./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive/McCarthy91-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/recursive/McCarthy91-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 90ff89d2ba0517af453003604f3ee5a230759bec ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 07:59:51,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 07:59:51,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 07:59:51,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 07:59:51,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 07:59:51,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 07:59:51,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 07:59:51,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 07:59:51,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 07:59:51,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 07:59:51,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 07:59:51,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 07:59:51,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 07:59:51,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 07:59:51,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 07:59:51,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 07:59:51,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 07:59:51,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 07:59:51,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 07:59:51,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 07:59:51,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 07:59:51,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 07:59:51,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 07:59:51,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 07:59:51,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 07:59:51,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 07:59:51,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 07:59:51,550 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 07:59:51,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 07:59:51,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 07:59:51,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 07:59:51,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 07:59:51,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 07:59:51,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 07:59:51,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 07:59:51,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 07:59:51,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 07:59:51,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 07:59:51,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 07:59:51,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 07:59:51,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 07:59:51,572 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-20 07:59:51,618 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 07:59:51,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 07:59:51,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 07:59:51,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 07:59:51,621 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 07:59:51,621 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 07:59:51,622 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 07:59:51,622 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 07:59:51,622 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 07:59:51,622 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 07:59:51,623 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 07:59:51,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 07:59:51,624 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 07:59:51,624 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 07:59:51,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 07:59:51,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 07:59:51,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 07:59:51,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 07:59:51,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 07:59:51,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 07:59:51,626 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 07:59:51,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 07:59:51,626 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 07:59:51,627 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 07:59:51,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 07:59:51,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 07:59:51,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 07:59:51,627 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 07:59:51,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 07:59:51,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 07:59:51,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 07:59:51,628 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 07:59:51,630 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 07:59:51,630 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90ff89d2ba0517af453003604f3ee5a230759bec [2020-10-20 07:59:51,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 07:59:51,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 07:59:51,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 07:59:51,882 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 07:59:51,883 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 07:59:51,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/McCarthy91-1.c [2020-10-20 07:59:51,978 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aca25a831/7dee78f943c34097a098a5d3ad142eda/FLAG1930cc479 [2020-10-20 07:59:52,530 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 07:59:52,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/McCarthy91-1.c [2020-10-20 07:59:52,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aca25a831/7dee78f943c34097a098a5d3ad142eda/FLAG1930cc479 [2020-10-20 07:59:52,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aca25a831/7dee78f943c34097a098a5d3ad142eda [2020-10-20 07:59:52,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 07:59:52,894 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 07:59:52,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 07:59:52,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 07:59:52,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 07:59:52,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 07:59:52" (1/1) ... [2020-10-20 07:59:52,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f0350bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:52, skipping insertion in model container [2020-10-20 07:59:52,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 07:59:52" (1/1) ... [2020-10-20 07:59:52,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 07:59:52,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 07:59:53,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 07:59:53,208 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 07:59:53,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 07:59:53,246 INFO L208 MainTranslator]: Completed translation [2020-10-20 07:59:53,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:53 WrapperNode [2020-10-20 07:59:53,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 07:59:53,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 07:59:53,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 07:59:53,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 07:59:53,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:53" (1/1) ... [2020-10-20 07:59:53,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:53" (1/1) ... [2020-10-20 07:59:53,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 07:59:53,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 07:59:53,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 07:59:53,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 07:59:53,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:53" (1/1) ... [2020-10-20 07:59:53,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:53" (1/1) ... [2020-10-20 07:59:53,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:53" (1/1) ... [2020-10-20 07:59:53,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:53" (1/1) ... [2020-10-20 07:59:53,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:53" (1/1) ... [2020-10-20 07:59:53,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:53" (1/1) ... [2020-10-20 07:59:53,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:53" (1/1) ... [2020-10-20 07:59:53,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 07:59:53,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 07:59:53,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 07:59:53,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 07:59:53,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:53" (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 07:59:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 07:59:53,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 07:59:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 07:59:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 07:59:53,393 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2020-10-20 07:59:53,393 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2020-10-20 07:59:53,622 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 07:59:53,623 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-20 07:59:53,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:59:53 BoogieIcfgContainer [2020-10-20 07:59:53,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 07:59:53,627 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 07:59:53,627 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 07:59:53,631 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 07:59:53,633 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:59:53,634 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 07:59:52" (1/3) ... [2020-10-20 07:59:53,635 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6f88ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 07:59:53, skipping insertion in model container [2020-10-20 07:59:53,635 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:59:53,636 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:53" (2/3) ... [2020-10-20 07:59:53,636 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6f88ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 07:59:53, skipping insertion in model container [2020-10-20 07:59:53,636 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:59:53,637 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:59:53" (3/3) ... [2020-10-20 07:59:53,639 INFO L373 chiAutomizerObserver]: Analyzing ICFG McCarthy91-1.c [2020-10-20 07:59:53,706 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 07:59:53,707 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 07:59:53,707 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 07:59:53,707 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 07:59:53,707 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 07:59:53,707 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 07:59:53,708 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 07:59:53,708 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 07:59:53,734 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-20 07:59:53,773 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 07:59:53,774 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:59:53,774 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:59:53,785 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-20 07:59:53,786 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 07:59:53,786 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 07:59:53,787 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-20 07:59:53,789 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 07:59:53,790 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:59:53,790 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:59:53,791 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-20 07:59:53,791 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 07:59:53,802 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 11#L-1true havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 6#L28true call main_#t~ret10 := f91(main_~x~0);< 18#f91ENTRYtrue [2020-10-20 07:59:53,803 INFO L796 eck$LassoCheckResult]: Loop: 18#f91ENTRYtrue ~x := #in~x; 5#L18true assume !(~x > 100); 19#L21true call #t~ret7 := f91(11 + ~x);< 18#f91ENTRYtrue [2020-10-20 07:59:53,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:59:53,812 INFO L82 PathProgramCache]: Analyzing trace with hash 29879, now seen corresponding path program 1 times [2020-10-20 07:59:53,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:59:53,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987232221] [2020-10-20 07:59:53,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:59:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:53,971 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:54,000 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:54,049 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:59:54,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:59:54,051 INFO L82 PathProgramCache]: Analyzing trace with hash 46807, now seen corresponding path program 1 times [2020-10-20 07:59:54,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:59:54,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653346552] [2020-10-20 07:59:54,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:59:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:54,061 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:54,064 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:54,066 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:59:54,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:59:54,068 INFO L82 PathProgramCache]: Analyzing trace with hash 890142305, now seen corresponding path program 1 times [2020-10-20 07:59:54,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:59:54,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253116857] [2020-10-20 07:59:54,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:59:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:54,085 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:54,099 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:54,105 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:59:54,214 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:59:54,215 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:59:54,215 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:59:54,215 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:59:54,216 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 07:59:54,216 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:54,216 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:59:54,216 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:59:54,216 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration1_Loop [2020-10-20 07:59:54,217 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:59:54,217 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:59:54,238 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 07:59:54,252 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 07:59:54,256 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 07:59:54,265 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 07:59:54,278 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 07:59:54,346 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:59:54,346 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:54,359 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:59:54,359 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:59:54,375 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:59:54,375 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_~x=0} Honda state: {f91_~x=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 07:59:54,419 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:59:54,419 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:59:54,426 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:59:54,426 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} 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 07:59:54,452 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:59:54,452 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:59:54,456 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:59:54,457 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret8=0} Honda state: {f91_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 07:59:54,486 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:59:54,486 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:59:54,491 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:59:54,491 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret7=0} Honda state: {f91_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:54,518 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:59:54,518 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 07:59:54,560 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 07:59:54,560 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:59:55,575 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 07:59:55,578 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:59:55,578 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:59:55,579 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:59:55,579 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:59:55,579 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 07:59:55,579 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:55,580 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:59:55,580 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:59:55,580 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration1_Loop [2020-10-20 07:59:55,580 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:59:55,580 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:59:55,582 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 07:59:55,586 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 07:59:55,590 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 07:59:55,594 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 07:59:55,597 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 07:59:55,652 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:59:55,658 INFO L489 LassoAnalysis]: Using template 'affine'. 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 07:59:55,680 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 07:59:55,684 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:59:55,685 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:59:55,686 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:59:55,686 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:59:55,686 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:59:55,690 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:59:55,691 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:59:55,694 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:59:55,743 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 07:59:55,746 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:59:55,746 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:59:55,747 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:59:55,747 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:59:55,747 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:59:55,748 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:59:55,748 INFO L402 nArgumentSynthesizer]: A total of 0 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 07:59:55,751 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 07:59:55,803 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 07:59:55,805 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:59:55,806 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:59:55,806 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:59:55,806 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:59:55,806 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:59:55,810 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:59:55,810 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:59:55,818 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) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:55,850 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 07:59:55,855 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:59:55,855 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:59:55,855 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:59:55,855 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:59:55,856 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:59:55,858 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:59:55,858 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:59:55,862 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 12 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:55,899 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 07:59:55,901 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:59:55,901 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:59:55,902 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:59:55,902 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:59:55,902 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:59:55,903 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:59:55,904 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:59:55,907 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 07:59:55,918 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 07:59:55,918 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:59:55,937 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 07:59:55,938 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 07:59:55,938 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 07:59:55,939 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -2*f91_#in~x + 211 Supporting invariants [] Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:55,977 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 07:59:56,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:59:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:59:56,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 07:59:56,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:59:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:59:56,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 07:59:56,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:59:56,128 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 07:59:56,147 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-20 07:59:56,149 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 4 states. [2020-10-20 07:59:56,290 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states.. Second operand 4 states. Result 35 states and 43 transitions. Complement of second has 12 states. [2020-10-20 07:59:56,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 07:59:56,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 07:59:56,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-10-20 07:59:56,297 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2020-10-20 07:59:56,299 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:59:56,300 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2020-10-20 07:59:56,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:59:56,301 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2020-10-20 07:59:56,301 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:59:56,302 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 43 transitions. [2020-10-20 07:59:56,307 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 07:59:56,317 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 19 states and 25 transitions. [2020-10-20 07:59:56,319 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-10-20 07:59:56,320 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-10-20 07:59:56,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2020-10-20 07:59:56,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 07:59:56,324 INFO L691 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2020-10-20 07:59:56,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2020-10-20 07:59:56,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2020-10-20 07:59:56,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-20 07:59:56,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2020-10-20 07:59:56,373 INFO L714 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2020-10-20 07:59:56,373 INFO L594 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2020-10-20 07:59:56,373 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 07:59:56,373 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2020-10-20 07:59:56,374 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 07:59:56,375 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:59:56,375 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:59:56,376 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 07:59:56,377 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-20 07:59:56,377 INFO L794 eck$LassoCheckResult]: Stem: 107#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 105#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 106#L28 call main_#t~ret10 := f91(main_~x~0);< 116#f91ENTRY ~x := #in~x; 111#L18 assume !(~x > 100); 109#L21 call #t~ret7 := f91(11 + ~x);< 119#f91ENTRY ~x := #in~x; 108#L18 assume ~x > 100;#res := ~x - 10; 110#f91FINAL assume true; 117#f91EXIT >#29#return; 114#L21-1 [2020-10-20 07:59:56,377 INFO L796 eck$LassoCheckResult]: Loop: 114#L21-1 call #t~ret8 := f91(#t~ret7);< 118#f91ENTRY ~x := #in~x; 121#L18 assume !(~x > 100); 113#L21 call #t~ret7 := f91(11 + ~x);< 118#f91ENTRY ~x := #in~x; 121#L18 assume ~x > 100;#res := ~x - 10; 115#f91FINAL assume true; 120#f91EXIT >#29#return; 114#L21-1 [2020-10-20 07:59:56,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:59:56,378 INFO L82 PathProgramCache]: Analyzing trace with hash -218206616, now seen corresponding path program 1 times [2020-10-20 07:59:56,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:59:56,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230650282] [2020-10-20 07:59:56,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:59:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:56,397 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:56,411 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:56,417 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:59:56,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:59:56,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1767505954, now seen corresponding path program 1 times [2020-10-20 07:59:56,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:59:56,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711797253] [2020-10-20 07:59:56,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:59:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:56,426 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:56,432 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:56,434 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:59:56,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:59:56,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1919740023, now seen corresponding path program 1 times [2020-10-20 07:59:56,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:59:56,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612348131] [2020-10-20 07:59:56,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:59:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:56,457 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:56,498 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:56,510 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:59:56,698 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:59:56,699 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:59:56,699 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:59:56,699 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:59:56,699 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 07:59:56,699 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:56,699 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:59:56,699 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:59:56,700 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration2_Loop [2020-10-20 07:59:56,700 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:59:56,700 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:59:56,704 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 07:59:56,717 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 07:59:56,742 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 07:59:56,807 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:59:56,808 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:59:56,812 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:59:56,812 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:56,817 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:59:56,818 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret8=0} Honda state: {f91_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:59:56,871 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:59:56,872 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:56,942 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 07:59:56,942 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 08:00:09,015 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2020-10-20 08:00:09,021 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 08:00:09,021 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 08:00:09,021 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 08:00:09,021 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 08:00:09,021 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 08:00:09,021 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:09,021 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 08:00:09,022 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 08:00:09,022 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration2_Loop [2020-10-20 08:00:09,022 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 08:00:09,022 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 08:00:09,024 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 08:00:09,028 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 08:00:09,040 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 08:00:09,096 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 08:00:09,097 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:09,110 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 08:00:09,112 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:00:09,112 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:00:09,112 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:00:09,112 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:00:09,112 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:00:09,113 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:00:09,113 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:00:09,115 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:00:09,173 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 08:00:09,176 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:00:09,176 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:00:09,177 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:00:09,177 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:00:09,177 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:00:09,182 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:00:09,183 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:09,188 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 08:00:09,194 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 08:00:09,194 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:09,206 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 08:00:09,206 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 08:00:09,207 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 08:00:09,207 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret7) = -2*f91_#t~ret7 + 201 Supporting invariants [] [2020-10-20 08:00:09,245 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 08:00:09,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:09,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 08:00:09,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:09,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 08:00:09,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 08:00:09,608 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2020-10-20 08:00:09,611 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6 Second operand 9 states. [2020-10-20 08:00:09,936 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6. Second operand 9 states. Result 51 states and 73 transitions. Complement of second has 32 states. [2020-10-20 08:00:09,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2020-10-20 08:00:09,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-20 08:00:09,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2020-10-20 08:00:09,940 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 8 letters. [2020-10-20 08:00:09,940 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:09,940 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 18 letters. Loop has 8 letters. [2020-10-20 08:00:09,941 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:09,941 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 16 letters. [2020-10-20 08:00:09,941 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:09,942 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 73 transitions. [2020-10-20 08:00:09,947 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-10-20 08:00:09,952 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 42 states and 62 transitions. [2020-10-20 08:00:09,952 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2020-10-20 08:00:09,953 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2020-10-20 08:00:09,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 62 transitions. [2020-10-20 08:00:09,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 08:00:09,954 INFO L691 BuchiCegarLoop]: Abstraction has 42 states and 62 transitions. [2020-10-20 08:00:09,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 62 transitions. [2020-10-20 08:00:09,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2020-10-20 08:00:09,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 08:00:09,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2020-10-20 08:00:09,962 INFO L714 BuchiCegarLoop]: Abstraction has 36 states and 51 transitions. [2020-10-20 08:00:09,962 INFO L594 BuchiCegarLoop]: Abstraction has 36 states and 51 transitions. [2020-10-20 08:00:09,962 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 08:00:09,962 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 51 transitions. [2020-10-20 08:00:09,964 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-10-20 08:00:09,964 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:00:09,964 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:00:09,965 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 08:00:09,965 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 08:00:09,965 INFO L794 eck$LassoCheckResult]: Stem: 293#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 291#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 292#L28 call main_#t~ret10 := f91(main_~x~0);< 298#f91ENTRY ~x := #in~x; 296#L18 assume !(~x > 100); 297#L21 call #t~ret7 := f91(11 + ~x);< 316#f91ENTRY ~x := #in~x; 317#L18 assume ~x > 100;#res := ~x - 10; 308#f91FINAL assume true; 309#f91EXIT >#29#return; 301#L21-1 call #t~ret8 := f91(#t~ret7);< 314#f91ENTRY ~x := #in~x; 326#L18 assume !(~x > 100); 295#L21 [2020-10-20 08:00:09,965 INFO L796 eck$LassoCheckResult]: Loop: 295#L21 call #t~ret7 := f91(11 + ~x);< 315#f91ENTRY ~x := #in~x; 294#L18 assume !(~x > 100); 295#L21 [2020-10-20 08:00:09,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:09,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1987218266, now seen corresponding path program 2 times [2020-10-20 08:00:09,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:00:09,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189397606] [2020-10-20 08:00:09,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:00:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:00:09,982 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:00:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:00:09,995 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:00:10,017 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:00:10,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:10,018 INFO L82 PathProgramCache]: Analyzing trace with hash 57247, now seen corresponding path program 2 times [2020-10-20 08:00:10,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:00:10,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000860149] [2020-10-20 08:00:10,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:00:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:00:10,022 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:00:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:00:10,024 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:00:10,026 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:00:10,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:10,026 INFO L82 PathProgramCache]: Analyzing trace with hash -609818202, now seen corresponding path program 3 times [2020-10-20 08:00:10,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:00:10,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960697531] [2020-10-20 08:00:10,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:00:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:10,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 08:00:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:10,180 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 08:00:10,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960697531] [2020-10-20 08:00:10,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 08:00:10,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 08:00:10,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688768715] [2020-10-20 08:00:10,224 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 08:00:10,225 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 08:00:10,225 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 08:00:10,225 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 08:00:10,225 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 08:00:10,225 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:10,225 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 08:00:10,225 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 08:00:10,226 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration3_Loop [2020-10-20 08:00:10,226 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 08:00:10,226 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 08:00:10,228 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 08:00:10,231 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 08:00:10,234 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 08:00:10,237 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 08:00:10,279 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 08:00:10,279 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:00:10,292 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 08:00:10,292 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:10,302 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 08:00:10,302 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:10,352 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 08:00:10,352 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 08:00:10,356 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 08:00:10,356 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret8=0} Honda state: {f91_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:10,396 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 08:00:10,396 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 08:00:10,399 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 08:00:10,399 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret7=0} Honda state: {f91_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:00:10,427 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 08:00:10,427 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:00:10,467 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 08:00:10,467 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:22,524 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2020-10-20 08:00:22,528 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 08:00:22,529 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 08:00:22,529 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 08:00:22,529 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 08:00:22,529 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 08:00:22,529 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:22,529 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 08:00:22,529 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 08:00:22,529 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration3_Loop [2020-10-20 08:00:22,529 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 08:00:22,529 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 08:00:22,531 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 08:00:22,534 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 08:00:22,535 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 08:00:22,538 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 08:00:22,585 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 08:00:22,585 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:00:22,595 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 08:00:22,598 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:00:22,598 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:00:22,598 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:00:22,598 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:00:22,598 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:00:22,600 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:00:22,600 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:22,603 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:22,641 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 08:00:22,643 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:00:22,643 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:00:22,644 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:00:22,644 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:00:22,644 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:00:22,645 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:00:22,646 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:00:22,648 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:22,684 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 08:00:22,686 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:00:22,686 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:00:22,686 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:00:22,686 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:00:22,686 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:00:22,687 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:00:22,687 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:00:22,689 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:22,716 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 08:00:22,717 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:00:22,717 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:00:22,718 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:00:22,718 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:00:22,718 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:00:22,719 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:00:22,719 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:00:22,723 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 08:00:22,735 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 08:00:22,735 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:00:22,739 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 08:00:22,739 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 08:00:22,739 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 08:00:22,740 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_~x) = -2*f91_~x + 189 Supporting invariants [] Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:22,763 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 08:00:22,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:22,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 08:00:22,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:22,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 08:00:22,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:22,937 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 08:00:22,938 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2020-10-20 08:00:22,938 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand 5 states. [2020-10-20 08:00:23,028 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 43 states and 59 transitions. Complement of second has 13 states. [2020-10-20 08:00:23,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-20 08:00:23,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-20 08:00:23,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2020-10-20 08:00:23,029 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-20 08:00:23,029 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:23,030 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 08:00:23,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:23,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:23,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 08:00:23,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:23,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 08:00:23,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:23,165 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 08:00:23,166 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2020-10-20 08:00:23,166 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand 5 states. [2020-10-20 08:00:23,252 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 43 states and 59 transitions. Complement of second has 13 states. [2020-10-20 08:00:23,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-20 08:00:23,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-20 08:00:23,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2020-10-20 08:00:23,256 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-20 08:00:23,256 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:23,256 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 08:00:23,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:23,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 08:00:23,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:23,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 08:00:23,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:23,387 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 08:00:23,388 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2020-10-20 08:00:23,388 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand 5 states. [2020-10-20 08:00:23,511 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 71 states and 100 transitions. Complement of second has 16 states. [2020-10-20 08:00:23,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-20 08:00:23,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-20 08:00:23,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 19 transitions. [2020-10-20 08:00:23,513 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-20 08:00:23,514 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:23,514 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 16 letters. Loop has 3 letters. [2020-10-20 08:00:23,514 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:23,514 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 6 letters. [2020-10-20 08:00:23,515 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:23,515 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 71 states and 100 transitions. [2020-10-20 08:00:23,519 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-10-20 08:00:23,522 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 71 states to 48 states and 74 transitions. [2020-10-20 08:00:23,522 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2020-10-20 08:00:23,522 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2020-10-20 08:00:23,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 74 transitions. [2020-10-20 08:00:23,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 08:00:23,523 INFO L691 BuchiCegarLoop]: Abstraction has 48 states and 74 transitions. [2020-10-20 08:00:23,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 74 transitions. [2020-10-20 08:00:23,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-10-20 08:00:23,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-20 08:00:23,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2020-10-20 08:00:23,531 INFO L714 BuchiCegarLoop]: Abstraction has 42 states and 60 transitions. [2020-10-20 08:00:23,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 08:00:23,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 08:00:23,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-20 08:00:23,535 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand 8 states. [2020-10-20 08:00:23,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 08:00:23,695 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2020-10-20 08:00:23,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 08:00:23,696 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 82 transitions. [2020-10-20 08:00:23,699 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2020-10-20 08:00:23,702 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 58 states and 75 transitions. [2020-10-20 08:00:23,702 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2020-10-20 08:00:23,703 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2020-10-20 08:00:23,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 75 transitions. [2020-10-20 08:00:23,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 08:00:23,703 INFO L691 BuchiCegarLoop]: Abstraction has 58 states and 75 transitions. [2020-10-20 08:00:23,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 75 transitions. [2020-10-20 08:00:23,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-20 08:00:23,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-20 08:00:23,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2020-10-20 08:00:23,714 INFO L714 BuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2020-10-20 08:00:23,714 INFO L594 BuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2020-10-20 08:00:23,714 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 08:00:23,714 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 57 states and 74 transitions. [2020-10-20 08:00:23,716 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2020-10-20 08:00:23,716 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:00:23,716 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:00:23,718 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-10-20 08:00:23,718 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 2, 2, 2, 2, 2, 1, 1] [2020-10-20 08:00:23,718 INFO L794 eck$LassoCheckResult]: Stem: 839#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 837#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 838#L28 call main_#t~ret10 := f91(main_~x~0);< 851#f91ENTRY ~x := #in~x; 883#L18 assume !(~x > 100); 866#L21 call #t~ret7 := f91(11 + ~x);< 867#f91ENTRY ~x := #in~x; 876#L18 assume !(~x > 100); 872#L21 call #t~ret7 := f91(11 + ~x);< 874#f91ENTRY ~x := #in~x; 877#L18 assume ~x > 100;#res := ~x - 10; 875#f91FINAL assume true; 873#f91EXIT >#29#return; 849#L21-1 call #t~ret8 := f91(#t~ret7);< 861#f91ENTRY ~x := #in~x; 891#L18 assume ~x > 100;#res := ~x - 10; 890#f91FINAL assume true; 887#f91EXIT >#31#return; 868#L21-2 #res := #t~ret8;havoc #t~ret7;havoc #t~ret8; 885#f91FINAL assume true; 884#f91EXIT >#29#return; 853#L21-1 call #t~ret8 := f91(#t~ret7);< 882#f91ENTRY [2020-10-20 08:00:23,719 INFO L796 eck$LassoCheckResult]: Loop: 882#f91ENTRY ~x := #in~x; 879#L18 assume !(~x > 100); 841#L21 call #t~ret7 := f91(11 + ~x);< 865#f91ENTRY ~x := #in~x; 844#L18 assume !(~x > 100); 842#L21 call #t~ret7 := f91(11 + ~x);< 878#f91ENTRY ~x := #in~x; 840#L18 assume ~x > 100;#res := ~x - 10; 843#f91FINAL assume true; 893#f91EXIT >#29#return; 846#L21-1 call #t~ret8 := f91(#t~ret7);< 859#f91ENTRY ~x := #in~x; 880#L18 assume ~x > 100;#res := ~x - 10; 881#f91FINAL assume true; 886#f91EXIT >#31#return; 868#L21-2 #res := #t~ret8;havoc #t~ret7;havoc #t~ret8; 885#f91FINAL assume true; 884#f91EXIT >#29#return; 854#L21-1 call #t~ret8 := f91(#t~ret7);< 882#f91ENTRY [2020-10-20 08:00:23,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:23,719 INFO L82 PathProgramCache]: Analyzing trace with hash -834951989, now seen corresponding path program 1 times [2020-10-20 08:00:23,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:00:23,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064384329] [2020-10-20 08:00:23,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:00:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:00:23,739 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:00:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:00:23,751 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:00:23,758 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:00:23,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:23,759 INFO L82 PathProgramCache]: Analyzing trace with hash -871747263, now seen corresponding path program 1 times [2020-10-20 08:00:23,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:00:23,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344740990] [2020-10-20 08:00:23,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:00:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:00:23,768 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:00:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:00:23,775 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:00:23,778 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:00:23,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:23,781 INFO L82 PathProgramCache]: Analyzing trace with hash 418853943, now seen corresponding path program 2 times [2020-10-20 08:00:23,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:00:23,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035276815] [2020-10-20 08:00:23,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:00:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:23,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 08:00:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:23,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 08:00:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:23,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 08:00:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:23,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-20 08:00:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:23,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 08:00:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:23,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 08:00:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:23,985 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-20 08:00:23,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035276815] [2020-10-20 08:00:23,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453441544] [2020-10-20 08:00:23,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 08:00:24,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 08:00:24,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 08:00:24,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 08:00:24,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:24,105 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-20 08:00:24,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 08:00:24,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-10-20 08:00:24,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131130812] [2020-10-20 08:00:24,360 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 08:00:24,360 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 08:00:24,361 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 08:00:24,361 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 08:00:24,361 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 08:00:24,361 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:24,361 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 08:00:24,361 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 08:00:24,361 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration4_Loop [2020-10-20 08:00:24,361 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 08:00:24,361 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 08:00:24,363 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 08:00:24,367 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 08:00:24,370 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 08:00:24,373 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 08:00:24,380 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 08:00:24,431 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 08:00:24,431 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:24,436 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 08:00:24,436 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 08:00:24,444 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 08:00:24,445 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret7=0} Honda state: {f91_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:24,475 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 08:00:24,475 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 08:00:24,478 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 08:00:24,478 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_~x=0} Honda state: {f91_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:24,503 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 08:00:24,504 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 08:00:24,506 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 08:00:24,507 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:24,533 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 08:00:24,533 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:24,562 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 08:00:24,563 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 08:00:25,267 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 08:00:25,270 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 08:00:25,270 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 08:00:25,270 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 08:00:25,270 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 08:00:25,270 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 08:00:25,270 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:25,271 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 08:00:25,271 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 08:00:25,271 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration4_Loop [2020-10-20 08:00:25,271 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 08:00:25,271 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 08:00:25,272 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 08:00:25,275 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 08:00:25,277 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 08:00:25,279 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 08:00:25,295 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 08:00:25,323 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 08:00:25,323 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:00:25,326 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 Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:25,328 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:00:25,328 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:00:25,328 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:00:25,328 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:00:25,328 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:00:25,329 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:00:25,329 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:00:25,330 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 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:25,354 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 08:00:25,355 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:00:25,355 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:00:25,355 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:00:25,356 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:00:25,356 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:00:25,356 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:00:25,356 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:00:25,364 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 38 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:25,392 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 08:00:25,394 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:00:25,394 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:00:25,394 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:00:25,395 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:00:25,395 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:00:25,400 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:00:25,400 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:00:25,402 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 39 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:25,438 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 08:00:25,441 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:00:25,441 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:00:25,441 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:00:25,441 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:00:25,441 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:00:25,442 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:00:25,442 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:00:25,446 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 08:00:25,449 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 08:00:25,449 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:25,454 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 08:00:25,454 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 08:00:25,455 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 08:00:25,455 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -1*f91_#in~x + 90 Supporting invariants [] [2020-10-20 08:00:25,477 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 08:00:25,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:25,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-20 08:00:25,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:25,561 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 08:00:25,569 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 08:00:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:25,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-20 08:00:25,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:25,837 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-20 08:00:25,838 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 9 loop predicates [2020-10-20 08:00:25,838 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand 11 states. [2020-10-20 08:00:26,322 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand 11 states. Result 125 states and 150 transitions. Complement of second has 37 states. [2020-10-20 08:00:26,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 2 stem states 10 non-accepting loop states 1 accepting loop states [2020-10-20 08:00:26,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-20 08:00:26,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 34 transitions. [2020-10-20 08:00:26,326 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 34 transitions. Stem has 22 letters. Loop has 19 letters. [2020-10-20 08:00:26,327 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:26,327 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 08:00:26,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:26,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-20 08:00:26,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:26,408 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 08:00:26,424 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 08:00:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:26,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-20 08:00:26,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-20 08:00:26,645 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 9 loop predicates [2020-10-20 08:00:26,646 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand 11 states. [2020-10-20 08:00:27,145 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand 11 states. Result 125 states and 150 transitions. Complement of second has 37 states. [2020-10-20 08:00:27,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 2 stem states 10 non-accepting loop states 1 accepting loop states [2020-10-20 08:00:27,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-20 08:00:27,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 34 transitions. [2020-10-20 08:00:27,148 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 34 transitions. Stem has 22 letters. Loop has 19 letters. [2020-10-20 08:00:27,148 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:27,148 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 08:00:27,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:27,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-20 08:00:27,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:27,236 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 08:00:27,240 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 08:00:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:27,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-20 08:00:27,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:27,493 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-20 08:00:27,494 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2020-10-20 08:00:27,494 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand 12 states. [2020-10-20 08:00:28,625 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 431 states and 531 transitions. Complement of second has 216 states. [2020-10-20 08:00:28,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 20 states 2 stem states 17 non-accepting loop states 1 accepting loop states [2020-10-20 08:00:28,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-20 08:00:28,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 49 transitions. [2020-10-20 08:00:28,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 49 transitions. Stem has 22 letters. Loop has 19 letters. [2020-10-20 08:00:28,633 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:28,633 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 49 transitions. Stem has 41 letters. Loop has 19 letters. [2020-10-20 08:00:28,635 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:28,636 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 49 transitions. Stem has 22 letters. Loop has 38 letters. [2020-10-20 08:00:28,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:28,645 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 431 states and 531 transitions. [2020-10-20 08:00:28,671 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 29 [2020-10-20 08:00:28,686 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 431 states to 203 states and 269 transitions. [2020-10-20 08:00:28,686 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 95 [2020-10-20 08:00:28,687 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2020-10-20 08:00:28,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 203 states and 269 transitions. [2020-10-20 08:00:28,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 08:00:28,687 INFO L691 BuchiCegarLoop]: Abstraction has 203 states and 269 transitions. [2020-10-20 08:00:28,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states and 269 transitions. [2020-10-20 08:00:28,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 157. [2020-10-20 08:00:28,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-20 08:00:28,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 198 transitions. [2020-10-20 08:00:28,718 INFO L714 BuchiCegarLoop]: Abstraction has 157 states and 198 transitions. [2020-10-20 08:00:28,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 08:00:28,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 08:00:28,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-20 08:00:28,719 INFO L87 Difference]: Start difference. First operand 157 states and 198 transitions. Second operand 10 states. [2020-10-20 08:00:29,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 08:00:29,035 INFO L93 Difference]: Finished difference Result 159 states and 188 transitions. [2020-10-20 08:00:29,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 08:00:29,039 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 159 states and 188 transitions. [2020-10-20 08:00:29,045 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-20 08:00:29,048 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 159 states to 104 states and 123 transitions. [2020-10-20 08:00:29,049 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 76 [2020-10-20 08:00:29,050 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2020-10-20 08:00:29,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 123 transitions. [2020-10-20 08:00:29,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 08:00:29,051 INFO L691 BuchiCegarLoop]: Abstraction has 104 states and 123 transitions. [2020-10-20 08:00:29,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 123 transitions. [2020-10-20 08:00:29,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2020-10-20 08:00:29,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-20 08:00:29,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 119 transitions. [2020-10-20 08:00:29,060 INFO L714 BuchiCegarLoop]: Abstraction has 100 states and 119 transitions. [2020-10-20 08:00:29,060 INFO L594 BuchiCegarLoop]: Abstraction has 100 states and 119 transitions. [2020-10-20 08:00:29,060 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-20 08:00:29,061 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 100 states and 119 transitions. [2020-10-20 08:00:29,062 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-20 08:00:29,062 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:00:29,063 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:00:29,064 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [7, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1] [2020-10-20 08:00:29,065 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-20 08:00:29,065 INFO L794 eck$LassoCheckResult]: Stem: 2861#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2859#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 2860#L28 call main_#t~ret10 := f91(main_~x~0);< 2873#f91ENTRY ~x := #in~x; 2865#L18 assume !(~x > 100); 2866#L21 call #t~ret7 := f91(11 + ~x);< 2886#f91ENTRY ~x := #in~x; 2906#L18 assume !(~x > 100); 2900#L21 call #t~ret7 := f91(11 + ~x);< 2904#f91ENTRY ~x := #in~x; 2907#L18 assume ~x > 100;#res := ~x - 10; 2905#f91FINAL assume true; 2903#f91EXIT >#29#return; 2899#L21-1 call #t~ret8 := f91(#t~ret7);< 2902#f91ENTRY ~x := #in~x; 2934#L18 assume ~x > 100;#res := ~x - 10; 2921#f91FINAL assume true; 2920#f91EXIT >#31#return; 2918#L21-2 #res := #t~ret8;havoc #t~ret7;havoc #t~ret8; 2917#f91FINAL assume true; 2915#f91EXIT >#29#return; 2909#L21-1 call #t~ret8 := f91(#t~ret7);< 2914#f91ENTRY ~x := #in~x; 2912#L18 assume !(~x > 100); 2880#L21 call #t~ret7 := f91(11 + ~x);< 2888#f91ENTRY ~x := #in~x; 2889#L18 assume !(~x > 100); 2879#L21 call #t~ret7 := f91(11 + ~x);< 2908#f91ENTRY ~x := #in~x; 2956#L18 assume ~x > 100;#res := ~x - 10; 2954#f91FINAL assume true; 2890#f91EXIT >#29#return; 2878#L21-1 [2020-10-20 08:00:29,065 INFO L796 eck$LassoCheckResult]: Loop: 2878#L21-1 call #t~ret8 := f91(#t~ret7);< 2881#f91ENTRY ~x := #in~x; 2916#L18 assume !(~x > 100); 2884#L21 call #t~ret7 := f91(11 + ~x);< 2885#f91ENTRY ~x := #in~x; 2957#L18 assume ~x > 100;#res := ~x - 10; 2955#f91FINAL assume true; 2952#f91EXIT >#29#return; 2878#L21-1 [2020-10-20 08:00:29,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:29,066 INFO L82 PathProgramCache]: Analyzing trace with hash 2083076242, now seen corresponding path program 3 times [2020-10-20 08:00:29,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:00:29,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067467586] [2020-10-20 08:00:29,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:00:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:29,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 08:00:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:29,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 08:00:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:29,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 08:00:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:29,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-20 08:00:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:29,163 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-20 08:00:29,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067467586] [2020-10-20 08:00:29,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725019600] [2020-10-20 08:00:29,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 08:00:29,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-10-20 08:00:29,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 08:00:29,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 08:00:29,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:29,231 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-20 08:00:29,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 08:00:29,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 9 [2020-10-20 08:00:29,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884298208] [2020-10-20 08:00:29,232 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 08:00:29,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:29,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1767505954, now seen corresponding path program 2 times [2020-10-20 08:00:29,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:00:29,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796660730] [2020-10-20 08:00:29,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:00:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:00:29,237 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:00:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:00:29,239 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:00:29,240 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:00:29,342 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 08:00:29,342 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 08:00:29,343 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 08:00:29,343 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 08:00:29,343 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 08:00:29,343 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:29,343 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 08:00:29,343 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 08:00:29,343 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration5_Loop [2020-10-20 08:00:29,344 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 08:00:29,344 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 08:00:29,345 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 08:00:29,346 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 08:00:29,358 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 08:00:29,403 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 08:00:29,403 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 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 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:29,409 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 08:00:29,409 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 08:00:29,412 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 08:00:29,413 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret8=0} Honda state: {f91_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:29,439 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 08:00:29,439 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 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 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:29,473 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 08:00:29,473 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 08:00:41,525 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2020-10-20 08:00:41,529 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 08:00:41,529 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 08:00:41,530 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 08:00:41,530 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 08:00:41,530 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 08:00:41,530 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:41,530 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 08:00:41,530 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 08:00:41,530 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration5_Loop [2020-10-20 08:00:41,530 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 08:00:41,530 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 08:00:41,531 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 08:00:41,533 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 08:00:41,543 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 08:00:41,589 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 08:00:41,589 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 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 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:41,606 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 08:00:41,612 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:00:41,612 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:00:41,613 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:00:41,613 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:00:41,613 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:00:41,613 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:00:41,613 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:00:41,615 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:00:41,658 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 08:00:41,663 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:00:41,663 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:00:41,663 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:00:41,663 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:00:41,664 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:00:41,669 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:00:41,672 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:41,678 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 08:00:41,685 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 08:00:41,685 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:00:41,693 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 08:00:41,694 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 08:00:41,694 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 08:00:41,694 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret7) = -2*f91_#t~ret7 + 201 Supporting invariants [] Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:41,735 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 08:00:41,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:41,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-20 08:00:41,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:41,818 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 08:00:41,821 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 08:00:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:41,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 08:00:41,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:41,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 08:00:41,933 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2020-10-20 08:00:41,934 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24 Second operand 9 states. [2020-10-20 08:00:42,156 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 139 states and 161 transitions. Complement of second has 24 states. [2020-10-20 08:00:42,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2020-10-20 08:00:42,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-20 08:00:42,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2020-10-20 08:00:42,159 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 32 letters. Loop has 8 letters. [2020-10-20 08:00:42,159 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:42,159 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 08:00:42,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:42,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-20 08:00:42,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:42,239 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 08:00:42,241 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 08:00:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:42,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 08:00:42,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:42,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 08:00:42,349 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2020-10-20 08:00:42,349 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24 Second operand 9 states. [2020-10-20 08:00:42,573 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 139 states and 161 transitions. Complement of second has 24 states. [2020-10-20 08:00:42,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2020-10-20 08:00:42,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-20 08:00:42,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2020-10-20 08:00:42,576 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 32 letters. Loop has 8 letters. [2020-10-20 08:00:42,576 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:42,576 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 08:00:42,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:42,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-20 08:00:42,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:42,654 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 08:00:42,656 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 08:00:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:42,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 08:00:42,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:42,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 08:00:42,773 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2020-10-20 08:00:42,773 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24 Second operand 9 states. [2020-10-20 08:00:43,009 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 181 states and 211 transitions. Complement of second has 27 states. [2020-10-20 08:00:43,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2020-10-20 08:00:43,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-20 08:00:43,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 21 transitions. [2020-10-20 08:00:43,013 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 32 letters. Loop has 8 letters. [2020-10-20 08:00:43,013 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:43,013 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 40 letters. Loop has 8 letters. [2020-10-20 08:00:43,014 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:43,014 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 32 letters. Loop has 16 letters. [2020-10-20 08:00:43,015 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:43,015 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 181 states and 211 transitions. [2020-10-20 08:00:43,019 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 08:00:43,020 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 181 states to 0 states and 0 transitions. [2020-10-20 08:00:43,020 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 08:00:43,020 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 08:00:43,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 08:00:43,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 08:00:43,020 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:00:43,020 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:00:43,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 08:00:43,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 08:00:43,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-20 08:00:43,021 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 9 states. [2020-10-20 08:00:43,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 08:00:43,021 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-10-20 08:00:43,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 08:00:43,021 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-10-20 08:00:43,022 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 08:00:43,022 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 08:00:43,022 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 08:00:43,022 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 08:00:43,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 08:00:43,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 08:00:43,022 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:00:43,022 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:00:43,022 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:00:43,023 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-20 08:00:43,023 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 08:00:43,023 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 08:00:43,023 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 08:00:43,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 08:00:43 BoogieIcfgContainer [2020-10-20 08:00:43,031 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 08:00:43,032 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 08:00:43,032 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 08:00:43,032 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 08:00:43,033 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:59:53" (3/4) ... [2020-10-20 08:00:43,037 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 08:00:43,038 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 08:00:43,041 INFO L168 Benchmark]: Toolchain (without parser) took 50150.80 ms. Allocated memory was 35.1 MB in the beginning and 88.6 MB in the end (delta: 53.5 MB). Free memory was 12.7 MB in the beginning and 33.5 MB in the end (delta: -20.8 MB). Peak memory consumption was 32.7 MB. Max. memory is 14.3 GB. [2020-10-20 08:00:43,043 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 34.1 MB. Free memory was 19.1 MB in the beginning and 19.1 MB in the end (delta: 43.3 kB). Peak memory consumption was 43.3 kB. Max. memory is 14.3 GB. [2020-10-20 08:00:43,048 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.13 ms. Allocated memory was 35.1 MB in the beginning and 43.5 MB in the end (delta: 8.4 MB). Free memory was 11.9 MB in the beginning and 24.6 MB in the end (delta: -12.7 MB). Peak memory consumption was 10.9 MB. Max. memory is 14.3 GB. [2020-10-20 08:00:43,055 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.20 ms. Allocated memory is still 43.5 MB. Free memory was 24.6 MB in the beginning and 23.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 08:00:43,056 INFO L168 Benchmark]: Boogie Preprocessor took 24.17 ms. Allocated memory is still 43.5 MB. Free memory was 23.0 MB in the beginning and 21.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 08:00:43,058 INFO L168 Benchmark]: RCFGBuilder took 313.20 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 21.8 MB in the beginning and 21.6 MB in the end (delta: 241.3 kB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. [2020-10-20 08:00:43,059 INFO L168 Benchmark]: BuchiAutomizer took 49403.93 ms. Allocated memory was 45.6 MB in the beginning and 88.6 MB in the end (delta: 43.0 MB). Free memory was 21.6 MB in the beginning and 34.7 MB in the end (delta: -13.1 MB). Peak memory consumption was 29.9 MB. Max. memory is 14.3 GB. [2020-10-20 08:00:43,063 INFO L168 Benchmark]: Witness Printer took 5.76 ms. Allocated memory is still 88.6 MB. Free memory was 34.7 MB in the beginning and 33.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 08:00:43,071 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 34.1 MB. Free memory was 19.1 MB in the beginning and 19.1 MB in the end (delta: 43.3 kB). Peak memory consumption was 43.3 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 352.13 ms. Allocated memory was 35.1 MB in the beginning and 43.5 MB in the end (delta: 8.4 MB). Free memory was 11.9 MB in the beginning and 24.6 MB in the end (delta: -12.7 MB). Peak memory consumption was 10.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 40.20 ms. Allocated memory is still 43.5 MB. Free memory was 24.6 MB in the beginning and 23.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 24.17 ms. Allocated memory is still 43.5 MB. Free memory was 23.0 MB in the beginning and 21.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 313.20 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 21.8 MB in the beginning and 21.6 MB in the end (delta: 241.3 kB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 49403.93 ms. Allocated memory was 45.6 MB in the beginning and 88.6 MB in the end (delta: 43.0 MB). Free memory was 21.6 MB in the beginning and 34.7 MB in the end (delta: -13.1 MB). Peak memory consumption was 29.9 MB. Max. memory is 14.3 GB. * Witness Printer took 5.76 ms. Allocated memory is still 88.6 MB. Free memory was 34.7 MB in the beginning and 33.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. 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 8 terminating modules (3 trivial, 2 deterministic, 3 nondeterministic). One deterministic module has affine ranking function -2 * \old(x) + 211 and consists of 4 locations. One deterministic module has affine ranking function -2 * aux-f91(x+11)-aux + 201 and consists of 8 locations. One nondeterministic module has affine ranking function -2 * x + 189 and consists of 6 locations. One nondeterministic module has affine ranking function -1 * \old(x) + 90 and consists of 20 locations. One nondeterministic module has affine ranking function -2 * aux-f91(x+11)-aux + 201 and consists of 8 locations. 3 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 49.3s and 6 iterations. TraceHistogramMax:7. Analysis of lassos took 42.2s. Construction of modules took 1.0s. Büchi inclusion checks took 5.6s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 65 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 100 states and ocurred in iteration 4. Nontrivial modules had stage [2, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 12/24 HoareTripleCheckerStatistics: 167 SDtfs, 278 SDslu, 186 SDs, 0 SdLazy, 795 SolverSat, 216 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf89 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq166 hnf92 smp100 dnf100 smp100 tf109 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 34ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 12 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 3 LassoNonterminationAnalysisTime: 38.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...