19,206 INFO L168 Benchmark]: Boogie Preprocessor took 18.31 ms. Allocated memory is still 45.1 MB. Free memory was 27.1 MB in the beginning and 26.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:19,207 INFO L168 Benchmark]: RCFGBuilder took 188.69 ms. Allocated memory is still 45.1 MB. Free memory was 25.8 MB in the beginning and 17.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:19,208 INFO L168 Benchmark]: BuchiAutomizer took 1965.16 ms. Allocated memory was 45.1 MB in the beginning and 48.8 MB in the end (delta: 3.7 MB). Free memory was 17.3 MB in the beginning and 17.9 MB in the end (delta: -636.0 kB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:19,209 INFO L168 Benchmark]: Witness Printer took 5.31 ms. Allocated memory is still 48.8 MB. Free memory was 17.9 MB in the beginning and 17.6 MB in the end (delta: 331.7 kB). Peak memory consumption was 331.7 kB. Max. memory is 14.3 GB. [2020-10-20 06:34:19,215 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 34.1 MB. Free memory was 11.3 MB in the beginning and 11.3 MB in the end (delta: 91.0 kB). Peak memory consumption was 91.0 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 325.79 ms. Allocated memory was 37.2 MB in the beginning and 45.1 MB in the end (delta: 7.9 MB). Free memory was 18.9 MB in the beginning and 28.6 MB in the end (delta: -9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 28.96 ms. Allocated memory is still 45.1 MB. Free memory was 28.6 MB in the beginning and 27.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 18.31 ms. Allocated memory is still 45.1 MB. Free memory was 27.1 MB in the beginning and 26.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 188.69 ms. Allocated memory is still 45.1 MB. Free memory was 25.8 MB in the beginning and 17.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 1965.16 ms. Allocated memory was 45.1 MB in the beginning and 48.8 MB in the end (delta: 3.7 MB). Free memory was 17.3 MB in the beginning and 17.9 MB in the end (delta: -636.0 kB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. * Witness Printer took 5.31 ms. Allocated memory is still 48.8 MB. Free memory was 17.9 MB in the beginning and 17.6 MB in the end (delta: 331.7 kB). Peak memory consumption was 331.7 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has 2-nested ranking function (if z + -1 * x > 0 then 1 else 0), (if z + -1 * x > 0 then z + -1 * x else -1 * x + y) and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.7s. 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 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 4 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax192 hnf100 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq176 hnf91 smp100 dnf100 smp100 tf109 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 32ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...