./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 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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 0.1.25-906a4fb [2020-10-19 20:06:50,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 20:06:50,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 20:06:50,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 20:06:50,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 20:06:50,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 20:06:50,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 20:06:50,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 20:06:50,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 20:06:50,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 20:06:50,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 20:06:50,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 20:06:50,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 20:06:50,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 20:06:50,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 20:06:50,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 20:06:50,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 20:06:50,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 20:06:50,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 20:06:50,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 20:06:50,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 20:06:50,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 20:06:50,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 20:06:50,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 20:06:50,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 20:06:50,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 20:06:50,279 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 20:06:50,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 20:06:50,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 20:06:50,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 20:06:50,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 20:06:50,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 20:06:50,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 20:06:50,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 20:06:50,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 20:06:50,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 20:06:50,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 20:06:50,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 20:06:50,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 20:06:50,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 20:06:50,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 20:06:50,289 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-19 20:06:50,315 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 20:06:50,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 20:06:50,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 20:06:50,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 20:06:50,317 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 20:06:50,318 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 20:06:50,318 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 20:06:50,318 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 20:06:50,319 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 20:06:50,319 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 20:06:50,319 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 20:06:50,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 20:06:50,320 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 20:06:50,320 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 20:06:50,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 20:06:50,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 20:06:50,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 20:06:50,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 20:06:50,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 20:06:50,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 20:06:50,322 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 20:06:50,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 20:06:50,322 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 20:06:50,323 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 20:06:50,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 20:06:50,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 20:06:50,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 20:06:50,324 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 20:06:50,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 20:06:50,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 20:06:50,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 20:06:50,325 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 20:06:50,326 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 20:06:50,326 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 [2020-10-19 20:06:50,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 20:06:50,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 20:06:50,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 20:06:50,694 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 20:06:50,696 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 20:06:50,697 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/McCarthy91-1.c [2020-10-19 20:06:50,775 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cbb818e8/120990a27d1e425c9d6d06e7076260ff/FLAGac588b263 [2020-10-19 20:06:51,229 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 20:06:51,230 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/McCarthy91-1.c [2020-10-19 20:06:51,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cbb818e8/120990a27d1e425c9d6d06e7076260ff/FLAGac588b263 [2020-10-19 20:06:51,596 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cbb818e8/120990a27d1e425c9d6d06e7076260ff [2020-10-19 20:06:51,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 20:06:51,607 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 20:06:51,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 20:06:51,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 20:06:51,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 20:06:51,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 08:06:51" (1/1) ... [2020-10-19 20:06:51,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2301feac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:06:51, skipping insertion in model container [2020-10-19 20:06:51,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 08:06:51" (1/1) ... [2020-10-19 20:06:51,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 20:06:51,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 20:06:51,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 20:06:51,837 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 20:06:51,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 20:06:51,871 INFO L208 MainTranslator]: Completed translation [2020-10-19 20:06:51,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:06:51 WrapperNode [2020-10-19 20:06:51,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 20:06:51,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 20:06:51,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 20:06:51,873 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 20:06:51,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:06:51" (1/1) ... [2020-10-19 20:06:51,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:06:51" (1/1) ... [2020-10-19 20:06:51,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 20:06:51,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 20:06:51,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 20:06:51,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 20:06:51,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:06:51" (1/1) ... [2020-10-19 20:06:51,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:06:51" (1/1) ... [2020-10-19 20:06:51,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:06:51" (1/1) ... [2020-10-19 20:06:51,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:06:51" (1/1) ... [2020-10-19 20:06:51,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:06:51" (1/1) ... [2020-10-19 20:06:51,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:06:51" (1/1) ... [2020-10-19 20:06:51,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:06:51" (1/1) ... [2020-10-19 20:06:51,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 20:06:51,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 20:06:51,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 20:06:51,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 20:06:51,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:06:51" (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 [2020-10-19 20:06:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 20:06:52,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 20:06:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 20:06:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 20:06:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2020-10-19 20:06:52,067 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2020-10-19 20:06:52,289 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 20:06:52,289 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-19 20:06:52,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 08:06:52 BoogieIcfgContainer [2020-10-19 20:06:52,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 20:06:52,295 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 20:06:52,295 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 20:06:52,299 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 20:06:52,300 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 20:06:52,300 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 08:06:51" (1/3) ... [2020-10-19 20:06:52,302 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@927b3c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 08:06:52, skipping insertion in model container [2020-10-19 20:06:52,302 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 20:06:52,303 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:06:51" (2/3) ... [2020-10-19 20:06:52,303 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@927b3c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 08:06:52, skipping insertion in model container [2020-10-19 20:06:52,304 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 20:06:52,304 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 08:06:52" (3/3) ... [2020-10-19 20:06:52,306 INFO L373 chiAutomizerObserver]: Analyzing ICFG McCarthy91-1.c [2020-10-19 20:06:52,379 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 20:06:52,380 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 20:06:52,380 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 20:06:52,380 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 20:06:52,381 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 20:06:52,381 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 20:06:52,381 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 20:06:52,382 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 20:06:52,404 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-19 20:06:52,440 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 20:06:52,440 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:06:52,440 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:06:52,457 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-19 20:06:52,457 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 20:06:52,458 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 20:06:52,458 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-19 20:06:52,462 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 20:06:52,462 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:06:52,463 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:06:52,463 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-19 20:06:52,463 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 20:06:52,471 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 11#L-1true havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 6#L28true call main_#t~ret10 := f91(main_~x~0);< 18#f91ENTRYtrue [2020-10-19 20:06:52,472 INFO L796 eck$LassoCheckResult]: Loop: 18#f91ENTRYtrue ~x := #in~x; 5#L18true assume !(~x > 100); 19#L21true call #t~ret7 := f91(11 + ~x);< 18#f91ENTRYtrue [2020-10-19 20:06:52,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:06:52,479 INFO L82 PathProgramCache]: Analyzing trace with hash 29879, now seen corresponding path program 1 times [2020-10-19 20:06:52,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:06:52,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886520577] [2020-10-19 20:06:52,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:06:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:06:52,612 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:06:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:06:52,630 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:06:52,655 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:06:52,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:06:52,657 INFO L82 PathProgramCache]: Analyzing trace with hash 46807, now seen corresponding path program 1 times [2020-10-19 20:06:52,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:06:52,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431874631] [2020-10-19 20:06:52,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:06:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:06:52,664 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:06:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:06:52,667 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:06:52,669 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:06:52,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:06:52,672 INFO L82 PathProgramCache]: Analyzing trace with hash 890142305, now seen corresponding path program 1 times [2020-10-19 20:06:52,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:06:52,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63825180] [2020-10-19 20:06:52,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:06:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:06:52,690 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:06:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:06:52,704 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:06:52,709 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:06:52,809 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:06:52,810 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:06:52,811 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:06:52,811 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:06:52,811 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 20:06:52,811 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:06:52,811 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:06:52,812 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:06:52,812 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration1_Loop [2020-10-19 20:06:52,812 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:06:52,812 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:06:52,836 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:06:52,847 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:06:52,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:06:52,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:06:52,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:06:52,933 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:06:52,934 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:06:52,949 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:06:52,949 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:06:52,962 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:06:52,963 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 [2020-10-19 20:06:52,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:06:52,992 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:06:53,002 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:06:53,003 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 [2020-10-19 20:06:53,030 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:06:53,030 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:06:53,042 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:06:53,042 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 [2020-10-19 20:06:53,069 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:06:53,070 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:06:53,074 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:06:53,074 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 [2020-10-19 20:06:53,100 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:06:53,101 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 [2020-10-19 20:06:53,134 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 20:06:53,134 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:06:54,096 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 20:06:54,099 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:06:54,099 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:06:54,099 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:06:54,100 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:06:54,100 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 20:06:54,100 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:06:54,100 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:06:54,100 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:06:54,100 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration1_Loop [2020-10-19 20:06:54,101 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:06:54,101 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:06:54,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:06:54,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:06:54,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:06:54,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:06:54,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:06:54,191 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:06:54,197 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) [2020-10-19 20:06:54,222 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 [2020-10-19 20:06:54,226 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:06:54,227 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:06:54,228 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:06:54,228 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:06:54,228 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:06:54,231 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:06:54,231 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:06:54,237 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) [2020-10-19 20:06:54,278 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:06:54,280 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:06:54,280 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:06:54,281 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:06:54,281 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:06:54,281 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:06:54,282 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:06:54,282 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:06:54,284 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 [2020-10-19 20:06:54,326 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 [2020-10-19 20:06:54,328 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:06:54,329 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:06:54,329 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:06:54,329 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:06:54,329 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:06:54,330 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:06:54,330 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:06:54,333 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 [2020-10-19 20:06:54,365 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 [2020-10-19 20:06:54,367 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:06:54,367 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:06:54,367 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:06:54,368 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:06:54,368 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:06:54,369 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:06:54,369 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:06:54,377 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 [2020-10-19 20:06:54,411 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 [2020-10-19 20:06:54,413 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:06:54,413 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:06:54,413 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:06:54,413 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:06:54,413 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:06:54,415 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:06:54,415 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:06:54,419 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 20:06:54,430 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 20:06:54,431 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) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:06:54,437 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 20:06:54,437 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 20:06:54,437 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 20:06:54,438 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -2*f91_#in~x + 211 Supporting invariants [] [2020-10-19 20:06:54,464 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 20:06:54,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:06:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:06:54,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 20:06:54,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:06:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:06:54,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 20:06:54,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:06:54,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:06:54,624 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 [2020-10-19 20:06:54,625 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 4 states. [2020-10-19 20:06:54,780 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. [2020-10-19 20:06:54,781 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 [2020-10-19 20:06:54,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-19 20:06:54,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-10-19 20:06:54,787 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2020-10-19 20:06:54,789 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:06:54,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2020-10-19 20:06:54,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:06:54,791 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2020-10-19 20:06:54,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:06:54,792 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 43 transitions. [2020-10-19 20:06:54,797 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 20:06:54,806 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 19 states and 25 transitions. [2020-10-19 20:06:54,808 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-10-19 20:06:54,809 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-10-19 20:06:54,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2020-10-19 20:06:54,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:06:54,813 INFO L691 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2020-10-19 20:06:54,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2020-10-19 20:06:54,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2020-10-19 20:06:54,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-19 20:06:54,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2020-10-19 20:06:54,847 INFO L714 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2020-10-19 20:06:54,848 INFO L594 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2020-10-19 20:06:54,848 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 20:06:54,848 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2020-10-19 20:06:54,849 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 20:06:54,850 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:06:54,850 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:06:54,851 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:06:54,851 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-19 20:06:54,852 INFO L794 eck$LassoCheckResult]: Stem: 107#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 105#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 106#L28 call main_#t~ret10 := f91(main_~x~0);< 116#f91ENTRY ~x := #in~x; 111#L18 assume !(~x > 100); 109#L21 call #t~ret7 := f91(11 + ~x);< 119#f91ENTRY ~x := #in~x; 108#L18 assume ~x > 100;#res := ~x - 10; 110#f91FINAL assume true; 117#f91EXIT >#29#return; 114#L21-1 [2020-10-19 20:06:54,852 INFO L796 eck$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 [2020-10-19 20:06:54,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:06:54,852 INFO L82 PathProgramCache]: Analyzing trace with hash -218206616, now seen corresponding path program 1 times [2020-10-19 20:06:54,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:06:54,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815575155] [2020-10-19 20:06:54,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:06:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:06:54,871 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:06:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:06:54,886 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:06:54,893 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:06:54,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:06:54,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1767505954, now seen corresponding path program 1 times [2020-10-19 20:06:54,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:06:54,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298187150] [2020-10-19 20:06:54,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:06:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:06:54,903 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:06:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:06:54,908 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:06:54,911 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:06:54,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:06:54,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1919740023, now seen corresponding path program 1 times [2020-10-19 20:06:54,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:06:54,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150644739] [2020-10-19 20:06:54,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:06:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:06:54,934 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:06:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:06:54,955 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:06:54,964 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:06:55,095 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:06:55,096 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:06:55,096 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:06:55,096 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:06:55,096 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 20:06:55,096 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:06:55,097 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:06:55,097 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:06:55,097 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration2_Loop [2020-10-19 20:06:55,098 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:06:55,098 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:06:55,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:06:55,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:06:55,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:06:55,171 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:06:55,171 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) [2020-10-19 20:06:55,176 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:06:55,176 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 [2020-10-19 20:06:55,181 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:06:55,182 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) [2020-10-19 20:06:55,232 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:06:55,232 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) [2020-10-19 20:06:55,305 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 20:06:55,306 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:07,362 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2020-10-19 20:07:07,367 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:07,367 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:07,367 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:07,368 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:07,368 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 20:07:07,368 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:07,368 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:07,368 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:07,368 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration2_Loop [2020-10-19 20:07:07,368 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:07,368 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:07,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:07,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:07,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:07,438 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:07,439 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) [2020-10-19 20:07:07,453 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 [2020-10-19 20:07:07,456 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:07,456 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:07,457 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:07,457 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:07,457 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:07,459 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:07,459 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:07,462 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) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:07,520 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 [2020-10-19 20:07:07,523 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:07,523 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:07,523 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:07,523 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:07,524 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:07,527 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:07,527 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:07,532 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 20:07:07,537 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 20:07:07,537 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) [2020-10-19 20:07:07,553 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 20:07:07,554 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 20:07:07,554 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 20:07:07,554 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:07,600 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 20:07:07,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:07,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 20:07:07,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:07,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-19 20:07:07,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:07,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:07:07,860 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 [2020-10-19 20:07:07,860 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6 Second operand 9 states. [2020-10-19 20:07:08,142 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. [2020-10-19 20:07:08,143 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 [2020-10-19 20:07:08,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-19 20:07:08,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2020-10-19 20:07:08,147 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 8 letters. [2020-10-19 20:07:08,147 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:08,147 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 18 letters. Loop has 8 letters. [2020-10-19 20:07:08,148 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:08,148 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 16 letters. [2020-10-19 20:07:08,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:08,149 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 73 transitions. [2020-10-19 20:07:08,155 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-10-19 20:07:08,159 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 42 states and 62 transitions. [2020-10-19 20:07:08,160 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2020-10-19 20:07:08,160 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2020-10-19 20:07:08,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 62 transitions. [2020-10-19 20:07:08,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:08,161 INFO L691 BuchiCegarLoop]: Abstraction has 42 states and 62 transitions. [2020-10-19 20:07:08,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 62 transitions. [2020-10-19 20:07:08,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2020-10-19 20:07:08,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-19 20:07:08,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2020-10-19 20:07:08,171 INFO L714 BuchiCegarLoop]: Abstraction has 36 states and 51 transitions. [2020-10-19 20:07:08,171 INFO L594 BuchiCegarLoop]: Abstraction has 36 states and 51 transitions. [2020-10-19 20:07:08,171 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-19 20:07:08,172 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 51 transitions. [2020-10-19 20:07:08,173 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-10-19 20:07:08,174 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:07:08,174 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:07:08,174 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:08,175 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 20:07:08,175 INFO L794 eck$LassoCheckResult]: Stem: 293#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 291#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 292#L28 call main_#t~ret10 := f91(main_~x~0);< 298#f91ENTRY ~x := #in~x; 296#L18 assume !(~x > 100); 297#L21 call #t~ret7 := f91(11 + ~x);< 316#f91ENTRY ~x := #in~x; 317#L18 assume ~x > 100;#res := ~x - 10; 308#f91FINAL assume true; 309#f91EXIT >#29#return; 301#L21-1 call #t~ret8 := f91(#t~ret7);< 314#f91ENTRY ~x := #in~x; 326#L18 assume !(~x > 100); 295#L21 [2020-10-19 20:07:08,175 INFO L796 eck$LassoCheckResult]: Loop: 295#L21 call #t~ret7 := f91(11 + ~x);< 315#f91ENTRY ~x := #in~x; 294#L18 assume !(~x > 100); 295#L21 [2020-10-19 20:07:08,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:08,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1987218266, now seen corresponding path program 2 times [2020-10-19 20:07:08,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:08,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691267964] [2020-10-19 20:07:08,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:08,193 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:08,208 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:08,214 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:07:08,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:08,215 INFO L82 PathProgramCache]: Analyzing trace with hash 57247, now seen corresponding path program 2 times [2020-10-19 20:07:08,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:08,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591416409] [2020-10-19 20:07:08,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:08,220 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:08,223 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:08,224 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:07:08,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:08,225 INFO L82 PathProgramCache]: Analyzing trace with hash -609818202, now seen corresponding path program 3 times [2020-10-19 20:07:08,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:08,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941576242] [2020-10-19 20:07:08,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:08,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-19 20:07:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:08,412 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 20:07:08,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941576242] [2020-10-19 20:07:08,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 20:07:08,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 20:07:08,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288110808] [2020-10-19 20:07:08,455 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:08,456 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:08,456 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:08,456 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:08,456 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 20:07:08,456 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:08,456 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:08,456 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:08,457 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration3_Loop [2020-10-19 20:07:08,457 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:08,457 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:08,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:08,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:08,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:08,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:08,508 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:08,509 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) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:08,562 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:08,563 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:08,567 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:08,568 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 [2020-10-19 20:07:08,612 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:08,612 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:08,616 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:08,616 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) [2020-10-19 20:07:08,643 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:08,643 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:08,646 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:08,646 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) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:08,675 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:08,675 INFO L160 nArgumentSynthesizer]: Using integer mode. 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) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:08,714 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 20:07:08,714 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:20,771 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2020-10-19 20:07:20,774 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:20,775 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:20,775 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:20,775 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:20,775 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 20:07:20,775 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:20,775 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:20,775 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:20,775 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration3_Loop [2020-10-19 20:07:20,776 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:20,776 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:20,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:20,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:20,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:20,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:20,831 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:20,832 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) [2020-10-19 20:07:20,839 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 [2020-10-19 20:07:20,844 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:20,844 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:20,844 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:20,844 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:20,844 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:20,847 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:20,847 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 [2020-10-19 20:07:20,850 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 [2020-10-19 20:07:20,887 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 [2020-10-19 20:07:20,888 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:20,889 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:20,889 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:20,889 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:20,889 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:20,890 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:20,890 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:20,891 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 [2020-10-19 20:07:20,915 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 [2020-10-19 20:07:20,916 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:20,916 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:20,916 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:20,916 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:20,917 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:20,917 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:20,917 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:20,919 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 [2020-10-19 20:07:20,942 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 [2020-10-19 20:07:20,946 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:20,946 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:20,946 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:20,946 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:20,947 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:20,948 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:20,948 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:20,951 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 20:07:20,953 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 20:07:20,954 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) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:20,956 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 20:07:20,956 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 20:07:20,957 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 20:07:20,957 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_~x) = -2*f91_~x + 189 Supporting invariants [] [2020-10-19 20:07:20,979 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 20:07:20,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:21,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 20:07:21,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:21,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 20:07:21,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:21,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:07:21,130 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 [2020-10-19 20:07:21,130 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand 5 states. [2020-10-19 20:07:21,222 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. [2020-10-19 20:07:21,223 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 [2020-10-19 20:07:21,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-19 20:07:21,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2020-10-19 20:07:21,224 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-19 20:07:21,225 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:21,225 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 20:07:21,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:21,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 20:07:21,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:21,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 20:07:21,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:21,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:07:21,358 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 [2020-10-19 20:07:21,359 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand 5 states. [2020-10-19 20:07:21,459 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. [2020-10-19 20:07:21,460 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 [2020-10-19 20:07:21,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-19 20:07:21,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2020-10-19 20:07:21,460 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-19 20:07:21,461 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:21,461 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 20:07:21,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:21,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 20:07:21,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:21,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 20:07:21,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:21,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:07:21,583 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 [2020-10-19 20:07:21,583 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand 5 states. [2020-10-19 20:07:21,689 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. [2020-10-19 20:07:21,690 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 [2020-10-19 20:07:21,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-19 20:07:21,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 19 transitions. [2020-10-19 20:07:21,691 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-19 20:07:21,692 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:21,692 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 16 letters. Loop has 3 letters. [2020-10-19 20:07:21,692 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:21,692 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 6 letters. [2020-10-19 20:07:21,693 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:21,693 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 71 states and 100 transitions. [2020-10-19 20:07:21,699 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-10-19 20:07:21,702 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 71 states to 48 states and 74 transitions. [2020-10-19 20:07:21,702 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2020-10-19 20:07:21,702 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2020-10-19 20:07:21,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 74 transitions. [2020-10-19 20:07:21,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:21,703 INFO L691 BuchiCegarLoop]: Abstraction has 48 states and 74 transitions. [2020-10-19 20:07:21,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 74 transitions. [2020-10-19 20:07:21,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-10-19 20:07:21,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-19 20:07:21,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2020-10-19 20:07:21,710 INFO L714 BuchiCegarLoop]: Abstraction has 42 states and 60 transitions. [2020-10-19 20:07:21,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 20:07:21,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 20:07:21,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-19 20:07:21,715 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand 8 states. [2020-10-19 20:07:21,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 20:07:21,837 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2020-10-19 20:07:21,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 20:07:21,838 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 82 transitions. [2020-10-19 20:07:21,841 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2020-10-19 20:07:21,844 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 58 states and 75 transitions. [2020-10-19 20:07:21,844 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2020-10-19 20:07:21,844 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2020-10-19 20:07:21,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 75 transitions. [2020-10-19 20:07:21,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:21,845 INFO L691 BuchiCegarLoop]: Abstraction has 58 states and 75 transitions. [2020-10-19 20:07:21,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 75 transitions. [2020-10-19 20:07:21,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-19 20:07:21,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-19 20:07:21,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2020-10-19 20:07:21,852 INFO L714 BuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2020-10-19 20:07:21,852 INFO L594 BuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2020-10-19 20:07:21,852 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-19 20:07:21,853 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 57 states and 74 transitions. [2020-10-19 20:07:21,854 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2020-10-19 20:07:21,854 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:07:21,854 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:07:21,856 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-10-19 20:07:21,856 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 2, 2, 2, 2, 2, 1, 1] [2020-10-19 20:07:21,857 INFO L794 eck$LassoCheckResult]: Stem: 839#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 837#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 838#L28 call main_#t~ret10 := f91(main_~x~0);< 851#f91ENTRY ~x := #in~x; 883#L18 assume !(~x > 100); 866#L21 call #t~ret7 := f91(11 + ~x);< 867#f91ENTRY ~x := #in~x; 876#L18 assume !(~x > 100); 872#L21 call #t~ret7 := f91(11 + ~x);< 874#f91ENTRY ~x := #in~x; 877#L18 assume ~x > 100;#res := ~x - 10; 875#f91FINAL assume true; 873#f91EXIT >#29#return; 849#L21-1 call #t~ret8 := f91(#t~ret7);< 861#f91ENTRY ~x := #in~x; 891#L18 assume ~x > 100;#res := ~x - 10; 890#f91FINAL assume true; 887#f91EXIT >#31#return; 868#L21-2 #res := #t~ret8;havoc #t~ret8;havoc #t~ret7; 885#f91FINAL assume true; 884#f91EXIT >#29#return; 853#L21-1 call #t~ret8 := f91(#t~ret7);< 882#f91ENTRY [2020-10-19 20:07:21,857 INFO L796 eck$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~ret8;havoc #t~ret7; 885#f91FINAL assume true; 884#f91EXIT >#29#return; 854#L21-1 call #t~ret8 := f91(#t~ret7);< 882#f91ENTRY [2020-10-19 20:07:21,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:21,857 INFO L82 PathProgramCache]: Analyzing trace with hash -834951989, now seen corresponding path program 1 times [2020-10-19 20:07:21,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:21,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159000551] [2020-10-19 20:07:21,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:21,873 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:21,886 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:21,892 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:07:21,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:21,892 INFO L82 PathProgramCache]: Analyzing trace with hash -871747263, now seen corresponding path program 1 times [2020-10-19 20:07:21,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:21,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788428620] [2020-10-19 20:07:21,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:21,900 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:21,907 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:21,909 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:07:21,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:21,910 INFO L82 PathProgramCache]: Analyzing trace with hash 418853943, now seen corresponding path program 2 times [2020-10-19 20:07:21,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:21,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447719209] [2020-10-19 20:07:21,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:21,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-19 20:07:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:21,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-19 20:07:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:21,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-19 20:07:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:22,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-19 20:07:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:22,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-19 20:07:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:22,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-19 20:07:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:22,101 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-19 20:07:22,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447719209] [2020-10-19 20:07:22,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299401345] [2020-10-19 20:07:22,102 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 [2020-10-19 20:07:22,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 20:07:22,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 20:07:22,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 20:07:22,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:22,227 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-19 20:07:22,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 20:07:22,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-10-19 20:07:22,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674330596] [2020-10-19 20:07:22,473 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:22,473 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:22,473 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:22,473 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:22,474 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 20:07:22,474 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:22,474 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:22,474 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:22,474 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration4_Loop [2020-10-19 20:07:22,475 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:22,475 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:22,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:22,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:22,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:22,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:22,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:22,525 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:22,525 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 [2020-10-19 20:07:22,528 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:22,528 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:22,531 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:22,532 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 [2020-10-19 20:07:22,562 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:22,562 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:22,565 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:22,565 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 [2020-10-19 20:07:22,589 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:22,590 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:22,592 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:22,592 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 [2020-10-19 20:07:22,617 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:22,617 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 [2020-10-19 20:07:22,642 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 20:07:22,642 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:23,294 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 20:07:23,297 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:23,297 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:23,297 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:23,298 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:23,298 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 20:07:23,298 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:23,298 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:23,298 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:23,298 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration4_Loop [2020-10-19 20:07:23,299 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:23,299 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:23,300 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:23,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:23,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:23,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:23,314 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:23,344 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:23,345 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) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:23,349 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 [2020-10-19 20:07:23,350 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:23,350 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:23,350 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:23,351 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:23,351 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:23,352 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:23,352 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:23,357 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 [2020-10-19 20:07:23,381 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 [2020-10-19 20:07:23,382 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:23,382 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:23,383 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:23,383 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:23,383 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:23,383 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:23,383 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:23,389 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 [2020-10-19 20:07:23,421 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 [2020-10-19 20:07:23,423 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:23,423 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:23,423 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:23,423 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:23,423 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:23,423 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:23,424 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:23,425 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 [2020-10-19 20:07:23,449 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 [2020-10-19 20:07:23,450 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:23,450 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:23,451 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:23,451 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:23,451 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:23,452 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:23,452 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:23,455 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 20:07:23,457 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 20:07:23,458 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 [2020-10-19 20:07:23,463 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 20:07:23,464 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 20:07:23,464 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 20:07:23,464 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -1*f91_#in~x + 90 Supporting invariants [] [2020-10-19 20:07:23,484 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 20:07:23,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:23,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-19 20:07:23,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:23,567 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:23,573 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:23,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-19 20:07:23,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:23,759 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-19 20:07:23,760 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 [2020-10-19 20:07:23,761 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand 11 states. [2020-10-19 20:07:24,236 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. [2020-10-19 20:07:24,238 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 [2020-10-19 20:07:24,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-19 20:07:24,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 34 transitions. [2020-10-19 20:07:24,239 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 34 transitions. Stem has 22 letters. Loop has 19 letters. [2020-10-19 20:07:24,240 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:24,240 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 20:07:24,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:24,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-19 20:07:24,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:24,314 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:24,318 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:24,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-19 20:07:24,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:24,509 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-19 20:07:24,511 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 [2020-10-19 20:07:24,511 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand 11 states. [2020-10-19 20:07:24,930 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. [2020-10-19 20:07:24,932 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 [2020-10-19 20:07:24,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-19 20:07:24,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 34 transitions. [2020-10-19 20:07:24,933 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 34 transitions. Stem has 22 letters. Loop has 19 letters. [2020-10-19 20:07:24,934 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:24,934 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 20:07:24,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:24,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-19 20:07:24,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:25,005 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:25,008 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:25,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-19 20:07:25,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:25,223 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-19 20:07:25,224 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 [2020-10-19 20:07:25,225 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand 12 states. [2020-10-19 20:07:26,253 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. [2020-10-19 20:07:26,262 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 [2020-10-19 20:07:26,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-19 20:07:26,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 49 transitions. [2020-10-19 20:07:26,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 49 transitions. Stem has 22 letters. Loop has 19 letters. [2020-10-19 20:07:26,265 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:26,265 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 49 transitions. Stem has 41 letters. Loop has 19 letters. [2020-10-19 20:07:26,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:26,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 49 transitions. Stem has 22 letters. Loop has 38 letters. [2020-10-19 20:07:26,268 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:26,269 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 431 states and 531 transitions. [2020-10-19 20:07:26,282 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 29 [2020-10-19 20:07:26,289 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 431 states to 203 states and 269 transitions. [2020-10-19 20:07:26,289 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 95 [2020-10-19 20:07:26,290 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2020-10-19 20:07:26,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 203 states and 269 transitions. [2020-10-19 20:07:26,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:26,291 INFO L691 BuchiCegarLoop]: Abstraction has 203 states and 269 transitions. [2020-10-19 20:07:26,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states and 269 transitions. [2020-10-19 20:07:26,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 157. [2020-10-19 20:07:26,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-19 20:07:26,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 198 transitions. [2020-10-19 20:07:26,312 INFO L714 BuchiCegarLoop]: Abstraction has 157 states and 198 transitions. [2020-10-19 20:07:26,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 20:07:26,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 20:07:26,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-19 20:07:26,313 INFO L87 Difference]: Start difference. First operand 157 states and 198 transitions. Second operand 10 states. [2020-10-19 20:07:26,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 20:07:26,600 INFO L93 Difference]: Finished difference Result 159 states and 188 transitions. [2020-10-19 20:07:26,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-19 20:07:26,601 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 159 states and 188 transitions. [2020-10-19 20:07:26,604 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-19 20:07:26,607 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 159 states to 104 states and 123 transitions. [2020-10-19 20:07:26,607 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 76 [2020-10-19 20:07:26,608 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2020-10-19 20:07:26,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 123 transitions. [2020-10-19 20:07:26,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:26,608 INFO L691 BuchiCegarLoop]: Abstraction has 104 states and 123 transitions. [2020-10-19 20:07:26,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 123 transitions. [2020-10-19 20:07:26,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2020-10-19 20:07:26,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-19 20:07:26,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 119 transitions. [2020-10-19 20:07:26,618 INFO L714 BuchiCegarLoop]: Abstraction has 100 states and 119 transitions. [2020-10-19 20:07:26,618 INFO L594 BuchiCegarLoop]: Abstraction has 100 states and 119 transitions. [2020-10-19 20:07:26,618 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-19 20:07:26,618 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 100 states and 119 transitions. [2020-10-19 20:07:26,619 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-19 20:07:26,619 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:07:26,619 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:07:26,620 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [7, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1] [2020-10-19 20:07:26,621 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:26,621 INFO L794 eck$LassoCheckResult]: Stem: 2861#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2859#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 2860#L28 call main_#t~ret10 := f91(main_~x~0);< 2873#f91ENTRY ~x := #in~x; 2865#L18 assume !(~x > 100); 2866#L21 call #t~ret7 := f91(11 + ~x);< 2886#f91ENTRY ~x := #in~x; 2906#L18 assume !(~x > 100); 2900#L21 call #t~ret7 := f91(11 + ~x);< 2904#f91ENTRY ~x := #in~x; 2907#L18 assume ~x > 100;#res := ~x - 10; 2905#f91FINAL assume true; 2903#f91EXIT >#29#return; 2899#L21-1 call #t~ret8 := f91(#t~ret7);< 2902#f91ENTRY ~x := #in~x; 2934#L18 assume ~x > 100;#res := ~x - 10; 2921#f91FINAL assume true; 2920#f91EXIT >#31#return; 2918#L21-2 #res := #t~ret8;havoc #t~ret8;havoc #t~ret7; 2917#f91FINAL assume true; 2915#f91EXIT >#29#return; 2909#L21-1 call #t~ret8 := f91(#t~ret7);< 2914#f91ENTRY ~x := #in~x; 2912#L18 assume !(~x > 100); 2880#L21 call #t~ret7 := f91(11 + ~x);< 2888#f91ENTRY ~x := #in~x; 2889#L18 assume !(~x > 100); 2879#L21 call #t~ret7 := f91(11 + ~x);< 2908#f91ENTRY ~x := #in~x; 2956#L18 assume ~x > 100;#res := ~x - 10; 2954#f91FINAL assume true; 2890#f91EXIT >#29#return; 2878#L21-1 [2020-10-19 20:07:26,621 INFO L796 eck$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 [2020-10-19 20:07:26,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:26,621 INFO L82 PathProgramCache]: Analyzing trace with hash 2083076242, now seen corresponding path program 3 times [2020-10-19 20:07:26,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:26,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206575385] [2020-10-19 20:07:26,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:26,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-19 20:07:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:26,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-19 20:07:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:26,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-19 20:07:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:26,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-19 20:07:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:26,707 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-19 20:07:26,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206575385] [2020-10-19 20:07:26,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008862995] [2020-10-19 20:07:26,707 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 [2020-10-19 20:07:26,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-10-19 20:07:26,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 20:07:26,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 20:07:26,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:26,766 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-19 20:07:26,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 20:07:26,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 9 [2020-10-19 20:07:26,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663848719] [2020-10-19 20:07:26,767 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 20:07:26,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:26,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1767505954, now seen corresponding path program 2 times [2020-10-19 20:07:26,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:26,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824625601] [2020-10-19 20:07:26,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:26,772 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:26,774 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:26,775 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:07:26,872 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:26,872 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:26,872 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:26,873 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:26,873 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 20:07:26,873 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:26,873 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:26,873 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:26,873 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration5_Loop [2020-10-19 20:07:26,874 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:26,874 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:26,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:26,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:26,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:26,940 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:26,940 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 [2020-10-19 20:07:26,947 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:26,947 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:26,950 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:26,951 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 [2020-10-19 20:07:26,974 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:26,974 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 [2020-10-19 20:07:27,007 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 20:07:27,007 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:39,071 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2020-10-19 20:07:39,076 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:39,076 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:39,076 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:39,077 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:39,077 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 20:07:39,077 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:39,077 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:39,077 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:39,077 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration5_Loop [2020-10-19 20:07:39,077 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:39,077 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:39,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:39,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:39,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:39,144 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:39,145 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) [2020-10-19 20:07:39,149 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 [2020-10-19 20:07:39,151 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:39,151 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:39,151 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:39,152 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:39,152 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:39,152 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:39,153 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:39,157 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) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:39,183 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 [2020-10-19 20:07:39,185 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:39,185 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:39,185 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:39,185 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:39,185 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:39,186 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:39,187 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:39,190 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 20:07:39,192 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 20:07:39,193 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) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:39,195 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 20:07:39,195 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 20:07:39,195 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 20:07:39,195 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret7) = -2*f91_#t~ret7 + 201 Supporting invariants [] [2020-10-19 20:07:39,217 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 20:07:39,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:39,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-19 20:07:39,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:39,323 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:39,328 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:39,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-19 20:07:39,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:39,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:07:39,479 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 [2020-10-19 20:07:39,479 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24 Second operand 9 states. [2020-10-19 20:07:39,710 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. [2020-10-19 20:07:39,711 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 [2020-10-19 20:07:39,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-19 20:07:39,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2020-10-19 20:07:39,712 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 32 letters. Loop has 8 letters. [2020-10-19 20:07:39,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:39,712 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 20:07:39,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:39,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-19 20:07:39,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:39,788 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:39,792 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:39,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-19 20:07:39,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:39,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:07:39,924 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 [2020-10-19 20:07:39,924 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24 Second operand 9 states. [2020-10-19 20:07:40,151 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. [2020-10-19 20:07:40,157 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 [2020-10-19 20:07:40,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-19 20:07:40,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2020-10-19 20:07:40,158 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 32 letters. Loop has 8 letters. [2020-10-19 20:07:40,159 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:40,159 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 20:07:40,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:40,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-19 20:07:40,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:40,238 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:40,241 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:40,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-19 20:07:40,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:40,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:07:40,369 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 [2020-10-19 20:07:40,369 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24 Second operand 9 states. [2020-10-19 20:07:40,620 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. [2020-10-19 20:07:40,622 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 [2020-10-19 20:07:40,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-19 20:07:40,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 21 transitions. [2020-10-19 20:07:40,623 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 32 letters. Loop has 8 letters. [2020-10-19 20:07:40,623 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:40,623 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 40 letters. Loop has 8 letters. [2020-10-19 20:07:40,624 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:40,624 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 32 letters. Loop has 16 letters. [2020-10-19 20:07:40,625 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:40,625 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 181 states and 211 transitions. [2020-10-19 20:07:40,628 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 20:07:40,628 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 181 states to 0 states and 0 transitions. [2020-10-19 20:07:40,629 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 20:07:40,629 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 20:07:40,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 20:07:40,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 20:07:40,629 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 20:07:40,629 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 20:07:40,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 20:07:40,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 20:07:40,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-19 20:07:40,630 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 9 states. [2020-10-19 20:07:40,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 20:07:40,631 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-10-19 20:07:40,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 20:07:40,631 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-10-19 20:07:40,631 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 20:07:40,631 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 20:07:40,631 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 20:07:40,631 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 20:07:40,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 20:07:40,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 20:07:40,632 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 20:07:40,632 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 20:07:40,632 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 20:07:40,632 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-19 20:07:40,632 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-19 20:07:40,632 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 20:07:40,633 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-19 20:07:40,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 08:07:40 BoogieIcfgContainer [2020-10-19 20:07:40,641 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 20:07:40,641 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 20:07:40,641 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 20:07:40,642 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 20:07:40,643 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 08:06:52" (3/4) ... [2020-10-19 20:07:40,647 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 20:07:40,647 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 20:07:40,650 INFO L168 Benchmark]: Toolchain (without parser) took 49047.75 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 299.4 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -160.3 MB). Peak memory consumption was 139.1 MB. Max. memory is 11.5 GB. [2020-10-19 20:07:40,651 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 20:07:40,652 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.36 ms. Allocated memory is still 1.0 GB. Free memory was 954.6 MB in the beginning and 943.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 20:07:40,652 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 943.9 MB in the beginning and 1.1 GB in the end (delta: -192.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2020-10-19 20:07:40,653 INFO L168 Benchmark]: Boogie Preprocessor took 21.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 20:07:40,654 INFO L168 Benchmark]: RCFGBuilder took 302.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2020-10-19 20:07:40,655 INFO L168 Benchmark]: BuchiAutomizer took 48345.58 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 159.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -4.7 MB). Peak memory consumption was 154.6 MB. Max. memory is 11.5 GB. [2020-10-19 20:07:40,655 INFO L168 Benchmark]: Witness Printer took 5.73 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 20:07:40,659 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 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 264.36 ms. Allocated memory is still 1.0 GB. Free memory was 954.6 MB in the beginning and 943.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 97.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 943.9 MB in the beginning and 1.1 GB in the end (delta: -192.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 302.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 48345.58 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 159.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -4.7 MB). Peak memory consumption was 154.6 MB. Max. memory is 11.5 GB. * Witness Printer took 5.73 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 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 48.2s and 6 iterations. TraceHistogramMax:7. Analysis of lassos took 41.7s. Construction of modules took 0.9s. Büchi inclusion checks took 5.2s. 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, 0.9s 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: 38ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 12 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 3 LassoNonterminationAnalysisTime: 38.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...