./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/McCarthy91-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 0.1.24-678e011 [2019-11-20 04:46:49,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 04:46:49,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 04:46:49,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 04:46:49,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 04:46:49,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 04:46:49,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 04:46:49,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 04:46:49,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 04:46:49,199 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 04:46:49,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 04:46:49,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 04:46:49,201 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 04:46:49,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 04:46:49,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 04:46:49,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 04:46:49,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 04:46:49,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 04:46:49,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 04:46:49,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 04:46:49,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 04:46:49,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 04:46:49,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 04:46:49,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 04:46:49,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 04:46:49,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 04:46:49,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 04:46:49,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 04:46:49,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 04:46:49,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 04:46:49,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 04:46:49,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 04:46:49,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 04:46:49,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 04:46:49,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 04:46:49,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 04:46:49,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 04:46:49,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 04:46:49,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 04:46:49,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 04:46:49,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 04:46:49,230 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-20 04:46:49,256 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 04:46:49,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 04:46:49,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 04:46:49,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 04:46:49,257 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 04:46:49,257 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 04:46:49,258 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 04:46:49,258 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 04:46:49,258 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 04:46:49,258 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 04:46:49,258 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 04:46:49,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 04:46:49,259 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 04:46:49,259 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 04:46:49,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 04:46:49,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 04:46:49,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 04:46:49,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 04:46:49,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 04:46:49,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 04:46:49,260 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 04:46:49,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 04:46:49,260 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 04:46:49,261 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 04:46:49,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 04:46:49,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 04:46:49,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 04:46:49,261 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 04:46:49,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 04:46:49,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 04:46:49,262 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 04:46:49,262 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 04:46:49,263 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_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:46:49,394 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 04:46:49,404 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 04:46:49,409 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 04:46:49,411 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 04:46:49,411 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 04:46:49,411 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/bin/uautomizer/../../sv-benchmarks/c/recursive/McCarthy91-1.c [2019-11-20 04:46:49,471 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/bin/uautomizer/data/dc0423c6c/dee2185b0a6d4579b4e618883414440f/FLAG74f8792ec [2019-11-20 04:46:49,871 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 04:46:49,871 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/sv-benchmarks/c/recursive/McCarthy91-1.c [2019-11-20 04:46:49,876 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/bin/uautomizer/data/dc0423c6c/dee2185b0a6d4579b4e618883414440f/FLAG74f8792ec [2019-11-20 04:46:49,888 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/bin/uautomizer/data/dc0423c6c/dee2185b0a6d4579b4e618883414440f [2019-11-20 04:46:49,891 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 04:46:49,892 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 04:46:49,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 04:46:49,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 04:46:49,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 04:46:49,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:46:49" (1/1) ... [2019-11-20 04:46:49,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79037fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:46:49, skipping insertion in model container [2019-11-20 04:46:49,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:46:49" (1/1) ... [2019-11-20 04:46:49,907 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 04:46:49,920 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 04:46:50,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:46:50,075 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 04:46:50,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:46:50,194 INFO L192 MainTranslator]: Completed translation [2019-11-20 04:46:50,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:46:50 WrapperNode [2019-11-20 04:46:50,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 04:46:50,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 04:46:50,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 04:46:50,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 04:46:50,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:46:50" (1/1) ... [2019-11-20 04:46:50,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:46:50" (1/1) ... [2019-11-20 04:46:50,226 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 04:46:50,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 04:46:50,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 04:46:50,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 04:46:50,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:46:50" (1/1) ... [2019-11-20 04:46:50,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:46:50" (1/1) ... [2019-11-20 04:46:50,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:46:50" (1/1) ... [2019-11-20 04:46:50,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:46:50" (1/1) ... [2019-11-20 04:46:50,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:46:50" (1/1) ... [2019-11-20 04:46:50,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:46:50" (1/1) ... [2019-11-20 04:46:50,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:46:50" (1/1) ... [2019-11-20 04:46:50,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 04:46:50,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 04:46:50,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 04:46:50,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 04:46:50,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:46:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:46:50,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 04:46:50,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 04:46:50,298 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2019-11-20 04:46:50,299 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2019-11-20 04:46:50,437 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 04:46:50,438 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-20 04:46:50,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:46:50 BoogieIcfgContainer [2019-11-20 04:46:50,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 04:46:50,439 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 04:46:50,440 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 04:46:50,442 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 04:46:50,443 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 04:46:50,443 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 04:46:49" (1/3) ... [2019-11-20 04:46:50,444 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36adf70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 04:46:50, skipping insertion in model container [2019-11-20 04:46:50,444 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 04:46:50,444 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:46:50" (2/3) ... [2019-11-20 04:46:50,445 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36adf70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 04:46:50, skipping insertion in model container [2019-11-20 04:46:50,445 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 04:46:50,445 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:46:50" (3/3) ... [2019-11-20 04:46:50,446 INFO L371 chiAutomizerObserver]: Analyzing ICFG McCarthy91-1.c [2019-11-20 04:46:50,506 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 04:46:50,506 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 04:46:50,506 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 04:46:50,506 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 04:46:50,507 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 04:46:50,507 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 04:46:50,507 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 04:46:50,507 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 04:46:50,519 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2019-11-20 04:46:50,541 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 04:46:50,541 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:46:50,542 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:46:50,547 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 04:46:50,547 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 04:46:50,547 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 04:46:50,548 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2019-11-20 04:46:50,549 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 04:46:50,549 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:46:50,549 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:46:50,550 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 04:46:50,550 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 04:46:50,555 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 3#L26true call main_#t~ret3 := f91(main_~x~0);< 16#f91ENTRYtrue [2019-11-20 04:46:50,555 INFO L796 eck$LassoCheckResult]: Loop: 16#f91ENTRYtrue ~x := #in~x; 10#L16true assume !(~x > 100); 7#L19true call #t~ret0 := f91(11 + ~x);< 16#f91ENTRYtrue [2019-11-20 04:46:50,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:46:50,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1015, now seen corresponding path program 1 times [2019-11-20 04:46:50,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:46:50,566 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940801400] [2019-11-20 04:46:50,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:46:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:46:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:46:50,634 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:46:50,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:46:50,635 INFO L82 PathProgramCache]: Analyzing trace with hash 43828, now seen corresponding path program 1 times [2019-11-20 04:46:50,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:46:50,636 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055260191] [2019-11-20 04:46:50,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:46:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:46:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:46:50,650 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:46:50,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:46:50,651 INFO L82 PathProgramCache]: Analyzing trace with hash 30251902, now seen corresponding path program 1 times [2019-11-20 04:46:50,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:46:50,652 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015208651] [2019-11-20 04:46:50,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:46:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:46:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:46:50,662 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:46:50,755 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:46:50,756 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:46:50,756 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:46:50,756 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:46:50,756 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:46:50,757 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:46:50,757 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:46:50,757 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:46:50,757 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration1_Loop [2019-11-20 04:46:50,757 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:46:50,757 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:46:50,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:46:50,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:46:50,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:46:50,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:46:50,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:46:50,856 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:46:50,857 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:46:50,870 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:46:50,870 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:46:50,878 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:46:50,878 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_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:46:50,886 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:46:50,886 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:46:50,898 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:46:50,898 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_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:46:50,918 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:46:50,918 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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) [2019-11-20 04:46:50,943 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:46:50,943 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:46:50,957 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:46:50,960 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:46:50,960 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:46:50,960 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:46:50,960 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:46:50,960 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:46:50,960 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:46:50,960 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:46:50,960 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:46:50,961 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration1_Loop [2019-11-20 04:46:50,961 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:46:50,962 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:46:50,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:46:50,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:46:50,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:46:50,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:46:50,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:46:51,024 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:46:51,029 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:46:51,038 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 [2019-11-20 04:46:51,040 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:46:51,041 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:46:51,041 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:46:51,041 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:46:51,041 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:46:51,045 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:46:51,045 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:46:51,047 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:46:51,053 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 [2019-11-20 04:46:51,055 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:46:51,055 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:46:51,055 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:46:51,055 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:46:51,055 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:46:51,057 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:46:51,057 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:46:51,059 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:46:51,074 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 [2019-11-20 04:46:51,076 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:46:51,076 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:46:51,076 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:46:51,076 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:46:51,076 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:46:51,079 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:46:51,080 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:46:51,085 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:46:51,090 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 04:46:51,090 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_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:46:51,102 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:46:51,102 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:46:51,102 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:46:51,102 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -2*f91_#in~x + 211 Supporting invariants [] [2019-11-20 04:46:51,112 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 04:46:51,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:46:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:46:51,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:46:51,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:46:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:46:51,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 04:46:51,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:46:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:46:51,268 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 [2019-11-20 04:46:51,270 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 4 states. [2019-11-20 04:46:51,373 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. [2019-11-20 04:46:51,374 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 [2019-11-20 04:46:51,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 04:46:51,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2019-11-20 04:46:51,377 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 3 letters. [2019-11-20 04:46:51,378 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:46:51,378 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-20 04:46:51,378 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:46:51,378 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 6 letters. [2019-11-20 04:46:51,378 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:46:51,379 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 41 transitions. [2019-11-20 04:46:51,382 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 04:46:51,388 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 18 states and 24 transitions. [2019-11-20 04:46:51,389 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2019-11-20 04:46:51,389 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2019-11-20 04:46:51,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2019-11-20 04:46:51,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:46:51,391 INFO L688 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2019-11-20 04:46:51,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2019-11-20 04:46:51,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2019-11-20 04:46:51,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-20 04:46:51,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2019-11-20 04:46:51,418 INFO L711 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-11-20 04:46:51,418 INFO L591 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-11-20 04:46:51,418 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 04:46:51,418 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 20 transitions. [2019-11-20 04:46:51,419 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 04:46:51,419 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:46:51,419 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:46:51,420 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:46:51,420 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-20 04:46:51,420 INFO L794 eck$LassoCheckResult]: Stem: 105#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 99#L26 call main_#t~ret3 := f91(main_~x~0);< 104#f91ENTRY ~x := #in~x; 109#L16 assume !(~x > 100); 100#L19 call #t~ret0 := f91(11 + ~x);< 107#f91ENTRY ~x := #in~x; 110#L16 assume ~x > 100;#res := ~x - 10; 112#f91FINAL assume true; 111#f91EXIT >#26#return; 101#L19-1 [2019-11-20 04:46:51,421 INFO L796 eck$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 [2019-11-20 04:46:51,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:46:51,421 INFO L82 PathProgramCache]: Analyzing trace with hash -495039419, now seen corresponding path program 1 times [2019-11-20 04:46:51,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:46:51,421 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65602196] [2019-11-20 04:46:51,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:46:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:46:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:46:51,435 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:46:51,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:46:51,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1917219166, now seen corresponding path program 1 times [2019-11-20 04:46:51,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:46:51,436 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432537625] [2019-11-20 04:46:51,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:46:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:46:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:46:51,446 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:46:51,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:46:51,447 INFO L82 PathProgramCache]: Analyzing trace with hash -984000794, now seen corresponding path program 1 times [2019-11-20 04:46:51,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:46:51,447 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187518102] [2019-11-20 04:46:51,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:46:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:46:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:46:51,468 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:46:51,568 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:46:51,568 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:46:51,568 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:46:51,568 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:46:51,568 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:46:51,568 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:46:51,568 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:46:51,568 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:46:51,568 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration2_Loop [2019-11-20 04:46:51,569 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:46:51,569 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:46:51,570 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:46:51,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:46:51,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:46:51,639 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:46:51,639 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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) [2019-11-20 04:46:51,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:46:51,652 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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) [2019-11-20 04:46:51,678 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:46:51,678 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:47:03,745 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2019-11-20 04:47:03,749 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:47:03,749 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:47:03,749 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:47:03,749 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:47:03,749 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:47:03,750 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:47:03,750 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:47:03,750 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:47:03,750 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration2_Loop [2019-11-20 04:47:03,750 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:47:03,750 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:47:03,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:03,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:03,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:03,841 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:47:03,841 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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) [2019-11-20 04:47:03,856 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 [2019-11-20 04:47:03,858 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:47:03,858 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:47:03,858 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:47:03,859 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:47:03,859 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:47:03,863 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:47:03,863 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:47:03,875 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:47:03,878 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 04:47:03,878 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_430e5bf8-80b1-4f45-b007-2a94194c70bf/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) [2019-11-20 04:47:03,892 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:47:03,892 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:47:03,892 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:47:03,892 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret0) = -2*f91_#t~ret0 + 201 Supporting invariants [] Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:47:03,898 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 04:47:03,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:47:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:03,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 04:47:03,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:47:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:04,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 04:47:04,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:47:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:47:06,016 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 [2019-11-20 04:47:06,017 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 20 transitions. cyclomatic complexity: 6 Second operand 9 states. [2019-11-20 04:47:06,454 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. [2019-11-20 04:47:06,456 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 [2019-11-20 04:47:06,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-20 04:47:06,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 16 transitions. [2019-11-20 04:47:06,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 9 letters. Loop has 8 letters. [2019-11-20 04:47:06,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:47:06,459 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 17 letters. Loop has 8 letters. [2019-11-20 04:47:06,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:47:06,459 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 9 letters. Loop has 16 letters. [2019-11-20 04:47:06,460 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:47:06,460 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 72 transitions. [2019-11-20 04:47:06,464 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-11-20 04:47:06,467 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 41 states and 61 transitions. [2019-11-20 04:47:06,468 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2019-11-20 04:47:06,468 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2019-11-20 04:47:06,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 61 transitions. [2019-11-20 04:47:06,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:47:06,468 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 61 transitions. [2019-11-20 04:47:06,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 61 transitions. [2019-11-20 04:47:06,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2019-11-20 04:47:06,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-20 04:47:06,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2019-11-20 04:47:06,476 INFO L711 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2019-11-20 04:47:06,476 INFO L591 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2019-11-20 04:47:06,476 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 04:47:06,476 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 50 transitions. [2019-11-20 04:47:06,478 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-11-20 04:47:06,478 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:47:06,478 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:47:06,478 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:47:06,479 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 04:47:06,479 INFO L794 eck$LassoCheckResult]: Stem: 291#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 289#L26 call main_#t~ret3 := f91(main_~x~0);< 290#f91ENTRY ~x := #in~x; 312#L16 assume !(~x > 100); 281#L19 call #t~ret0 := f91(11 + ~x);< 297#f91ENTRY ~x := #in~x; 303#L16 assume ~x > 100;#res := ~x - 10; 310#f91FINAL assume true; 309#f91EXIT >#26#return; 285#L19-1 call #t~ret1 := f91(#t~ret0);< 294#f91ENTRY ~x := #in~x; 313#L16 assume !(~x > 100); 295#L19 [2019-11-20 04:47:06,479 INFO L796 eck$LassoCheckResult]: Loop: 295#L19 call #t~ret0 := f91(11 + ~x);< 296#f91ENTRY ~x := #in~x; 304#L16 assume !(~x > 100); 295#L19 [2019-11-20 04:47:06,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:47:06,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1198389434, now seen corresponding path program 2 times [2019-11-20 04:47:06,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:47:06,480 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175149357] [2019-11-20 04:47:06,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:47:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:47:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:47:06,493 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:47:06,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:47:06,493 INFO L82 PathProgramCache]: Analyzing trace with hash 54268, now seen corresponding path program 2 times [2019-11-20 04:47:06,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:47:06,494 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676165421] [2019-11-20 04:47:06,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:47:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:47:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:47:06,498 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:47:06,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:47:06,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1451488419, now seen corresponding path program 3 times [2019-11-20 04:47:06,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:47:06,499 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007797579] [2019-11-20 04:47:06,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:47:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:06,593 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 04:47:06,594 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007797579] [2019-11-20 04:47:06,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:47:06,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 04:47:06,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657205512] [2019-11-20 04:47:06,634 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:47:06,636 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:47:06,637 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:47:06,637 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:47:06,637 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:47:06,637 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:47:06,637 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:47:06,637 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:47:06,637 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration3_Loop [2019-11-20 04:47:06,637 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:47:06,638 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:47:06,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:06,641 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:06,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:06,645 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:06,724 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:47:06,724 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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) [2019-11-20 04:47:06,738 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:47:06,738 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:47:06,742 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:47:06,742 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_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:47:06,747 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:47:06,747 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:47:06,749 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:47:06,749 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_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:47:06,753 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:47:06,753 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:47:06,756 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:47:06,756 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_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:47:06,762 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:47:06,762 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:47:06,777 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:47:06,777 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:47:18,817 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2019-11-20 04:47:18,820 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:47:18,820 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:47:18,820 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:47:18,821 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:47:18,821 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:47:18,821 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:47:18,821 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:47:18,821 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:47:18,821 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration3_Loop [2019-11-20 04:47:18,821 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:47:18,821 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:47:18,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:18,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:18,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:18,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:18,879 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:47:18,880 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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) [2019-11-20 04:47:18,883 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:47:18,884 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:47:18,884 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:47:18,885 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:47:18,885 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:47:18,885 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:47:18,886 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:47:18,886 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:47:18,887 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:47:18,892 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 [2019-11-20 04:47:18,893 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:47:18,893 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:47:18,893 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:47:18,893 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:47:18,894 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:47:18,894 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:47:18,894 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:47:18,895 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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) [2019-11-20 04:47:18,906 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 [2019-11-20 04:47:18,907 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:47:18,907 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:47:18,908 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:47:18,908 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:47:18,908 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:47:18,908 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:47:18,908 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:47:18,913 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:47:18,918 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 [2019-11-20 04:47:18,919 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:47:18,919 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:47:18,919 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:47:18,920 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:47:18,920 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:47:18,921 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:47:18,921 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:47:18,924 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:47:18,934 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 04:47:18,934 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_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:47:18,938 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:47:18,938 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:47:18,938 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:47:18,938 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_~x) = -2*f91_~x + 189 Supporting invariants [] [2019-11-20 04:47:18,940 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 04:47:18,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:47:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:18,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 04:47:18,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:47:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:19,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 04:47:19,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:47:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:47:19,052 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 [2019-11-20 04:47:19,052 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19 Second operand 5 states. [2019-11-20 04:47:19,223 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. [2019-11-20 04:47:19,225 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 [2019-11-20 04:47:19,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 04:47:19,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 10 transitions. [2019-11-20 04:47:19,226 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 10 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-20 04:47:19,226 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:47:19,226 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:47:19,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:47:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:19,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 04:47:19,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:47:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:19,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 04:47:19,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:47:19,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:47:19,325 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 [2019-11-20 04:47:19,325 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19 Second operand 5 states. [2019-11-20 04:47:19,461 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. [2019-11-20 04:47:19,463 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 [2019-11-20 04:47:19,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 04:47:19,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 10 transitions. [2019-11-20 04:47:19,464 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 10 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-20 04:47:19,464 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:47:19,464 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:47:19,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:47:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:19,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 04:47:19,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:47:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:19,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 04:47:19,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:47:19,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:47:19,583 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2019-11-20 04:47:19,583 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19 Second operand 5 states. [2019-11-20 04:47:19,700 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. [2019-11-20 04:47:19,701 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 [2019-11-20 04:47:19,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 04:47:19,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2019-11-20 04:47:19,701 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-20 04:47:19,702 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:47:19,702 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 15 letters. Loop has 3 letters. [2019-11-20 04:47:19,702 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:47:19,702 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 12 letters. Loop has 6 letters. [2019-11-20 04:47:19,703 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:47:19,703 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 70 states and 99 transitions. [2019-11-20 04:47:19,706 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-20 04:47:19,708 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 70 states to 47 states and 73 transitions. [2019-11-20 04:47:19,709 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2019-11-20 04:47:19,709 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2019-11-20 04:47:19,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 73 transitions. [2019-11-20 04:47:19,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:47:19,709 INFO L688 BuchiCegarLoop]: Abstraction has 47 states and 73 transitions. [2019-11-20 04:47:19,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states and 73 transitions. [2019-11-20 04:47:19,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2019-11-20 04:47:19,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-20 04:47:19,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 59 transitions. [2019-11-20 04:47:19,715 INFO L711 BuchiCegarLoop]: Abstraction has 41 states and 59 transitions. [2019-11-20 04:47:19,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:47:19,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 04:47:19,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-20 04:47:19,718 INFO L87 Difference]: Start difference. First operand 41 states and 59 transitions. Second operand 8 states. [2019-11-20 04:47:19,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:47:19,842 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2019-11-20 04:47:19,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 04:47:19,843 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 81 transitions. [2019-11-20 04:47:19,846 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2019-11-20 04:47:19,848 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 57 states and 74 transitions. [2019-11-20 04:47:19,848 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-11-20 04:47:19,848 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2019-11-20 04:47:19,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 74 transitions. [2019-11-20 04:47:19,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:47:19,848 INFO L688 BuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2019-11-20 04:47:19,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 74 transitions. [2019-11-20 04:47:19,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2019-11-20 04:47:19,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-20 04:47:19,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2019-11-20 04:47:19,861 INFO L711 BuchiCegarLoop]: Abstraction has 56 states and 73 transitions. [2019-11-20 04:47:19,861 INFO L591 BuchiCegarLoop]: Abstraction has 56 states and 73 transitions. [2019-11-20 04:47:19,861 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 04:47:19,861 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 73 transitions. [2019-11-20 04:47:19,864 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2019-11-20 04:47:19,864 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:47:19,864 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:47:19,865 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2019-11-20 04:47:19,866 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 2, 2, 2, 2, 2, 1, 1] [2019-11-20 04:47:19,866 INFO L794 eck$LassoCheckResult]: Stem: 818#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 816#L26 call main_#t~ret3 := f91(main_~x~0);< 817#f91ENTRY ~x := #in~x; 840#L16 assume !(~x > 100); 825#L19 call #t~ret0 := f91(11 + ~x);< 826#f91ENTRY ~x := #in~x; 849#L16 assume !(~x > 100); 845#L19 call #t~ret0 := f91(11 + ~x);< 847#f91ENTRY ~x := #in~x; 850#L16 assume ~x > 100;#res := ~x - 10; 848#f91FINAL assume true; 846#f91EXIT >#26#return; 812#L19-1 call #t~ret1 := f91(#t~ret0);< 821#f91ENTRY ~x := #in~x; 863#L16 assume ~x > 100;#res := ~x - 10; 862#f91FINAL assume true; 859#f91EXIT >#28#return; 841#L19-2 #res := #t~ret1;havoc #t~ret0;havoc #t~ret1; 857#f91FINAL assume true; 856#f91EXIT >#26#return; 819#L19-1 call #t~ret1 := f91(#t~ret0);< 820#f91ENTRY [2019-11-20 04:47:19,866 INFO L796 eck$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~ret0;havoc #t~ret1; 857#f91FINAL assume true; 856#f91EXIT >#26#return; 828#L19-1 call #t~ret1 := f91(#t~ret0);< 820#f91ENTRY [2019-11-20 04:47:19,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:47:19,866 INFO L82 PathProgramCache]: Analyzing trace with hash 803701992, now seen corresponding path program 1 times [2019-11-20 04:47:19,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:47:19,867 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855545603] [2019-11-20 04:47:19,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:47:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:47:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:47:19,885 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:47:19,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:47:19,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1260361570, now seen corresponding path program 1 times [2019-11-20 04:47:19,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:47:19,886 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879841319] [2019-11-20 04:47:19,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:47:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:47:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:47:19,900 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:47:19,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:47:19,901 INFO L82 PathProgramCache]: Analyzing trace with hash 187356247, now seen corresponding path program 2 times [2019-11-20 04:47:19,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:47:19,901 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165084610] [2019-11-20 04:47:19,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:47:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:20,029 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-11-20 04:47:20,029 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165084610] [2019-11-20 04:47:20,029 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288552249] [2019-11-20 04:47:20,029 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:47:20,063 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 04:47:20,064 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:47:20,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 04:47:20,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:47:20,101 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-11-20 04:47:20,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 04:47:20,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2019-11-20 04:47:20,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565317891] [2019-11-20 04:47:20,291 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:47:20,291 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:47:20,291 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:47:20,291 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:47:20,291 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:47:20,291 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:47:20,291 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:47:20,291 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:47:20,291 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration4_Loop [2019-11-20 04:47:20,292 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:47:20,292 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:47:20,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:20,294 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:20,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:20,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:20,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:20,330 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:47:20,330 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:47:20,334 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:47:20,334 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:47:20,336 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:47:20,336 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_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:47:20,341 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:47:20,341 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:47:20,343 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:47:20,343 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_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:47:20,348 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:47:20,348 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:47:20,350 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:47:20,350 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_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:47:20,354 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:47:20,354 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:47:20,356 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:47:20,356 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_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:47:20,360 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:47:20,360 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:47:20,366 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:47:20,366 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:47:20,757 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:47:20,759 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:47:20,759 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:47:20,759 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:47:20,759 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:47:20,759 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:47:20,760 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:47:20,760 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:47:20,760 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:47:20,760 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration4_Loop [2019-11-20 04:47:20,760 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:47:20,760 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:47:20,760 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:20,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:20,769 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:20,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:20,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:20,817 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:47:20,817 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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) [2019-11-20 04:47:20,826 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 [2019-11-20 04:47:20,828 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:47:20,828 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:47:20,828 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:47:20,828 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:47:20,828 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:47:20,829 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:47:20,829 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:47:20,831 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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) [2019-11-20 04:47:20,838 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 [2019-11-20 04:47:20,840 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:47:20,840 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:47:20,840 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:47:20,840 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:47:20,840 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:47:20,841 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:47:20,841 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:47:20,842 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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) [2019-11-20 04:47:20,850 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:47:20,852 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:47:20,852 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:47:20,852 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:47:20,852 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:47:20,852 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:47:20,853 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:47:20,853 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:47:20,855 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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) [2019-11-20 04:47:20,862 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 [2019-11-20 04:47:20,864 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:47:20,864 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:47:20,864 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:47:20,864 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:47:20,864 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:47:20,865 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:47:20,865 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:47:20,867 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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) [2019-11-20 04:47:20,874 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 [2019-11-20 04:47:20,876 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:47:20,876 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:47:20,876 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:47:20,876 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:47:20,876 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:47:20,877 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:47:20,877 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:47:20,898 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:47:20,905 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 04:47:20,905 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_430e5bf8-80b1-4f45-b007-2a94194c70bf/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) [2019-11-20 04:47:20,909 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:47:20,909 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:47:20,909 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:47:20,910 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -1*f91_#in~x + 90 Supporting invariants [] [2019-11-20 04:47:20,911 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:47:20,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:47:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:20,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 04:47:20,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:47:20,992 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 04:47:20,996 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 04:47:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:21,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-20 04:47:21,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:47:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-20 04:47:21,200 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 [2019-11-20 04:47:21,201 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21 Second operand 12 states. [2019-11-20 04:47:21,607 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. [2019-11-20 04:47:21,608 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 [2019-11-20 04:47:21,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-20 04:47:21,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 33 transitions. [2019-11-20 04:47:21,609 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 33 transitions. Stem has 21 letters. Loop has 19 letters. [2019-11-20 04:47:21,610 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:47:21,610 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:47:21,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:47:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:21,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 04:47:21,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:47:21,704 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 04:47:21,706 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 04:47:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:21,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-20 04:47:21,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:47:21,866 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-20 04:47:21,866 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 [2019-11-20 04:47:21,866 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21 Second operand 12 states. [2019-11-20 04:47:22,245 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. [2019-11-20 04:47:22,246 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 [2019-11-20 04:47:22,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-20 04:47:22,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 33 transitions. [2019-11-20 04:47:22,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 33 transitions. Stem has 21 letters. Loop has 19 letters. [2019-11-20 04:47:22,247 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:47:22,247 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:47:22,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:47:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:22,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 04:47:22,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:47:22,295 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 04:47:22,297 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 04:47:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:22,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-20 04:47:22,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:47:22,464 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-20 04:47:22,464 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 [2019-11-20 04:47:22,465 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21 Second operand 12 states. [2019-11-20 04:47:23,228 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. [2019-11-20 04:47:23,238 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 [2019-11-20 04:47:23,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-20 04:47:23,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 48 transitions. [2019-11-20 04:47:23,239 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 48 transitions. Stem has 21 letters. Loop has 19 letters. [2019-11-20 04:47:23,240 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:47:23,240 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 48 transitions. Stem has 40 letters. Loop has 19 letters. [2019-11-20 04:47:23,241 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:47:23,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 48 transitions. Stem has 21 letters. Loop has 38 letters. [2019-11-20 04:47:23,243 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:47:23,243 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 430 states and 530 transitions. [2019-11-20 04:47:23,254 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 29 [2019-11-20 04:47:23,260 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 430 states to 202 states and 268 transitions. [2019-11-20 04:47:23,260 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 94 [2019-11-20 04:47:23,261 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 105 [2019-11-20 04:47:23,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 202 states and 268 transitions. [2019-11-20 04:47:23,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:47:23,262 INFO L688 BuchiCegarLoop]: Abstraction has 202 states and 268 transitions. [2019-11-20 04:47:23,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states and 268 transitions. [2019-11-20 04:47:23,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 156. [2019-11-20 04:47:23,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-11-20 04:47:23,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 197 transitions. [2019-11-20 04:47:23,280 INFO L711 BuchiCegarLoop]: Abstraction has 156 states and 197 transitions. [2019-11-20 04:47:23,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:47:23,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 04:47:23,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-20 04:47:23,281 INFO L87 Difference]: Start difference. First operand 156 states and 197 transitions. Second operand 11 states. [2019-11-20 04:47:23,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:47:23,474 INFO L93 Difference]: Finished difference Result 158 states and 187 transitions. [2019-11-20 04:47:23,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-20 04:47:23,476 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 158 states and 187 transitions. [2019-11-20 04:47:23,479 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-20 04:47:23,481 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 158 states to 103 states and 122 transitions. [2019-11-20 04:47:23,482 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2019-11-20 04:47:23,482 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2019-11-20 04:47:23,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 122 transitions. [2019-11-20 04:47:23,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:47:23,482 INFO L688 BuchiCegarLoop]: Abstraction has 103 states and 122 transitions. [2019-11-20 04:47:23,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states and 122 transitions. [2019-11-20 04:47:23,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2019-11-20 04:47:23,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-11-20 04:47:23,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2019-11-20 04:47:23,490 INFO L711 BuchiCegarLoop]: Abstraction has 99 states and 118 transitions. [2019-11-20 04:47:23,490 INFO L591 BuchiCegarLoop]: Abstraction has 99 states and 118 transitions. [2019-11-20 04:47:23,490 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-20 04:47:23,490 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 99 states and 118 transitions. [2019-11-20 04:47:23,492 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-20 04:47:23,492 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:47:23,492 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:47:23,493 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [7, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1] [2019-11-20 04:47:23,493 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-20 04:47:23,493 INFO L794 eck$LassoCheckResult]: Stem: 2845#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 2843#L26 call main_#t~ret3 := f91(main_~x~0);< 2844#f91ENTRY ~x := #in~x; 2874#L16 assume !(~x > 100); 2864#L19 call #t~ret0 := f91(11 + ~x);< 2863#f91ENTRY ~x := #in~x; 2866#L16 assume !(~x > 100); 2865#L19 call #t~ret0 := f91(11 + ~x);< 2898#f91ENTRY ~x := #in~x; 2901#L16 assume ~x > 100;#res := ~x - 10; 2900#f91FINAL assume true; 2899#f91EXIT >#26#return; 2894#L19-1 call #t~ret1 := f91(#t~ret0);< 2896#f91ENTRY ~x := #in~x; 2913#L16 assume ~x > 100;#res := ~x - 10; 2902#f91FINAL assume true; 2893#f91EXIT >#28#return; 2892#L19-2 #res := #t~ret1;havoc #t~ret0;havoc #t~ret1; 2890#f91FINAL assume true; 2889#f91EXIT >#26#return; 2883#L19-1 call #t~ret1 := f91(#t~ret0);< 2888#f91ENTRY ~x := #in~x; 2886#L16 assume !(~x > 100); 2848#L19 call #t~ret0 := f91(11 + ~x);< 2856#f91ENTRY ~x := #in~x; 2891#L16 assume !(~x > 100); 2847#L19 call #t~ret0 := f91(11 + ~x);< 2857#f91ENTRY ~x := #in~x; 2930#L16 assume ~x > 100;#res := ~x - 10; 2929#f91FINAL assume true; 2926#f91EXIT >#26#return; 2846#L19-1 [2019-11-20 04:47:23,493 INFO L796 eck$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 [2019-11-20 04:47:23,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:47:23,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1994701169, now seen corresponding path program 3 times [2019-11-20 04:47:23,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:47:23,494 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324122048] [2019-11-20 04:47:23,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:47:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:23,636 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-11-20 04:47:23,636 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324122048] [2019-11-20 04:47:23,637 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659451397] [2019-11-20 04:47:23,637 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:47:23,667 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-11-20 04:47:23,667 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:47:23,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 04:47:23,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:47:23,674 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-20 04:47:23,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-20 04:47:23,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 9 [2019-11-20 04:47:23,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963673507] [2019-11-20 04:47:23,675 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 04:47:23,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:47:23,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1917219166, now seen corresponding path program 2 times [2019-11-20 04:47:23,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:47:23,676 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331101617] [2019-11-20 04:47:23,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:47:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:47:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:47:23,682 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:47:23,754 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:47:23,754 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:47:23,754 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:47:23,754 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:47:23,754 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:47:23,754 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:47:23,754 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:47:23,754 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:47:23,754 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration5_Loop [2019-11-20 04:47:23,755 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:47:23,755 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:47:23,755 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:23,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:23,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:23,810 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:47:23,811 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:47:23,815 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:47:23,815 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:47:23,818 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:47:23,818 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_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:47:23,822 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:47:23,822 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:47:23,824 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:47:23,824 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_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:47:23,828 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:47:23,828 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:47:23,854 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:47:23,854 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:47:35,920 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2019-11-20 04:47:35,924 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:47:35,924 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:47:35,924 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:47:35,924 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:47:35,924 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:47:35,924 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:47:35,924 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:47:35,924 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:47:35,924 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration5_Loop [2019-11-20 04:47:35,925 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:47:35,925 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:47:35,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:35,934 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:35,936 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:47:35,965 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:47:35,966 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:47:35,969 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 [2019-11-20 04:47:35,970 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:47:35,970 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:47:35,970 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:47:35,970 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:47:35,970 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:47:35,972 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:47:35,972 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:47:35,977 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:47:35,980 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 04:47:35,980 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_430e5bf8-80b1-4f45-b007-2a94194c70bf/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 [2019-11-20 04:47:35,985 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:47:35,986 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:47:35,986 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:47:35,986 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret0) = -2*f91_#t~ret0 + 201 Supporting invariants [] [2019-11-20 04:47:35,988 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 04:47:36,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:47:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:36,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-20 04:47:36,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:47:36,064 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 04:47:36,066 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 04:47:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:36,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 04:47:36,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:47:36,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:47:36,200 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 [2019-11-20 04:47:36,200 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24 Second operand 9 states. [2019-11-20 04:47:36,460 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. [2019-11-20 04:47:36,461 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 [2019-11-20 04:47:36,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-20 04:47:36,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 16 transitions. [2019-11-20 04:47:36,462 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 31 letters. Loop has 8 letters. [2019-11-20 04:47:36,462 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:47:36,462 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:47:36,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:47:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:36,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-20 04:47:36,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:47:36,517 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 04:47:36,519 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 04:47:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:36,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 04:47:36,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Exception during sending of exit command (exit): Stream closed [2019-11-20 04:47:36,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:47:36,672 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 [2019-11-20 04:47:36,672 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24 Second operand 9 states. [2019-11-20 04:47:36,915 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. [2019-11-20 04:47:36,926 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 [2019-11-20 04:47:36,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-20 04:47:36,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 16 transitions. [2019-11-20 04:47:36,926 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 31 letters. Loop has 8 letters. [2019-11-20 04:47:36,926 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:47:36,927 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:47:36,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:47:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:36,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-20 04:47:36,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:47:36,981 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 04:47:36,983 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 04:47:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:47:37,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 04:47:37,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:47:37,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:47:37,129 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 [2019-11-20 04:47:37,129 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24 Second operand 9 states. [2019-11-20 04:47:37,395 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. [2019-11-20 04:47:37,402 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 [2019-11-20 04:47:37,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-20 04:47:37,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 20 transitions. [2019-11-20 04:47:37,402 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 31 letters. Loop has 8 letters. [2019-11-20 04:47:37,403 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:47:37,403 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 39 letters. Loop has 8 letters. [2019-11-20 04:47:37,404 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:47:37,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 31 letters. Loop has 16 letters. [2019-11-20 04:47:37,404 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:47:37,405 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 180 states and 210 transitions. [2019-11-20 04:47:37,407 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 04:47:37,407 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 180 states to 0 states and 0 transitions. [2019-11-20 04:47:37,408 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 04:47:37,408 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 04:47:37,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 04:47:37,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 04:47:37,408 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:47:37,408 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:47:37,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:47:37,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 04:47:37,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-20 04:47:37,409 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 9 states. [2019-11-20 04:47:37,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:47:37,409 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-20 04:47:37,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 04:47:37,409 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-20 04:47:37,409 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 04:47:37,409 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 04:47:37,409 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 04:47:37,410 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 04:47:37,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 04:47:37,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 04:47:37,410 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:47:37,410 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:47:37,410 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:47:37,410 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-20 04:47:37,410 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 04:47:37,410 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 04:47:37,410 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 04:47:37,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 04:47:37 BoogieIcfgContainer [2019-11-20 04:47:37,417 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 04:47:37,417 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 04:47:37,417 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 04:47:37,417 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 04:47:37,418 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:46:50" (3/4) ... [2019-11-20 04:47:37,421 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 04:47:37,421 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 04:47:37,423 INFO L168 Benchmark]: Toolchain (without parser) took 47530.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -119.3 MB). Peak memory consumption was 54.8 MB. Max. memory is 11.5 GB. [2019-11-20 04:47:37,423 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:47:37,424 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -184.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-20 04:47:37,424 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:47:37,425 INFO L168 Benchmark]: Boogie Preprocessor took 15.62 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:47:37,425 INFO L168 Benchmark]: RCFGBuilder took 196.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-20 04:47:37,426 INFO L168 Benchmark]: BuchiAutomizer took 46977.18 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 39.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.3 MB). Peak memory consumption was 86.6 MB. Max. memory is 11.5 GB. [2019-11-20 04:47:37,426 INFO L168 Benchmark]: Witness Printer took 3.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:47:37,429 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 303.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -184.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.62 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 196.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 46977.18 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 39.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.3 MB). Peak memory consumption was 86.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (3 trivial, 2 deterministic, 3 nondeterministic). One deterministic module has affine ranking function -2 * \old(x) + 211 and consists of 4 locations. One deterministic module has affine ranking function -2 * aux-f91(x+11)-aux + 201 and consists of 8 locations. One nondeterministic module has affine ranking function -2 * x + 189 and consists of 6 locations. One nondeterministic module has affine ranking function -1 * \old(x) + 90 and consists of 20 locations. One nondeterministic module has affine ranking function -2 * aux-f91(x+11)-aux + 201 and consists of 8 locations. 3 modules have a trivial ranking function, the largest among these consists of 11 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 46.9s and 6 iterations. TraceHistogramMax:7. Analysis of lassos took 39.0s. Construction of modules took 1.0s. Büchi inclusion checks took 6.5s. 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, 1.0s 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: 18ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 3 LassoNonterminationAnalysisTime: 36.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...