./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/McCarthy91-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer --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 37028c56b7915050ee6a79b5e737b9e44bf7c3db ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 14:32:51,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:32:51,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:32:51,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:32:51,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:32:51,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:32:51,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:32:51,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:32:51,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:32:51,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:32:51,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:32:51,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:32:51,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:32:51,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:32:51,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:32:51,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:32:51,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:32:51,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:32:51,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:32:51,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:32:51,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:32:51,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:32:51,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:32:51,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:32:51,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:32:51,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:32:51,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:32:51,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:32:51,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:32:51,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:32:51,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:32:51,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:32:51,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:32:51,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:32:51,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:32:51,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:32:51,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:32:51,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:32:51,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:32:51,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:32:51,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:32:51,360 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-12-07 14:32:51,371 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:32:51,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:32:51,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 14:32:51,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 14:32:51,372 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 14:32:51,373 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 14:32:51,373 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 14:32:51,373 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 14:32:51,373 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 14:32:51,373 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 14:32:51,373 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 14:32:51,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:32:51,373 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:32:51,374 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 14:32:51,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:32:51,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:32:51,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:32:51,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 14:32:51,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 14:32:51,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 14:32:51,374 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:32:51,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:32:51,375 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 14:32:51,375 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:32:51,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 14:32:51,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:32:51,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 14:32:51,375 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 14:32:51,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:32:51,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 14:32:51,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:32:51,376 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 14:32:51,377 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 14:32:51,377 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer 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 -> 37028c56b7915050ee6a79b5e737b9e44bf7c3db [2019-12-07 14:32:51,478 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:32:51,488 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:32:51,491 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:32:51,492 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:32:51,492 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:32:51,493 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/../../sv-benchmarks/c/recursive/McCarthy91-1.c [2019-12-07 14:32:51,531 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/data/0429947a9/0e059cdc12164a60873c643b414a443f/FLAGf332b89e0 [2019-12-07 14:32:51,866 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:32:51,866 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/sv-benchmarks/c/recursive/McCarthy91-1.c [2019-12-07 14:32:51,870 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/data/0429947a9/0e059cdc12164a60873c643b414a443f/FLAGf332b89e0 [2019-12-07 14:32:51,879 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/data/0429947a9/0e059cdc12164a60873c643b414a443f [2019-12-07 14:32:51,881 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:32:51,882 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:32:51,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:32:51,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:32:51,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:32:51,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:32:51" (1/1) ... [2019-12-07 14:32:51,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aaa2f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:51, skipping insertion in model container [2019-12-07 14:32:51,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:32:51" (1/1) ... [2019-12-07 14:32:51,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:32:51,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:32:51,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:32:51,996 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:32:52,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:32:52,045 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:32:52,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:52 WrapperNode [2019-12-07 14:32:52,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:32:52,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:32:52,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:32:52,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:32:52,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:52" (1/1) ... [2019-12-07 14:32:52,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:52" (1/1) ... [2019-12-07 14:32:52,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:32:52,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:32:52,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:32:52,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:32:52,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:52" (1/1) ... [2019-12-07 14:32:52,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:52" (1/1) ... [2019-12-07 14:32:52,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:52" (1/1) ... [2019-12-07 14:32:52,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:52" (1/1) ... [2019-12-07 14:32:52,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:52" (1/1) ... [2019-12-07 14:32:52,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:52" (1/1) ... [2019-12-07 14:32:52,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:52" (1/1) ... [2019-12-07 14:32:52,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:32:52,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:32:52,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:32:52,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:32:52,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:32:52,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:32:52,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:32:52,117 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2019-12-07 14:32:52,117 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2019-12-07 14:32:52,202 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:32:52,202 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 14:32:52,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:32:52 BoogieIcfgContainer [2019-12-07 14:32:52,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:32:52,203 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 14:32:52,203 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 14:32:52,205 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 14:32:52,206 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 14:32:52,206 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 02:32:51" (1/3) ... [2019-12-07 14:32:52,207 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@49c86ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 02:32:52, skipping insertion in model container [2019-12-07 14:32:52,207 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 14:32:52,207 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:52" (2/3) ... [2019-12-07 14:32:52,207 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@49c86ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 02:32:52, skipping insertion in model container [2019-12-07 14:32:52,207 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 14:32:52,207 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:32:52" (3/3) ... [2019-12-07 14:32:52,208 INFO L371 chiAutomizerObserver]: Analyzing ICFG McCarthy91-1.c [2019-12-07 14:32:52,236 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 14:32:52,236 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 14:32:52,236 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 14:32:52,236 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:32:52,236 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:32:52,236 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 14:32:52,237 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:32:52,237 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 14:32:52,245 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2019-12-07 14:32:52,261 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 14:32:52,261 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:32:52,261 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:32:52,266 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 14:32:52,266 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 14:32:52,266 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 14:32:52,266 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2019-12-07 14:32:52,267 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 14:32:52,268 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:32:52,268 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:32:52,268 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 14:32:52,268 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 14:32:52,273 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 3#L26true call main_#t~ret3 := f91(main_~x~0);< 16#f91ENTRYtrue [2019-12-07 14:32:52,273 INFO L796 eck$LassoCheckResult]: Loop: 16#f91ENTRYtrue ~x := #in~x; 10#L16true assume !(~x > 100); 7#L19true call #t~ret0 := f91(11 + ~x);< 16#f91ENTRYtrue [2019-12-07 14:32:52,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:32:52,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1015, now seen corresponding path program 1 times [2019-12-07 14:32:52,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:32:52,282 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758805297] [2019-12-07 14:32:52,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:32:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:32:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:32:52,341 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:32:52,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:32:52,342 INFO L82 PathProgramCache]: Analyzing trace with hash 43828, now seen corresponding path program 1 times [2019-12-07 14:32:52,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:32:52,342 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692672951] [2019-12-07 14:32:52,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:32:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:32:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:32:52,354 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:32:52,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:32:52,355 INFO L82 PathProgramCache]: Analyzing trace with hash 30251902, now seen corresponding path program 1 times [2019-12-07 14:32:52,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:32:52,355 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489141110] [2019-12-07 14:32:52,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:32:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:32:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:32:52,362 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:32:52,411 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:32:52,411 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:32:52,411 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:32:52,412 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:32:52,412 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:32:52,412 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:32:52,412 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:32:52,412 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:32:52,412 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration1_Loop [2019-12-07 14:32:52,412 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:32:52,412 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:32:52,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:32:52,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:32:52,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:32:52,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:32:52,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:32:52,482 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:32:52,482 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:32:52,488 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:32:52,488 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:32:52,496 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:32:52,496 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 /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:32:52,500 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:32:52,500 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:32:52,503 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:32:52,503 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 /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:32:52,508 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:32:52,508 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:32:52,514 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:32:52,515 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:32:52,522 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:32:52,524 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:32:52,524 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:32:52,524 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:32:52,524 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:32:52,524 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:32:52,524 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:32:52,524 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:32:52,524 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:32:52,524 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration1_Loop [2019-12-07 14:32:52,524 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:32:52,525 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:32:52,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:32:52,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:32:52,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:32:52,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:32:52,537 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:32:52,562 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:32:52,565 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:32:52,569 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 [2019-12-07 14:32:52,570 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:32:52,571 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:32:52,571 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:32:52,571 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:32:52,571 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:32:52,573 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:32:52,573 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:32:52,575 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:32:52,578 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 [2019-12-07 14:32:52,579 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:32:52,579 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:32:52,580 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:32:52,580 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:32:52,580 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:32:52,580 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:32:52,580 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:32:52,582 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:32:52,585 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 [2019-12-07 14:32:52,587 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:32:52,587 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:32:52,587 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:32:52,587 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:32:52,587 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:32:52,588 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:32:52,588 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:32:52,590 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:32:52,593 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 14:32:52,594 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/z3 Starting monitored process 9 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:32:52,597 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:32:52,597 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:32:52,597 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:32:52,598 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -2*f91_#in~x + 211 Supporting invariants [] [2019-12-07 14:32:52,601 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:32:52,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:32:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:32:52,632 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:32:52,633 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:32:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:32:52,646 INFO L264 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 14:32:52,646 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:32:52,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:32:52,684 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 [2019-12-07 14:32:52,685 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 4 states. [2019-12-07 14:32:52,762 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states.. Second operand 4 states. Result 33 states and 41 transitions. Complement of second has 12 states. [2019-12-07 14:32:52,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 14:32:52,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 14:32:52,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2019-12-07 14:32:52,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 3 letters. [2019-12-07 14:32:52,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:32:52,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 5 letters. Loop has 3 letters. [2019-12-07 14:32:52,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:32:52,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 6 letters. [2019-12-07 14:32:52,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:32:52,767 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 41 transitions. [2019-12-07 14:32:52,769 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 14:32:52,774 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 18 states and 24 transitions. [2019-12-07 14:32:52,775 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2019-12-07 14:32:52,775 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2019-12-07 14:32:52,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2019-12-07 14:32:52,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:32:52,776 INFO L688 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2019-12-07 14:32:52,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2019-12-07 14:32:52,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2019-12-07 14:32:52,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 14:32:52,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2019-12-07 14:32:52,796 INFO L711 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-12-07 14:32:52,796 INFO L591 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-12-07 14:32:52,796 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 14:32:52,796 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 20 transitions. [2019-12-07 14:32:52,797 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 14:32:52,797 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:32:52,797 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:32:52,798 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:32:52,798 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2019-12-07 14:32:52,798 INFO L794 eck$LassoCheckResult]: Stem: 105#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 99#L26 call main_#t~ret3 := f91(main_~x~0);< 104#f91ENTRY ~x := #in~x; 109#L16 assume !(~x > 100); 100#L19 call #t~ret0 := f91(11 + ~x);< 107#f91ENTRY ~x := #in~x; 110#L16 assume ~x > 100;#res := ~x - 10; 112#f91FINAL assume true; 111#f91EXIT >#26#return; 101#L19-1 [2019-12-07 14:32:52,798 INFO L796 eck$LassoCheckResult]: Loop: 101#L19-1 call #t~ret1 := f91(#t~ret0);< 106#f91ENTRY ~x := #in~x; 113#L16 assume !(~x > 100); 102#L19 call #t~ret0 := f91(11 + ~x);< 106#f91ENTRY ~x := #in~x; 113#L16 assume ~x > 100;#res := ~x - 10; 103#f91FINAL assume true; 108#f91EXIT >#26#return; 101#L19-1 [2019-12-07 14:32:52,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:32:52,798 INFO L82 PathProgramCache]: Analyzing trace with hash -495039419, now seen corresponding path program 1 times [2019-12-07 14:32:52,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:32:52,799 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117675016] [2019-12-07 14:32:52,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:32:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:32:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:32:52,808 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:32:52,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:32:52,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1917219166, now seen corresponding path program 1 times [2019-12-07 14:32:52,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:32:52,809 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438748690] [2019-12-07 14:32:52,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:32:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:32:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:32:52,816 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:32:52,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:32:52,817 INFO L82 PathProgramCache]: Analyzing trace with hash -984000794, now seen corresponding path program 1 times [2019-12-07 14:32:52,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:32:52,817 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683532063] [2019-12-07 14:32:52,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:32:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:32:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:32:52,831 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:32:52,898 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:32:52,898 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:32:52,898 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:32:52,898 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:32:52,899 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:32:52,899 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:32:52,899 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:32:52,899 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:32:52,899 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration2_Loop [2019-12-07 14:32:52,899 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:32:52,899 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:32:52,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:32:52,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:32:52,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:32:52,944 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:32:52,944 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:32:52,947 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:32:52,947 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:32:52,957 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:32:52,958 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:33:05,006 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2019-12-07 14:33:05,010 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:33:05,010 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:33:05,010 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:33:05,010 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:33:05,010 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:33:05,010 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:33:05,010 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:33:05,010 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:33:05,010 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration2_Loop [2019-12-07 14:33:05,011 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:33:05,011 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:33:05,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:05,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:05,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:05,049 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:33:05,049 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:33:05,052 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 [2019-12-07 14:33:05,053 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:33:05,053 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:33:05,053 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:33:05,053 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:33:05,054 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:33:05,055 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:33:05,055 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:33:05,057 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:33:05,061 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 14:33:05,061 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:33:05,064 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:33:05,064 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:33:05,064 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:33:05,064 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret0) = -2*f91_#t~ret0 + 201 Supporting invariants [] [2019-12-07 14:33:05,066 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:33:05,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:33:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:05,088 INFO L264 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 14:33:05,089 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:33:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:05,117 INFO L264 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 14:33:05,118 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:33:07,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:33:07,024 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 [2019-12-07 14:33:07,024 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 20 transitions. cyclomatic complexity: 6 Second operand 9 states. [2019-12-07 14:33:07,297 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 20 transitions. cyclomatic complexity: 6. Second operand 9 states. Result 50 states and 72 transitions. Complement of second has 32 states. [2019-12-07 14:33:07,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2019-12-07 14:33:07,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 14:33:07,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 16 transitions. [2019-12-07 14:33:07,299 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 9 letters. Loop has 8 letters. [2019-12-07 14:33:07,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:33:07,300 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 17 letters. Loop has 8 letters. [2019-12-07 14:33:07,301 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:33:07,301 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 9 letters. Loop has 16 letters. [2019-12-07 14:33:07,301 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:33:07,302 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 72 transitions. [2019-12-07 14:33:07,305 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-12-07 14:33:07,309 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 41 states and 61 transitions. [2019-12-07 14:33:07,309 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2019-12-07 14:33:07,309 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2019-12-07 14:33:07,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 61 transitions. [2019-12-07 14:33:07,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:33:07,310 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 61 transitions. [2019-12-07 14:33:07,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 61 transitions. [2019-12-07 14:33:07,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2019-12-07 14:33:07,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-12-07 14:33:07,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2019-12-07 14:33:07,316 INFO L711 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2019-12-07 14:33:07,316 INFO L591 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2019-12-07 14:33:07,316 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 14:33:07,317 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 50 transitions. [2019-12-07 14:33:07,318 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-12-07 14:33:07,318 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:33:07,318 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:33:07,319 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:33:07,319 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 14:33:07,319 INFO L794 eck$LassoCheckResult]: Stem: 291#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 289#L26 call main_#t~ret3 := f91(main_~x~0);< 290#f91ENTRY ~x := #in~x; 312#L16 assume !(~x > 100); 281#L19 call #t~ret0 := f91(11 + ~x);< 297#f91ENTRY ~x := #in~x; 303#L16 assume ~x > 100;#res := ~x - 10; 310#f91FINAL assume true; 309#f91EXIT >#26#return; 285#L19-1 call #t~ret1 := f91(#t~ret0);< 294#f91ENTRY ~x := #in~x; 313#L16 assume !(~x > 100); 295#L19 [2019-12-07 14:33:07,319 INFO L796 eck$LassoCheckResult]: Loop: 295#L19 call #t~ret0 := f91(11 + ~x);< 296#f91ENTRY ~x := #in~x; 304#L16 assume !(~x > 100); 295#L19 [2019-12-07 14:33:07,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:33:07,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1198389434, now seen corresponding path program 2 times [2019-12-07 14:33:07,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:33:07,320 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607693340] [2019-12-07 14:33:07,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:33:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:33:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:33:07,332 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:33:07,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:33:07,333 INFO L82 PathProgramCache]: Analyzing trace with hash 54268, now seen corresponding path program 2 times [2019-12-07 14:33:07,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:33:07,333 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782047857] [2019-12-07 14:33:07,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:33:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:33:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:33:07,338 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:33:07,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:33:07,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1451488419, now seen corresponding path program 3 times [2019-12-07 14:33:07,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:33:07,339 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133114725] [2019-12-07 14:33:07,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:33:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:07,394 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 14:33:07,394 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133114725] [2019-12-07 14:33:07,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:33:07,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-07 14:33:07,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767043438] [2019-12-07 14:33:07,418 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:33:07,418 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:33:07,418 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:33:07,419 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:33:07,419 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:33:07,419 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:33:07,419 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:33:07,419 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:33:07,419 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration3_Loop [2019-12-07 14:33:07,419 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:33:07,419 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:33:07,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:07,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:07,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:07,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:07,454 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:33:07,454 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/z3 Starting monitored process 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:33:07,457 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:33:07,457 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:33:07,460 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:33:07,460 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret0=0} Honda state: {f91_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/z3 Starting monitored process 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:33:07,464 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:33:07,464 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:33:07,467 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:33:07,467 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret1=0} Honda state: {f91_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:33:07,473 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:33:07,473 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:33:07,476 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:33:07,477 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 /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:33:07,481 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:33:07,481 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:33:07,493 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:33:07,493 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:33:19,505 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2019-12-07 14:33:19,509 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:33:19,509 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:33:19,509 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:33:19,509 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:33:19,509 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:33:19,509 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:33:19,509 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:33:19,509 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:33:19,509 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration3_Loop [2019-12-07 14:33:19,509 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:33:19,509 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:33:19,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:19,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:19,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:19,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:19,534 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:33:19,534 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:33:19,537 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 [2019-12-07 14:33:19,538 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:33:19,538 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:33:19,538 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:33:19,538 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:33:19,538 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:33:19,538 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:33:19,538 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:33:19,539 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:33:19,544 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 [2019-12-07 14:33:19,545 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:33:19,545 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:33:19,545 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:33:19,545 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:33:19,545 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:33:19,546 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:33:19,546 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:33:19,547 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:33:19,551 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 [2019-12-07 14:33:19,552 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:33:19,552 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:33:19,553 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:33:19,553 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:33:19,553 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:33:19,553 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:33:19,553 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:33:19,554 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:33:19,561 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 [2019-12-07 14:33:19,562 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:33:19,562 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:33:19,562 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:33:19,562 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:33:19,562 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:33:19,563 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:33:19,563 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:33:19,565 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:33:19,567 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 14:33:19,567 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:33:19,570 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:33:19,570 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:33:19,570 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:33:19,570 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_~x) = -2*f91_~x + 189 Supporting invariants [] [2019-12-07 14:33:19,572 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:33:19,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:33:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:19,592 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 14:33:19,593 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:33:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:19,611 INFO L264 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 14:33:19,612 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:33:19,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:33:19,635 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 [2019-12-07 14:33:19,635 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19 Second operand 5 states. [2019-12-07 14:33:19,740 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 42 states and 58 transitions. Complement of second has 13 states. [2019-12-07 14:33:19,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2019-12-07 14:33:19,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 14:33:19,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 10 transitions. [2019-12-07 14:33:19,741 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 10 transitions. Stem has 12 letters. Loop has 3 letters. [2019-12-07 14:33:19,741 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:33:19,741 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:33:19,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:33:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:19,759 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 14:33:19,760 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:33:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:19,776 INFO L264 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 14:33:19,776 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:33:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:33:19,801 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 [2019-12-07 14:33:19,801 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19 Second operand 5 states. [2019-12-07 14:33:19,896 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 42 states and 58 transitions. Complement of second has 13 states. [2019-12-07 14:33:19,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2019-12-07 14:33:19,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 14:33:19,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 10 transitions. [2019-12-07 14:33:19,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 10 transitions. Stem has 12 letters. Loop has 3 letters. [2019-12-07 14:33:19,898 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:33:19,898 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:33:19,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:33:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:19,916 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 14:33:19,916 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:33:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:19,931 INFO L264 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 14:33:19,932 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:33:19,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:33:19,972 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 [2019-12-07 14:33:19,972 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19 Second operand 5 states. [2019-12-07 14:33:20,102 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 70 states and 99 transitions. Complement of second has 16 states. [2019-12-07 14:33:20,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2019-12-07 14:33:20,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 14:33:20,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2019-12-07 14:33:20,103 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 12 letters. Loop has 3 letters. [2019-12-07 14:33:20,103 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:33:20,103 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 15 letters. Loop has 3 letters. [2019-12-07 14:33:20,103 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:33:20,103 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 12 letters. Loop has 6 letters. [2019-12-07 14:33:20,103 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:33:20,104 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 70 states and 99 transitions. [2019-12-07 14:33:20,106 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-12-07 14:33:20,107 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 70 states to 47 states and 73 transitions. [2019-12-07 14:33:20,107 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2019-12-07 14:33:20,108 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2019-12-07 14:33:20,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 73 transitions. [2019-12-07 14:33:20,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:33:20,108 INFO L688 BuchiCegarLoop]: Abstraction has 47 states and 73 transitions. [2019-12-07 14:33:20,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states and 73 transitions. [2019-12-07 14:33:20,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2019-12-07 14:33:20,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-12-07 14:33:20,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 59 transitions. [2019-12-07 14:33:20,112 INFO L711 BuchiCegarLoop]: Abstraction has 41 states and 59 transitions. [2019-12-07 14:33:20,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:33:20,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 14:33:20,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-12-07 14:33:20,114 INFO L87 Difference]: Start difference. First operand 41 states and 59 transitions. Second operand 8 states. [2019-12-07 14:33:20,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:33:20,180 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2019-12-07 14:33:20,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 14:33:20,181 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 81 transitions. [2019-12-07 14:33:20,182 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2019-12-07 14:33:20,184 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 57 states and 74 transitions. [2019-12-07 14:33:20,184 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-12-07 14:33:20,184 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2019-12-07 14:33:20,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 74 transitions. [2019-12-07 14:33:20,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:33:20,185 INFO L688 BuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2019-12-07 14:33:20,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 74 transitions. [2019-12-07 14:33:20,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2019-12-07 14:33:20,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-12-07 14:33:20,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2019-12-07 14:33:20,189 INFO L711 BuchiCegarLoop]: Abstraction has 56 states and 73 transitions. [2019-12-07 14:33:20,189 INFO L591 BuchiCegarLoop]: Abstraction has 56 states and 73 transitions. [2019-12-07 14:33:20,189 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 14:33:20,189 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 73 transitions. [2019-12-07 14:33:20,190 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2019-12-07 14:33:20,190 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:33:20,190 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:33:20,191 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2019-12-07 14:33:20,191 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 2, 2, 2, 2, 2, 1, 1] [2019-12-07 14:33:20,192 INFO L794 eck$LassoCheckResult]: Stem: 818#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 816#L26 call main_#t~ret3 := f91(main_~x~0);< 817#f91ENTRY ~x := #in~x; 840#L16 assume !(~x > 100); 825#L19 call #t~ret0 := f91(11 + ~x);< 826#f91ENTRY ~x := #in~x; 849#L16 assume !(~x > 100); 845#L19 call #t~ret0 := f91(11 + ~x);< 847#f91ENTRY ~x := #in~x; 850#L16 assume ~x > 100;#res := ~x - 10; 848#f91FINAL assume true; 846#f91EXIT >#26#return; 812#L19-1 call #t~ret1 := f91(#t~ret0);< 821#f91ENTRY ~x := #in~x; 863#L16 assume ~x > 100;#res := ~x - 10; 862#f91FINAL assume true; 859#f91EXIT >#28#return; 841#L19-2 #res := #t~ret1;havoc #t~ret1;havoc #t~ret0; 857#f91FINAL assume true; 856#f91EXIT >#26#return; 819#L19-1 call #t~ret1 := f91(#t~ret0);< 820#f91ENTRY [2019-12-07 14:33:20,192 INFO L796 eck$LassoCheckResult]: Loop: 820#f91ENTRY ~x := #in~x; 855#L16 assume !(~x > 100); 835#L19 call #t~ret0 := f91(11 + ~x);< 834#f91ENTRY ~x := #in~x; 837#L16 assume !(~x > 100); 836#L19 call #t~ret0 := f91(11 + ~x);< 851#f91ENTRY ~x := #in~x; 838#L16 assume ~x > 100;#res := ~x - 10; 839#f91FINAL assume true; 865#f91EXIT >#26#return; 813#L19-1 call #t~ret1 := f91(#t~ret0);< 854#f91ENTRY ~x := #in~x; 852#L16 assume ~x > 100;#res := ~x - 10; 853#f91FINAL assume true; 858#f91EXIT >#28#return; 841#L19-2 #res := #t~ret1;havoc #t~ret1;havoc #t~ret0; 857#f91FINAL assume true; 856#f91EXIT >#26#return; 828#L19-1 call #t~ret1 := f91(#t~ret0);< 820#f91ENTRY [2019-12-07 14:33:20,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:33:20,192 INFO L82 PathProgramCache]: Analyzing trace with hash 803701992, now seen corresponding path program 1 times [2019-12-07 14:33:20,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:33:20,192 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282303775] [2019-12-07 14:33:20,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:33:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:33:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:33:20,206 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:33:20,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:33:20,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1260361570, now seen corresponding path program 1 times [2019-12-07 14:33:20,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:33:20,207 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964552728] [2019-12-07 14:33:20,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:33:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:33:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:33:20,219 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:33:20,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:33:20,220 INFO L82 PathProgramCache]: Analyzing trace with hash 187356247, now seen corresponding path program 2 times [2019-12-07 14:33:20,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:33:20,220 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862265701] [2019-12-07 14:33:20,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:33:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:20,324 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-12-07 14:33:20,324 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862265701] [2019-12-07 14:33:20,324 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661980448] [2019-12-07 14:33:20,324 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:33:20,351 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 14:33:20,351 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 14:33:20,352 INFO L264 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 14:33:20,354 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:33:20,372 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-12-07 14:33:20,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 14:33:20,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2019-12-07 14:33:20,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410069507] [2019-12-07 14:33:20,494 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:33:20,494 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:33:20,494 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:33:20,494 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:33:20,494 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:33:20,494 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:33:20,494 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:33:20,494 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:33:20,494 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration4_Loop [2019-12-07 14:33:20,494 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:33:20,494 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:33:20,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:20,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:20,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:20,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:20,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:20,518 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:33:20,518 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:33:20,521 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:33:20,521 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:33:20,524 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:33:20,524 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret1=0} Honda state: {f91_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:33:20,528 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:33:20,528 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:33:20,531 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:33:20,531 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 /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:33:20,536 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:33:20,537 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:33:20,539 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:33:20,539 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 /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:33:20,545 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:33:20,545 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:33:20,547 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:33:20,547 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret0=0} Honda state: {f91_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:33:20,551 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:33:20,552 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:33:20,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:33:20,558 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:33:20,951 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:33:20,953 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:33:20,953 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:33:20,953 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:33:20,953 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:33:20,953 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:33:20,953 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:33:20,953 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:33:20,953 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:33:20,954 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration4_Loop [2019-12-07 14:33:20,954 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:33:20,954 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:33:20,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:20,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:20,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:20,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:20,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:20,980 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:33:20,980 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:33:20,984 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 [2019-12-07 14:33:20,985 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:33:20,985 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:33:20,985 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:33:20,985 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:33:20,985 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:33:20,986 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:33:20,986 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:33:20,987 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:33:20,992 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 [2019-12-07 14:33:20,993 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:33:20,993 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:33:20,993 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:33:20,993 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:33:20,993 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:33:20,993 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:33:20,993 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:33:20,994 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:33:20,998 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 [2019-12-07 14:33:20,999 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:33:20,999 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:33:20,999 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:33:20,999 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:33:20,999 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:33:21,000 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:33:21,000 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:33:21,001 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:33:21,005 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 [2019-12-07 14:33:21,006 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:33:21,006 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:33:21,006 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:33:21,006 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:33:21,006 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:33:21,007 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:33:21,007 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:33:21,008 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:33:21,012 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 [2019-12-07 14:33:21,013 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:33:21,013 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:33:21,013 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:33:21,013 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:33:21,013 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:33:21,014 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:33:21,014 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:33:21,016 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:33:21,018 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 14:33:21,018 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:33:21,026 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:33:21,027 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:33:21,027 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:33:21,027 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -1*f91_#in~x + 90 Supporting invariants [] [2019-12-07 14:33:21,030 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:33:21,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:33:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:21,058 INFO L264 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 14:33:21,060 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:33:21,073 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 14:33:21,075 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 14:33:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:21,093 INFO L264 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 25 conjunts are in the unsatisfiable core [2019-12-07 14:33:21,094 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:33:21,192 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-12-07 14:33:21,192 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2019-12-07 14:33:21,192 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21 Second operand 12 states. [2019-12-07 14:33:21,465 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 124 states and 149 transitions. Complement of second has 47 states. [2019-12-07 14:33:21,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2019-12-07 14:33:21,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 14:33:21,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 33 transitions. [2019-12-07 14:33:21,466 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 33 transitions. Stem has 21 letters. Loop has 19 letters. [2019-12-07 14:33:21,466 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:33:21,466 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:33:21,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:33:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:21,492 INFO L264 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 14:33:21,493 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:33:21,505 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 14:33:21,507 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 14:33:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:21,526 INFO L264 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 25 conjunts are in the unsatisfiable core [2019-12-07 14:33:21,527 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:33:21,614 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-12-07 14:33:21,614 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 10 loop predicates [2019-12-07 14:33:21,615 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21 Second operand 12 states. [2019-12-07 14:33:21,881 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 124 states and 149 transitions. Complement of second has 47 states. [2019-12-07 14:33:21,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2019-12-07 14:33:21,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 14:33:21,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 33 transitions. [2019-12-07 14:33:21,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 33 transitions. Stem has 21 letters. Loop has 19 letters. [2019-12-07 14:33:21,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:33:21,882 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:33:21,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:33:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:21,906 INFO L264 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 14:33:21,907 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:33:21,918 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 14:33:21,919 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 14:33:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:21,933 INFO L264 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 25 conjunts are in the unsatisfiable core [2019-12-07 14:33:21,934 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:33:22,025 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-12-07 14:33:22,025 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 [2019-12-07 14:33:22,025 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21 Second operand 12 states. [2019-12-07 14:33:22,600 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 430 states and 530 transitions. Complement of second has 216 states. [2019-12-07 14:33:22,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 20 states 2 stem states 17 non-accepting loop states 1 accepting loop states [2019-12-07 14:33:22,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 14:33:22,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 48 transitions. [2019-12-07 14:33:22,602 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 48 transitions. Stem has 21 letters. Loop has 19 letters. [2019-12-07 14:33:22,602 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:33:22,603 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 48 transitions. Stem has 40 letters. Loop has 19 letters. [2019-12-07 14:33:22,603 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:33:22,603 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 48 transitions. Stem has 21 letters. Loop has 38 letters. [2019-12-07 14:33:22,605 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:33:22,605 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 430 states and 530 transitions. [2019-12-07 14:33:22,612 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 29 [2019-12-07 14:33:22,616 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 430 states to 202 states and 268 transitions. [2019-12-07 14:33:22,616 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 94 [2019-12-07 14:33:22,616 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 105 [2019-12-07 14:33:22,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 202 states and 268 transitions. [2019-12-07 14:33:22,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:33:22,617 INFO L688 BuchiCegarLoop]: Abstraction has 202 states and 268 transitions. [2019-12-07 14:33:22,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states and 268 transitions. [2019-12-07 14:33:22,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 156. [2019-12-07 14:33:22,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-12-07 14:33:22,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 197 transitions. [2019-12-07 14:33:22,629 INFO L711 BuchiCegarLoop]: Abstraction has 156 states and 197 transitions. [2019-12-07 14:33:22,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:33:22,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 14:33:22,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-12-07 14:33:22,630 INFO L87 Difference]: Start difference. First operand 156 states and 197 transitions. Second operand 11 states. [2019-12-07 14:33:22,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:33:22,762 INFO L93 Difference]: Finished difference Result 158 states and 187 transitions. [2019-12-07 14:33:22,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-07 14:33:22,762 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 158 states and 187 transitions. [2019-12-07 14:33:22,764 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-12-07 14:33:22,766 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 158 states to 103 states and 122 transitions. [2019-12-07 14:33:22,766 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2019-12-07 14:33:22,766 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2019-12-07 14:33:22,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 122 transitions. [2019-12-07 14:33:22,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:33:22,766 INFO L688 BuchiCegarLoop]: Abstraction has 103 states and 122 transitions. [2019-12-07 14:33:22,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states and 122 transitions. [2019-12-07 14:33:22,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2019-12-07 14:33:22,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-12-07 14:33:22,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2019-12-07 14:33:22,774 INFO L711 BuchiCegarLoop]: Abstraction has 99 states and 118 transitions. [2019-12-07 14:33:22,774 INFO L591 BuchiCegarLoop]: Abstraction has 99 states and 118 transitions. [2019-12-07 14:33:22,774 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 14:33:22,774 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 99 states and 118 transitions. [2019-12-07 14:33:22,775 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-12-07 14:33:22,775 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:33:22,775 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:33:22,776 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [7, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1] [2019-12-07 14:33:22,776 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2019-12-07 14:33:22,777 INFO L794 eck$LassoCheckResult]: Stem: 2845#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 2843#L26 call main_#t~ret3 := f91(main_~x~0);< 2844#f91ENTRY ~x := #in~x; 2874#L16 assume !(~x > 100); 2864#L19 call #t~ret0 := f91(11 + ~x);< 2863#f91ENTRY ~x := #in~x; 2866#L16 assume !(~x > 100); 2865#L19 call #t~ret0 := f91(11 + ~x);< 2898#f91ENTRY ~x := #in~x; 2901#L16 assume ~x > 100;#res := ~x - 10; 2900#f91FINAL assume true; 2899#f91EXIT >#26#return; 2894#L19-1 call #t~ret1 := f91(#t~ret0);< 2896#f91ENTRY ~x := #in~x; 2913#L16 assume ~x > 100;#res := ~x - 10; 2902#f91FINAL assume true; 2893#f91EXIT >#28#return; 2892#L19-2 #res := #t~ret1;havoc #t~ret1;havoc #t~ret0; 2890#f91FINAL assume true; 2889#f91EXIT >#26#return; 2883#L19-1 call #t~ret1 := f91(#t~ret0);< 2888#f91ENTRY ~x := #in~x; 2886#L16 assume !(~x > 100); 2848#L19 call #t~ret0 := f91(11 + ~x);< 2856#f91ENTRY ~x := #in~x; 2891#L16 assume !(~x > 100); 2847#L19 call #t~ret0 := f91(11 + ~x);< 2857#f91ENTRY ~x := #in~x; 2930#L16 assume ~x > 100;#res := ~x - 10; 2929#f91FINAL assume true; 2926#f91EXIT >#26#return; 2846#L19-1 [2019-12-07 14:33:22,777 INFO L796 eck$LassoCheckResult]: Loop: 2846#L19-1 call #t~ret1 := f91(#t~ret0);< 2849#f91ENTRY ~x := #in~x; 2862#L16 assume !(~x > 100); 2882#L19 call #t~ret0 := f91(11 + ~x);< 2927#f91ENTRY ~x := #in~x; 2934#L16 assume ~x > 100;#res := ~x - 10; 2933#f91FINAL assume true; 2925#f91EXIT >#26#return; 2846#L19-1 [2019-12-07 14:33:22,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:33:22,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1994701169, now seen corresponding path program 3 times [2019-12-07 14:33:22,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:33:22,777 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177240595] [2019-12-07 14:33:22,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:33:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:22,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-12-07 14:33:22,832 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177240595] [2019-12-07 14:33:22,832 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123205609] [2019-12-07 14:33:22,832 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:33:22,855 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-12-07 14:33:22,855 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 14:33:22,856 INFO L264 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 14:33:22,857 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:33:22,862 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-07 14:33:22,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 14:33:22,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 9 [2019-12-07 14:33:22,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879885824] [2019-12-07 14:33:22,863 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 14:33:22,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:33:22,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1917219166, now seen corresponding path program 2 times [2019-12-07 14:33:22,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:33:22,864 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394172658] [2019-12-07 14:33:22,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:33:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:33:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:33:22,868 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:33:22,920 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:33:22,920 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:33:22,920 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:33:22,920 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:33:22,920 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:33:22,920 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:33:22,921 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:33:22,921 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:33:22,921 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration5_Loop [2019-12-07 14:33:22,921 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:33:22,921 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:33:22,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:22,923 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:22,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:22,949 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:33:22,949 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:33:22,952 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:33:22,953 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:33:22,955 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:33:22,956 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 /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:33:22,960 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:33:22,960 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:33:22,962 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:33:22,963 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret1=0} Honda state: {f91_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:33:22,966 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:33:22,966 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/z3 Starting monitored process 41 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:33:22,977 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:33:22,977 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:33:34,999 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2019-12-07 14:33:35,003 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:33:35,003 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:33:35,003 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:33:35,003 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:33:35,003 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:33:35,003 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:33:35,003 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:33:35,003 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:33:35,004 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration5_Loop [2019-12-07 14:33:35,004 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:33:35,004 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:33:35,004 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:35,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:35,013 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:33:35,036 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:33:35,036 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:33:35,038 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 [2019-12-07 14:33:35,040 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:33:35,040 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:33:35,040 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:33:35,040 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:33:35,040 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:33:35,041 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:33:35,041 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:33:35,044 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:33:35,046 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 14:33:35,047 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c56b53bc-f0a4-451c-8115-f2ba27e1ae59/bin/uautomizer/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 [2019-12-07 14:33:35,049 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:33:35,049 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:33:35,049 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:33:35,049 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret0) = -2*f91_#t~ret0 + 201 Supporting invariants [] [2019-12-07 14:33:35,050 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:33:35,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:33:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:35,081 INFO L264 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-07 14:33:35,082 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:33:35,093 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 14:33:35,094 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 14:33:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:35,103 INFO L264 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 14:33:35,104 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:33:35,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:33:35,215 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 [2019-12-07 14:33:35,215 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24 Second operand 9 states. [2019-12-07 14:33:35,439 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 138 states and 160 transitions. Complement of second has 24 states. [2019-12-07 14:33:35,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2019-12-07 14:33:35,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 14:33:35,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 16 transitions. [2019-12-07 14:33:35,440 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 31 letters. Loop has 8 letters. [2019-12-07 14:33:35,440 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:33:35,440 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:33:35,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:33:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:35,468 INFO L264 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-07 14:33:35,469 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:33:35,479 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 14:33:35,480 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 14:33:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:35,489 INFO L264 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 14:33:35,490 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:33:35,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:33:35,574 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 [2019-12-07 14:33:35,574 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24 Second operand 9 states. [2019-12-07 14:33:35,789 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 138 states and 160 transitions. Complement of second has 24 states. [2019-12-07 14:33:35,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2019-12-07 14:33:35,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 14:33:35,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 16 transitions. [2019-12-07 14:33:35,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 31 letters. Loop has 8 letters. [2019-12-07 14:33:35,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:33:35,790 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:33:35,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:33:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:35,824 INFO L264 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-07 14:33:35,825 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:33:35,835 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 14:33:35,837 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 14:33:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:33:35,845 INFO L264 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 14:33:35,846 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:33:35,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:33:35,939 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 [2019-12-07 14:33:35,939 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24 Second operand 9 states. [2019-12-07 14:33:36,172 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 180 states and 210 transitions. Complement of second has 27 states. [2019-12-07 14:33:36,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2019-12-07 14:33:36,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 14:33:36,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 20 transitions. [2019-12-07 14:33:36,173 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 31 letters. Loop has 8 letters. [2019-12-07 14:33:36,174 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:33:36,174 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 39 letters. Loop has 8 letters. [2019-12-07 14:33:36,174 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:33:36,174 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 31 letters. Loop has 16 letters. [2019-12-07 14:33:36,175 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:33:36,175 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 180 states and 210 transitions. [2019-12-07 14:33:36,176 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 14:33:36,176 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 180 states to 0 states and 0 transitions. [2019-12-07 14:33:36,176 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 14:33:36,176 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 14:33:36,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 14:33:36,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 14:33:36,176 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:33:36,177 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:33:36,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:33:36,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 14:33:36,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-12-07 14:33:36,177 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 9 states. [2019-12-07 14:33:36,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:33:36,177 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-12-07 14:33:36,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 14:33:36,177 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-12-07 14:33:36,177 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 14:33:36,177 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 14:33:36,177 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 14:33:36,177 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 14:33:36,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 14:33:36,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 14:33:36,178 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:33:36,178 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:33:36,178 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:33:36,178 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 14:33:36,178 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 14:33:36,178 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 14:33:36,178 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 14:33:36,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 02:33:36 BoogieIcfgContainer [2019-12-07 14:33:36,182 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 14:33:36,182 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:33:36,182 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:33:36,182 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:33:36,183 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:32:52" (3/4) ... [2019-12-07 14:33:36,184 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 14:33:36,185 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:33:36,186 INFO L168 Benchmark]: Toolchain (without parser) took 44303.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 938.0 MB in the beginning and 1.0 GB in the end (delta: -96.7 MB). Peak memory consumption was 35.4 MB. Max. memory is 11.5 GB. [2019-12-07 14:33:36,186 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:33:36,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 162.77 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -163.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-12-07 14:33:36,187 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.30 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:33:36,187 INFO L168 Benchmark]: Boogie Preprocessor took 10.07 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:33:36,187 INFO L168 Benchmark]: RCFGBuilder took 127.53 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-12-07 14:33:36,188 INFO L168 Benchmark]: BuchiAutomizer took 43978.72 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 26.7 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 47.8 MB). Peak memory consumption was 74.5 MB. Max. memory is 11.5 GB. [2019-12-07 14:33:36,188 INFO L168 Benchmark]: Witness Printer took 2.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:33:36,190 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 162.77 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -163.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.30 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.07 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 127.53 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 43978.72 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 26.7 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 47.8 MB). Peak memory consumption was 74.5 MB. Max. memory is 11.5 GB. * Witness Printer took 2.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 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 11 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 43.9s and 6 iterations. TraceHistogramMax:7. Analysis of lassos took 37.9s. Construction of modules took 0.7s. Büchi inclusion checks took 5.0s. 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 99 states and ocurred in iteration 4. Nontrivial modules had stage [2, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 12/24 HoareTripleCheckerStatistics: 154 SDtfs, 266 SDslu, 167 SDs, 0 SdLazy, 806 SolverSat, 228 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf96 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq166 hnf92 smp100 dnf100 smp100 tf109 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 8ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 3 LassoNonterminationAnalysisTime: 36.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...