./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/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 64bit --witnessprinter.graph.data.programhash a5e4c58569d8caa47946d30f6cb501096837aef1 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 15:55:12,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:55:12,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:55:12,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:55:12,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:55:12,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:55:12,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:55:12,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:55:12,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:55:12,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:55:12,890 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:55:12,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:55:12,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:55:12,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:55:12,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:55:12,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:55:12,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:55:12,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:55:12,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:55:12,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:55:12,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:55:12,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:55:12,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:55:12,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:55:12,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:55:12,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:55:12,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:55:12,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:55:12,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:55:12,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:55:12,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:55:12,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:55:12,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:55:12,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:55:12,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:55:12,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:55:12,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:55:12,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:55:12,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:55:12,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:55:12,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:55:12,912 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 15:55:12,925 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:55:12,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:55:12,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:55:12,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:55:12,926 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:55:12,927 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 15:55:12,927 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 15:55:12,927 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 15:55:12,927 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 15:55:12,927 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 15:55:12,927 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 15:55:12,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:55:12,928 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 15:55:12,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:55:12,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:55:12,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 15:55:12,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 15:55:12,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 15:55:12,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:55:12,929 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 15:55:12,929 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:55:12,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 15:55:12,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:55:12,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:55:12,929 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 15:55:12,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:55:12,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 15:55:12,930 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:55:12,930 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 15:55:12,930 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 15:55:12,931 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_a84aec4b-09e2-4826-bea7-dd5df0373672/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5e4c58569d8caa47946d30f6cb501096837aef1 [2019-12-07 15:55:13,040 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:55:13,050 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:55:13,053 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:55:13,054 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:55:13,055 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:55:13,055 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c [2019-12-07 15:55:13,097 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/data/f91f15598/ee85c6d0bfd64b6e9a199611227066f0/FLAG02ebb50aa [2019-12-07 15:55:13,418 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:55:13,419 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c [2019-12-07 15:55:13,422 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/data/f91f15598/ee85c6d0bfd64b6e9a199611227066f0/FLAG02ebb50aa [2019-12-07 15:55:13,863 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/data/f91f15598/ee85c6d0bfd64b6e9a199611227066f0 [2019-12-07 15:55:13,866 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:55:13,867 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:55:13,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:55:13,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:55:13,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:55:13,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:55:13" (1/1) ... [2019-12-07 15:55:13,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d27e798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:13, skipping insertion in model container [2019-12-07 15:55:13,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:55:13" (1/1) ... [2019-12-07 15:55:13,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:55:13,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:55:13,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:55:13,986 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:55:13,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:55:14,037 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:55:14,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:14 WrapperNode [2019-12-07 15:55:14,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:55:14,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:55:14,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:55:14,038 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:55:14,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:14" (1/1) ... [2019-12-07 15:55:14,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:14" (1/1) ... [2019-12-07 15:55:14,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:55:14,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:55:14,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:55:14,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:55:14,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:14" (1/1) ... [2019-12-07 15:55:14,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:14" (1/1) ... [2019-12-07 15:55:14,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:14" (1/1) ... [2019-12-07 15:55:14,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:14" (1/1) ... [2019-12-07 15:55:14,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:14" (1/1) ... [2019-12-07 15:55:14,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:14" (1/1) ... [2019-12-07 15:55:14,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:14" (1/1) ... [2019-12-07 15:55:14,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:55:14,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:55:14,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:55:14,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:55:14,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:14,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:55:14,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:55:14,192 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:55:14,192 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 15:55:14,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:55:14 BoogieIcfgContainer [2019-12-07 15:55:14,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:55:14,194 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 15:55:14,194 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 15:55:14,196 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 15:55:14,196 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 15:55:14,196 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 03:55:13" (1/3) ... [2019-12-07 15:55:14,197 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@18b0e6c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 03:55:14, skipping insertion in model container [2019-12-07 15:55:14,197 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 15:55:14,197 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:14" (2/3) ... [2019-12-07 15:55:14,197 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@18b0e6c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 03:55:14, skipping insertion in model container [2019-12-07 15:55:14,198 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 15:55:14,198 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:55:14" (3/3) ... [2019-12-07 15:55:14,199 INFO L371 chiAutomizerObserver]: Analyzing ICFG McCarthyIterative.c [2019-12-07 15:55:14,227 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 15:55:14,228 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 15:55:14,228 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 15:55:14,228 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:55:14,228 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:55:14,228 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 15:55:14,228 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:55:14,228 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 15:55:14,237 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-12-07 15:55:14,249 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 15:55:14,249 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:55:14,249 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:55:14,253 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 15:55:14,253 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 15:55:14,253 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 15:55:14,253 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-12-07 15:55:14,254 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 15:55:14,254 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:55:14,254 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:55:14,254 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 15:55:14,254 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 15:55:14,259 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 3#L12-2true [2019-12-07 15:55:14,259 INFO L796 eck$LassoCheckResult]: Loop: 3#L12-2true assume !!(main_~c~0 > 0); 6#L12true assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 3#L12-2true [2019-12-07 15:55:14,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:14,263 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-12-07 15:55:14,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:14,269 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152523382] [2019-12-07 15:55:14,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:14,331 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:14,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:14,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-12-07 15:55:14,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:14,333 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911997594] [2019-12-07 15:55:14,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:14,343 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:14,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:14,344 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-12-07 15:55:14,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:14,344 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774869292] [2019-12-07 15:55:14,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:14,353 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:14,387 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:55:14,388 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:55:14,388 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:55:14,388 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:55:14,388 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:55:14,388 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:14,388 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:55:14,388 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:55:14,388 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration1_Loop [2019-12-07 15:55:14,388 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:55:14,389 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:55:14,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:14,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:14,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:14,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:14,488 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:55:14,489 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:14,493 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:55:14,493 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:55:14,500 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:55:14,500 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:14,504 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:55:14,504 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:55:14,508 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:55:14,509 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:14,512 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:55:14,512 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:14,520 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:55:14,520 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:55:14,527 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:55:14,528 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:55:14,528 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:55:14,528 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:55:14,528 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:55:14,528 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:55:14,528 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:14,528 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:55:14,528 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:55:14,528 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration1_Loop [2019-12-07 15:55:14,529 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:55:14,529 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:55:14,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:14,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:14,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:14,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:14,585 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:55:14,589 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:14,592 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:55:14,594 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:55:14,594 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:55:14,594 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:55:14,595 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:55:14,599 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:55:14,599 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:55:14,603 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:14,606 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:55:14,608 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:55:14,608 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:55:14,608 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:55:14,608 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:55:14,611 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:55:14,611 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:55:14,614 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:14,618 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:55:14,619 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:55:14,619 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:55:14,619 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:55:14,620 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:55:14,620 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:55:14,620 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:55:14,621 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:55:14,623 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:55:14,625 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 15:55:14,625 INFO L444 ModelExtractionUtils]: 1 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_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:14,629 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:55:14,629 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:55:14,629 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:55:14,630 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-12-07 15:55:14,632 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:55:14,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:14,654 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:14,655 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:14,662 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:55:14,662 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:14,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:14,675 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 15:55:14,676 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2019-12-07 15:55:14,703 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 6 states. [2019-12-07 15:55:14,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:14,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 15:55:14,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-12-07 15:55:14,706 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2019-12-07 15:55:14,706 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:14,706 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2019-12-07 15:55:14,707 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:14,707 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2019-12-07 15:55:14,707 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:14,708 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2019-12-07 15:55:14,710 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 15:55:14,713 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2019-12-07 15:55:14,713 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-12-07 15:55:14,713 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-12-07 15:55:14,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-12-07 15:55:14,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:55:14,714 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 15:55:14,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-12-07 15:55:14,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-12-07 15:55:14,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 15:55:14,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-12-07 15:55:14,731 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 15:55:14,731 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 15:55:14,731 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 15:55:14,731 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-12-07 15:55:14,732 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 15:55:14,732 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:55:14,732 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:55:14,732 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 15:55:14,732 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 15:55:14,732 INFO L794 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 69#L12-2 assume !!(main_~c~0 > 0); 67#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 63#L12-2 [2019-12-07 15:55:14,732 INFO L796 eck$LassoCheckResult]: Loop: 63#L12-2 assume !!(main_~c~0 > 0); 64#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 63#L12-2 [2019-12-07 15:55:14,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:14,733 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-12-07 15:55:14,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:14,733 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310337406] [2019-12-07 15:55:14,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:14,742 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:14,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:14,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2019-12-07 15:55:14,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:14,743 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11241052] [2019-12-07 15:55:14,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:14,749 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:14,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:14,749 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2019-12-07 15:55:14,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:14,749 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211558051] [2019-12-07 15:55:14,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:14,761 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:14,773 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:55:14,773 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:55:14,773 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:55:14,774 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:55:14,774 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:55:14,774 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:14,774 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:55:14,774 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:55:14,774 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration2_Loop [2019-12-07 15:55:14,774 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:55:14,774 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:55:14,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:14,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:14,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:14,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:14,823 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:55:14,823 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:14,826 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:55:14,826 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:55:14,829 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:55:14,829 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:14,833 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:55:14,833 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:14,839 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:55:14,839 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:55:14,846 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:55:14,847 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:55:14,848 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:55:14,848 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:55:14,848 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:55:14,848 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:55:14,848 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:14,848 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:55:14,848 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:55:14,848 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration2_Loop [2019-12-07 15:55:14,848 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:55:14,848 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:55:14,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:14,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:14,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:14,860 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:14,897 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:55:14,897 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:14,900 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:55:14,901 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:55:14,901 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:55:14,901 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:55:14,902 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:55:14,904 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:55:14,904 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:55:14,908 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:14,912 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:55:14,914 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:55:14,914 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:55:14,914 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:55:14,914 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:55:14,914 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:55:14,915 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:55:14,915 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:55:14,918 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:55:14,922 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 15:55:14,922 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:14,931 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:55:14,931 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:55:14,932 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:55:14,932 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0) = 1*ULTIMATE.start_main_~c~0 Supporting invariants [] [2019-12-07 15:55:14,933 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:55:14,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:14,947 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:14,947 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:14,951 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:55:14,951 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:14,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:14,958 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 15:55:14,959 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-12-07 15:55:14,966 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 5 states. [2019-12-07 15:55:14,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:14,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 15:55:14,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-12-07 15:55:14,967 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2019-12-07 15:55:14,967 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:14,968 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-12-07 15:55:14,968 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:14,968 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2019-12-07 15:55:14,968 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:14,968 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2019-12-07 15:55:14,968 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 15:55:14,969 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2019-12-07 15:55:14,969 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-12-07 15:55:14,969 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-12-07 15:55:14,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2019-12-07 15:55:14,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:55:14,969 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-12-07 15:55:14,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2019-12-07 15:55:14,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-12-07 15:55:14,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 15:55:14,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2019-12-07 15:55:14,971 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-12-07 15:55:14,971 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-12-07 15:55:14,971 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 15:55:14,971 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2019-12-07 15:55:14,971 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 15:55:14,971 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:55:14,971 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:55:14,971 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2019-12-07 15:55:14,972 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 15:55:14,972 INFO L794 eck$LassoCheckResult]: Stem: 122#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 123#L12-2 assume !!(main_~c~0 > 0); 121#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 124#L12-2 assume !!(main_~c~0 > 0); 125#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 117#L12-2 [2019-12-07 15:55:14,972 INFO L796 eck$LassoCheckResult]: Loop: 117#L12-2 assume !!(main_~c~0 > 0); 118#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 117#L12-2 [2019-12-07 15:55:14,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:14,972 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 2 times [2019-12-07 15:55:14,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:14,972 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142008224] [2019-12-07 15:55:14,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:14,980 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:14,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:14,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2019-12-07 15:55:14,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:14,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040894353] [2019-12-07 15:55:14,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:14,984 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:14,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:14,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1364196307, now seen corresponding path program 2 times [2019-12-07 15:55:14,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:14,985 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668876203] [2019-12-07 15:55:14,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:14,994 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:15,008 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:55:15,008 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:55:15,008 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:55:15,008 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:55:15,008 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:55:15,008 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,008 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:55:15,008 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:55:15,008 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration3_Loop [2019-12-07 15:55:15,008 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:55:15,008 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:55:15,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,013 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,054 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:55:15,054 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,057 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:55:15,057 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,067 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:55:15,067 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:55:15,072 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:55:15,073 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:55:15,073 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:55:15,073 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:55:15,074 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:55:15,074 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:55:15,074 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,074 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:55:15,074 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:55:15,074 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration3_Loop [2019-12-07 15:55:15,074 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:55:15,074 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:55:15,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,122 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:55:15,122 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,124 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:55:15,126 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:55:15,126 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:55:15,126 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:55:15,126 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:55:15,126 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:55:15,127 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:55:15,127 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:55:15,129 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:55:15,132 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 15:55:15,133 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,135 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:55:15,135 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:55:15,136 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:55:15,136 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-12-07 15:55:15,137 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:55:15,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:15,155 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:15,155 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:15,159 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:55:15,159 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:15,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:15,160 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 15:55:15,160 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-12-07 15:55:15,167 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2019-12-07 15:55:15,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:15,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 15:55:15,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-12-07 15:55:15,168 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-12-07 15:55:15,168 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:15,168 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:55:15,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:15,182 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:15,182 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:15,186 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:55:15,186 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:15,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:15,186 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 15:55:15,186 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-12-07 15:55:15,192 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2019-12-07 15:55:15,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:15,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 15:55:15,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-12-07 15:55:15,193 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-12-07 15:55:15,193 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:15,193 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:55:15,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:15,207 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:15,207 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:15,211 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:55:15,211 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:15,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:15,212 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 15:55:15,212 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-12-07 15:55:15,218 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 15 states and 23 transitions. Complement of second has 4 states. [2019-12-07 15:55:15,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:15,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 15:55:15,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-12-07 15:55:15,219 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2019-12-07 15:55:15,219 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:15,219 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 2 letters. [2019-12-07 15:55:15,220 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:15,220 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 4 letters. [2019-12-07 15:55:15,220 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:15,220 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 23 transitions. [2019-12-07 15:55:15,221 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 15:55:15,221 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 19 transitions. [2019-12-07 15:55:15,221 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-12-07 15:55:15,221 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-12-07 15:55:15,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2019-12-07 15:55:15,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:55:15,222 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2019-12-07 15:55:15,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2019-12-07 15:55:15,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 5. [2019-12-07 15:55:15,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 15:55:15,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2019-12-07 15:55:15,223 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-12-07 15:55:15,223 INFO L591 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-12-07 15:55:15,223 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 15:55:15,223 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2019-12-07 15:55:15,223 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 15:55:15,223 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:55:15,223 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:55:15,223 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 15:55:15,224 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 15:55:15,224 INFO L794 eck$LassoCheckResult]: Stem: 265#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 261#L12-2 [2019-12-07 15:55:15,224 INFO L796 eck$LassoCheckResult]: Loop: 261#L12-2 assume !!(main_~c~0 > 0); 263#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 261#L12-2 [2019-12-07 15:55:15,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:15,224 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-12-07 15:55:15,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:15,224 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55037122] [2019-12-07 15:55:15,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:15,228 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:15,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:15,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1286, now seen corresponding path program 1 times [2019-12-07 15:55:15,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:15,229 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363228443] [2019-12-07 15:55:15,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:15,233 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:15,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:15,234 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 3 times [2019-12-07 15:55:15,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:15,234 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417118703] [2019-12-07 15:55:15,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:15,239 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:15,251 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:55:15,252 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:55:15,252 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:55:15,252 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:55:15,252 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:55:15,252 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,252 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:55:15,252 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:55:15,252 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration4_Loop [2019-12-07 15:55:15,252 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:55:15,252 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:55:15,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,301 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:55:15,301 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,304 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:55:15,305 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:55:15,308 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:55:15,309 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,313 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:55:15,313 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,320 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:55:15,320 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:55:15,328 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:55:15,328 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=1} Honda state: {ULTIMATE.start_main_~c~0=1} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=1}, {ULTIMATE.start_main_~c~0=0}] Lambdas: [0, 1, 0] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,339 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:55:15,340 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:55:15,343 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:55:15,344 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,347 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:55:15,347 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,354 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:55:15,354 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:55:15,359 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:55:15,361 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:55:15,361 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:55:15,361 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:55:15,361 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:55:15,362 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:55:15,362 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,362 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:55:15,362 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:55:15,362 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration4_Loop [2019-12-07 15:55:15,362 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:55:15,362 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:55:15,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,399 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:55:15,399 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,402 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:55:15,403 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:55:15,403 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:55:15,403 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:55:15,403 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:55:15,403 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:55:15,404 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:55:15,404 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:55:15,406 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,411 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:55:15,413 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:55:15,413 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:55:15,413 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:55:15,413 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:55:15,414 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:55:15,415 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:55:15,417 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,421 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:55:15,423 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:55:15,423 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:55:15,423 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:55:15,423 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:55:15,424 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:55:15,424 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:55:15,427 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,431 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:55:15,432 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:55:15,433 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:55:15,433 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:55:15,433 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:55:15,433 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:55:15,433 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:55:15,433 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:55:15,435 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:55:15,438 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 15:55:15,438 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_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,440 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:55:15,440 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:55:15,440 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:55:15,440 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 211 Supporting invariants [] [2019-12-07 15:55:15,442 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:55:15,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:15,454 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:15,455 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:15,457 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:55:15,457 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:15,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:15,457 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 15:55:15,457 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-12-07 15:55:15,462 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 11 states and 17 transitions. Complement of second has 5 states. [2019-12-07 15:55:15,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:15,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 15:55:15,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3 transitions. [2019-12-07 15:55:15,463 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 3 transitions. Stem has 1 letters. Loop has 2 letters. [2019-12-07 15:55:15,463 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:15,463 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 3 transitions. Stem has 3 letters. Loop has 2 letters. [2019-12-07 15:55:15,463 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:15,463 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 3 transitions. Stem has 1 letters. Loop has 4 letters. [2019-12-07 15:55:15,463 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:15,464 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 17 transitions. [2019-12-07 15:55:15,464 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 15:55:15,465 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 9 states and 13 transitions. [2019-12-07 15:55:15,465 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-12-07 15:55:15,465 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-12-07 15:55:15,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2019-12-07 15:55:15,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:55:15,465 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-12-07 15:55:15,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2019-12-07 15:55:15,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2019-12-07 15:55:15,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-12-07 15:55:15,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 12 transitions. [2019-12-07 15:55:15,467 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2019-12-07 15:55:15,467 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2019-12-07 15:55:15,467 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 15:55:15,467 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 12 transitions. [2019-12-07 15:55:15,467 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 15:55:15,467 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:55:15,467 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:55:15,468 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2019-12-07 15:55:15,469 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 15:55:15,469 INFO L794 eck$LassoCheckResult]: Stem: 310#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 306#L12-2 assume !!(main_~c~0 > 0); 307#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 313#L12-2 assume !!(main_~c~0 > 0); 311#L12 [2019-12-07 15:55:15,469 INFO L796 eck$LassoCheckResult]: Loop: 311#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 312#L12-2 assume !!(main_~c~0 > 0); 311#L12 [2019-12-07 15:55:15,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:15,469 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2019-12-07 15:55:15,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:15,469 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206868582] [2019-12-07 15:55:15,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:15,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:15,496 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206868582] [2019-12-07 15:55:15,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:55:15,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:55:15,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989066235] [2019-12-07 15:55:15,501 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:55:15,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:15,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2019-12-07 15:55:15,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:15,501 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431399061] [2019-12-07 15:55:15,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:15,505 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:15,516 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:55:15,516 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:55:15,516 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:55:15,516 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:55:15,516 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:55:15,516 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,516 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:55:15,516 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:55:15,516 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration5_Loop [2019-12-07 15:55:15,516 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:55:15,516 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:55:15,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,554 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:55:15,554 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,557 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:55:15,557 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,563 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:55:15,563 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:55:15,577 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:55:15,577 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=1}, {ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=0}] Lambdas: [1, 15, 7] Nus: [1, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,581 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:55:15,581 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,587 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:55:15,587 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:55:15,592 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:55:15,593 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:55:15,594 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:55:15,594 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:55:15,594 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:55:15,594 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:55:15,594 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,594 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:55:15,594 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:55:15,594 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration5_Loop [2019-12-07 15:55:15,594 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:55:15,594 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:55:15,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,633 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:55:15,633 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,636 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:55:15,637 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:55:15,637 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:55:15,637 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:55:15,637 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:55:15,637 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:55:15,638 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:55:15,638 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:55:15,639 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,644 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:55:15,645 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:55:15,645 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:55:15,645 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:55:15,645 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:55:15,646 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:55:15,646 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:55:15,649 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,660 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:55:15,661 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:55:15,661 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:55:15,662 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:55:15,662 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:55:15,662 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:55:15,662 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:55:15,662 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:55:15,664 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:55:15,666 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 15:55:15,666 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_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,668 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:55:15,668 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:55:15,669 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:55:15,669 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 211 Supporting invariants [] [2019-12-07 15:55:15,670 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:55:15,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:15,681 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:15,681 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:15,684 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:55:15,684 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:15,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:15,701 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 15:55:15,701 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2019-12-07 15:55:15,706 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 13 states and 17 transitions. Complement of second has 5 states. [2019-12-07 15:55:15,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:15,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 15:55:15,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-12-07 15:55:15,706 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 15:55:15,706 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:15,706 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:55:15,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:15,716 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:15,717 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:15,719 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:55:15,719 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:15,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:15,728 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 15:55:15,728 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2019-12-07 15:55:15,738 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 10 states and 14 transitions. Complement of second has 5 states. [2019-12-07 15:55:15,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:15,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 15:55:15,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-12-07 15:55:15,739 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 15:55:15,739 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:15,739 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:55:15,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:15,749 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:15,749 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:15,752 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:55:15,752 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:15,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:15,762 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 15:55:15,762 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2019-12-07 15:55:15,767 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 16 states and 20 transitions. Complement of second has 4 states. [2019-12-07 15:55:15,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:15,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 15:55:15,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-12-07 15:55:15,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 15:55:15,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:15,769 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2019-12-07 15:55:15,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:15,769 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2019-12-07 15:55:15,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:15,769 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 20 transitions. [2019-12-07 15:55:15,770 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-12-07 15:55:15,770 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 12 states and 16 transitions. [2019-12-07 15:55:15,770 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-12-07 15:55:15,770 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-12-07 15:55:15,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2019-12-07 15:55:15,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:55:15,771 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-12-07 15:55:15,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2019-12-07 15:55:15,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 7. [2019-12-07 15:55:15,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 15:55:15,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-12-07 15:55:15,771 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 15:55:15,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:15,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:55:15,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:55:15,774 INFO L87 Difference]: Start difference. First operand 7 states and 10 transitions. Second operand 4 states. [2019-12-07 15:55:15,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:15,785 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2019-12-07 15:55:15,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:55:15,786 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2019-12-07 15:55:15,786 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 15:55:15,786 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 8 states and 10 transitions. [2019-12-07 15:55:15,786 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-12-07 15:55:15,786 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-12-07 15:55:15,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2019-12-07 15:55:15,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:55:15,787 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2019-12-07 15:55:15,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2019-12-07 15:55:15,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-12-07 15:55:15,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 15:55:15,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2019-12-07 15:55:15,788 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-12-07 15:55:15,788 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-12-07 15:55:15,788 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 15:55:15,788 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2019-12-07 15:55:15,788 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 15:55:15,788 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:55:15,788 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:55:15,788 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 1, 1, 1] [2019-12-07 15:55:15,788 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2019-12-07 15:55:15,788 INFO L794 eck$LassoCheckResult]: Stem: 460#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 456#L12-2 assume !!(main_~c~0 > 0); 457#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 458#L12-2 assume !!(main_~c~0 > 0); 459#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 462#L12-2 assume !!(main_~c~0 > 0); 461#L12 [2019-12-07 15:55:15,788 INFO L796 eck$LassoCheckResult]: Loop: 461#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 458#L12-2 assume !!(main_~c~0 > 0); 459#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 462#L12-2 assume !!(main_~c~0 > 0); 461#L12 [2019-12-07 15:55:15,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:15,789 INFO L82 PathProgramCache]: Analyzing trace with hash 925824930, now seen corresponding path program 3 times [2019-12-07 15:55:15,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:15,789 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738440830] [2019-12-07 15:55:15,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:15,795 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:15,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:15,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1380409, now seen corresponding path program 1 times [2019-12-07 15:55:15,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:15,796 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147581457] [2019-12-07 15:55:15,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:15,801 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:15,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:15,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1848815782, now seen corresponding path program 4 times [2019-12-07 15:55:15,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:15,802 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593167036] [2019-12-07 15:55:15,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:15,811 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:15,837 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:55:15,837 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:55:15,837 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:55:15,837 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:55:15,837 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:55:15,837 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,837 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:55:15,837 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:55:15,837 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration6_Loop [2019-12-07 15:55:15,837 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:55:15,838 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:55:15,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,840 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,875 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:55:15,875 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,877 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:55:15,878 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:55:15,880 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:55:15,881 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,884 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:55:15,885 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:55:15,887 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:55:15,888 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,892 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:55:15,892 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,898 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:55:15,898 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:55:15,901 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:55:15,902 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:55:15,903 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:55:15,903 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:55:15,903 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:55:15,903 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:55:15,903 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,903 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:55:15,903 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:55:15,903 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration6_Loop [2019-12-07 15:55:15,903 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:55:15,903 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:55:15,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:15,943 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:55:15,943 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,946 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:55:15,947 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:55:15,947 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:55:15,947 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:55:15,947 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:55:15,948 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:55:15,948 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:55:15,948 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:55:15,950 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:55:15,952 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 15:55:15,952 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_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:15,955 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:55:15,955 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:55:15,955 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:55:15,955 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 201 Supporting invariants [] [2019-12-07 15:55:15,956 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:55:15,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:15,968 INFO L264 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:15,968 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:15,971 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 15:55:15,971 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:15,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:15,988 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-12-07 15:55:15,988 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2019-12-07 15:55:15,993 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 13 states and 16 transitions. Complement of second has 5 states. [2019-12-07 15:55:15,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:15,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 15:55:15,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-12-07 15:55:15,994 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 4 letters. [2019-12-07 15:55:15,994 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:15,994 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:55:16,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:16,006 INFO L264 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:16,006 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:16,009 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 15:55:16,009 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:16,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:16,030 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-12-07 15:55:16,030 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2019-12-07 15:55:16,044 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 11 states and 14 transitions. Complement of second has 5 states. [2019-12-07 15:55:16,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:16,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 15:55:16,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-12-07 15:55:16,045 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 6 letters. Loop has 4 letters. [2019-12-07 15:55:16,045 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:16,045 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:55:16,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:16,055 INFO L264 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:16,056 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:16,058 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 15:55:16,059 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:16,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:16,082 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-12-07 15:55:16,082 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2019-12-07 15:55:16,086 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 16 states and 19 transitions. Complement of second has 4 states. [2019-12-07 15:55:16,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:16,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 15:55:16,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-12-07 15:55:16,087 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2019-12-07 15:55:16,087 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:16,087 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:55:16,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:16,098 INFO L264 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:16,099 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:16,102 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 15:55:16,102 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:16,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:16,122 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-12-07 15:55:16,122 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2019-12-07 15:55:16,132 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 13 states and 18 transitions. Complement of second has 4 states. [2019-12-07 15:55:16,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:16,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 15:55:16,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-12-07 15:55:16,133 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 4 letters. [2019-12-07 15:55:16,133 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:16,133 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:55:16,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:16,144 INFO L264 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:16,145 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:16,147 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 15:55:16,147 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:16,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:16,164 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-12-07 15:55:16,165 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2019-12-07 15:55:16,204 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. Result 72 states and 96 transitions. Complement of second has 37 states 8 powerset states29 rank states. The highest rank that occured is 5 [2019-12-07 15:55:16,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:16,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 15:55:16,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2019-12-07 15:55:16,205 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 6 letters. Loop has 4 letters. [2019-12-07 15:55:16,205 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:16,205 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 10 letters. Loop has 4 letters. [2019-12-07 15:55:16,206 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:16,206 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 6 letters. Loop has 8 letters. [2019-12-07 15:55:16,207 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:16,207 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72 states and 96 transitions. [2019-12-07 15:55:16,209 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-12-07 15:55:16,210 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72 states to 27 states and 38 transitions. [2019-12-07 15:55:16,210 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2 [2019-12-07 15:55:16,210 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2 [2019-12-07 15:55:16,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 38 transitions. [2019-12-07 15:55:16,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:55:16,210 INFO L688 BuchiCegarLoop]: Abstraction has 27 states and 38 transitions. [2019-12-07 15:55:16,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 38 transitions. [2019-12-07 15:55:16,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 15. [2019-12-07 15:55:16,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 15:55:16,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2019-12-07 15:55:16,212 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2019-12-07 15:55:16,212 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2019-12-07 15:55:16,212 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-12-07 15:55:16,212 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 22 transitions. [2019-12-07 15:55:16,213 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-12-07 15:55:16,213 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:55:16,213 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:55:16,213 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [4, 2, 1, 1] [2019-12-07 15:55:16,213 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 1] [2019-12-07 15:55:16,213 INFO L794 eck$LassoCheckResult]: Stem: 822#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 823#L12-2 assume !!(main_~c~0 > 0); 826#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 825#L12-2 assume !!(main_~c~0 > 0); 830#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 829#L12-2 assume !!(main_~c~0 > 0); 828#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 827#L12-2 assume !!(main_~c~0 > 0); 824#L12 [2019-12-07 15:55:16,213 INFO L796 eck$LassoCheckResult]: Loop: 824#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 825#L12-2 assume !!(main_~c~0 > 0); 830#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 829#L12-2 assume !!(main_~c~0 > 0); 828#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 827#L12-2 assume !!(main_~c~0 > 0); 824#L12 [2019-12-07 15:55:16,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:16,214 INFO L82 PathProgramCache]: Analyzing trace with hash 659527871, now seen corresponding path program 5 times [2019-12-07 15:55:16,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:16,214 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864530239] [2019-12-07 15:55:16,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:16,229 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 15:55:16,229 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864530239] [2019-12-07 15:55:16,229 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616204890] [2019-12-07 15:55:16,230 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:16,249 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-12-07 15:55:16,249 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:16,250 INFO L264 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 15:55:16,250 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:16,252 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 15:55:16,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:16,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-12-07 15:55:16,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130384212] [2019-12-07 15:55:16,252 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 15:55:16,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:16,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1326573462, now seen corresponding path program 2 times [2019-12-07 15:55:16,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:16,253 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256571247] [2019-12-07 15:55:16,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:16,258 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:16,290 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:55:16,290 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:55:16,290 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:55:16,290 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:55:16,290 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:55:16,290 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:16,290 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:55:16,290 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:55:16,290 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration7_Loop [2019-12-07 15:55:16,291 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:55:16,291 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:55:16,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:16,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:16,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:16,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:16,335 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:55:16,336 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:16,345 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:55:16,345 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:55:16,348 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:55:16,349 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:16,352 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:55:16,352 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:55:16,355 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:55:16,355 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_13=0} Honda state: {v_rep~unnamed0~0~false_13=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 48 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:16,359 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:55:16,359 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 49 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 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:16,365 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:55:16,366 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:55:16,407 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:55:16,408 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:55:16,408 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:55:16,408 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:55:16,408 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:55:16,408 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:55:16,408 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:16,408 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:55:16,408 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:55:16,408 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration7_Loop [2019-12-07 15:55:16,408 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:55:16,408 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:55:16,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:16,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:16,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:16,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:16,448 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:55:16,448 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 50 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 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:16,451 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:55:16,452 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:55:16,453 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:55:16,453 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:55:16,453 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:55:16,454 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:55:16,454 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:55:16,457 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 51 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:16,461 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:55:16,462 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:55:16,462 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:55:16,462 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:55:16,462 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:55:16,464 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:55:16,464 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:55:16,467 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 52 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 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:16,471 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:55:16,472 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:55:16,472 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:55:16,472 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:55:16,472 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:55:16,472 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:55:16,473 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:55:16,473 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:55:16,475 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:55:16,477 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 15:55:16,477 INFO L444 ModelExtractionUtils]: 1 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_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 53 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:16,479 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:55:16,479 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:55:16,479 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:55:16,479 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0) = 1*ULTIMATE.start_main_~c~0 Supporting invariants [] [2019-12-07 15:55:16,480 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:55:16,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:16,491 INFO L264 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:16,491 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:16,494 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 15:55:16,495 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:16,505 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 15:55:16,505 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-12-07 15:55:16,506 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 9 Second operand 5 states. [2019-12-07 15:55:16,525 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 9. Second operand 5 states. Result 61 states and 87 transitions. Complement of second has 9 states. [2019-12-07 15:55:16,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:16,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 15:55:16,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2019-12-07 15:55:16,526 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 8 letters. Loop has 6 letters. [2019-12-07 15:55:16,526 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:16,526 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 14 letters. Loop has 6 letters. [2019-12-07 15:55:16,526 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:16,526 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 8 letters. Loop has 12 letters. [2019-12-07 15:55:16,526 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:16,526 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 87 transitions. [2019-12-07 15:55:16,528 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-12-07 15:55:16,528 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 52 states and 75 transitions. [2019-12-07 15:55:16,528 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-12-07 15:55:16,528 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-12-07 15:55:16,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 75 transitions. [2019-12-07 15:55:16,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:55:16,528 INFO L688 BuchiCegarLoop]: Abstraction has 52 states and 75 transitions. [2019-12-07 15:55:16,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 75 transitions. [2019-12-07 15:55:16,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2019-12-07 15:55:16,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-12-07 15:55:16,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 67 transitions. [2019-12-07 15:55:16,531 INFO L711 BuchiCegarLoop]: Abstraction has 46 states and 67 transitions. [2019-12-07 15:55:16,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:16,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:55:16,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:55:16,532 INFO L87 Difference]: Start difference. First operand 46 states and 67 transitions. Second operand 5 states. [2019-12-07 15:55:16,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:16,542 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2019-12-07 15:55:16,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 15:55:16,542 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 51 transitions. [2019-12-07 15:55:16,543 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-12-07 15:55:16,543 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 27 states and 36 transitions. [2019-12-07 15:55:16,544 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2 [2019-12-07 15:55:16,544 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2 [2019-12-07 15:55:16,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 36 transitions. [2019-12-07 15:55:16,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:55:16,544 INFO L688 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2019-12-07 15:55:16,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 36 transitions. [2019-12-07 15:55:16,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2019-12-07 15:55:16,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 15:55:16,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2019-12-07 15:55:16,545 INFO L711 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2019-12-07 15:55:16,545 INFO L591 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2019-12-07 15:55:16,545 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-12-07 15:55:16,545 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 30 transitions. [2019-12-07 15:55:16,546 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-12-07 15:55:16,546 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:55:16,546 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:55:16,546 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 2, 2, 1] [2019-12-07 15:55:16,546 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 1] [2019-12-07 15:55:16,546 INFO L794 eck$LassoCheckResult]: Stem: 1076#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 1077#L12-2 assume !!(main_~c~0 > 0); 1093#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1091#L12-2 assume !!(main_~c~0 > 0); 1084#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1079#L12-2 assume !!(main_~c~0 > 0); 1085#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1083#L12-2 assume !!(main_~c~0 > 0); 1082#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1081#L12-2 assume !!(main_~c~0 > 0); 1078#L12 [2019-12-07 15:55:16,546 INFO L796 eck$LassoCheckResult]: Loop: 1078#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1079#L12-2 assume !!(main_~c~0 > 0); 1085#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1083#L12-2 assume !!(main_~c~0 > 0); 1082#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1081#L12-2 assume !!(main_~c~0 > 0); 1078#L12 [2019-12-07 15:55:16,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:16,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1791617062, now seen corresponding path program 6 times [2019-12-07 15:55:16,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:16,547 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990098127] [2019-12-07 15:55:16,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:16,554 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:16,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:16,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1326573462, now seen corresponding path program 3 times [2019-12-07 15:55:16,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:16,554 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839780523] [2019-12-07 15:55:16,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:16,559 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:16,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:16,560 INFO L82 PathProgramCache]: Analyzing trace with hash 709032111, now seen corresponding path program 7 times [2019-12-07 15:55:16,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:16,560 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227822813] [2019-12-07 15:55:16,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:16,605 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:16,605 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227822813] [2019-12-07 15:55:16,605 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992565530] [2019-12-07 15:55:16,605 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:16,622 INFO L264 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 15:55:16,623 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:16,652 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 41 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 15:55:16,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:16,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2019-12-07 15:55:16,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105568105] [2019-12-07 15:55:16,685 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:55:16,685 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:55:16,685 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:55:16,685 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:55:16,685 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:55:16,685 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:16,686 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:55:16,686 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:55:16,686 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration8_Loop [2019-12-07 15:55:16,686 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:55:16,686 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:55:16,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:16,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:16,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:16,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:16,723 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:55:16,723 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 55 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:16,726 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:55:16,726 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:55:16,729 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:55:16,729 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 56 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:16,733 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:55:16,733 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 57 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 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:16,738 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:55:16,738 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:55:16,794 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:55:16,795 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:55:16,795 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:55:16,795 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:55:16,795 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:55:16,795 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:55:16,795 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:16,795 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:55:16,795 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:55:16,795 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration8_Loop [2019-12-07 15:55:16,796 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:55:16,796 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:55:16,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:16,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:16,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:16,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:16,837 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:55:16,837 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 58 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 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:16,840 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:55:16,840 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:55:16,841 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:55:16,841 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:55:16,841 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:55:16,842 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:55:16,842 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:55:16,844 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 59 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 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:16,848 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:55:16,849 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:55:16,849 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:55:16,849 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:55:16,849 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:55:16,849 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:55:16,850 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:55:16,850 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:55:16,852 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:55:16,854 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 15:55:16,854 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 60 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 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:16,859 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:55:16,860 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:55:16,860 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:55:16,860 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-12-07 15:55:16,861 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:55:16,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:16,873 INFO L264 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:16,873 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:16,876 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 15:55:16,877 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:16,893 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-12-07 15:55:16,893 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 5 states. [2019-12-07 15:55:16,907 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 5 states. Result 45 states and 56 transitions. Complement of second has 7 states. [2019-12-07 15:55:16,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:16,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 15:55:16,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2019-12-07 15:55:16,907 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 10 letters. Loop has 6 letters. [2019-12-07 15:55:16,907 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:16,907 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:55:16,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:16,921 INFO L264 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:16,922 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:16,926 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 15:55:16,927 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:16,945 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:16,946 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2019-12-07 15:55:16,946 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 5 states. [2019-12-07 15:55:16,960 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 5 states. Result 45 states and 56 transitions. Complement of second has 7 states. [2019-12-07 15:55:16,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:16,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 15:55:16,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2019-12-07 15:55:16,960 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 10 letters. Loop has 6 letters. [2019-12-07 15:55:16,960 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:16,960 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:55:16,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:16,971 INFO L264 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:16,972 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:16,975 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 15:55:16,976 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:16,990 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:16,991 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-12-07 15:55:16,991 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 5 states. [2019-12-07 15:55:17,009 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 5 states. Result 75 states and 99 transitions. Complement of second has 13 states. [2019-12-07 15:55:17,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:17,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 15:55:17,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2019-12-07 15:55:17,009 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2019-12-07 15:55:17,010 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:17,010 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 16 letters. Loop has 6 letters. [2019-12-07 15:55:17,010 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:17,010 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 12 letters. [2019-12-07 15:55:17,011 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:17,011 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 99 transitions. [2019-12-07 15:55:17,013 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 22 [2019-12-07 15:55:17,013 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 52 states and 71 transitions. [2019-12-07 15:55:17,013 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-12-07 15:55:17,014 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-12-07 15:55:17,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 71 transitions. [2019-12-07 15:55:17,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:55:17,014 INFO L688 BuchiCegarLoop]: Abstraction has 52 states and 71 transitions. [2019-12-07 15:55:17,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 71 transitions. [2019-12-07 15:55:17,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2019-12-07 15:55:17,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-07 15:55:17,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 58 transitions. [2019-12-07 15:55:17,017 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 58 transitions. [2019-12-07 15:55:17,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:17,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-12-07 15:55:17,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2019-12-07 15:55:17,018 INFO L87 Difference]: Start difference. First operand 40 states and 58 transitions. Second operand 15 states. [2019-12-07 15:55:17,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:17,123 INFO L93 Difference]: Finished difference Result 143 states and 181 transitions. [2019-12-07 15:55:17,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-12-07 15:55:17,124 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 143 states and 181 transitions. [2019-12-07 15:55:17,125 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 40 [2019-12-07 15:55:17,126 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 143 states to 109 states and 145 transitions. [2019-12-07 15:55:17,126 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-12-07 15:55:17,126 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2019-12-07 15:55:17,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 109 states and 145 transitions. [2019-12-07 15:55:17,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:55:17,127 INFO L688 BuchiCegarLoop]: Abstraction has 109 states and 145 transitions. [2019-12-07 15:55:17,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states and 145 transitions. [2019-12-07 15:55:17,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 33. [2019-12-07 15:55:17,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-07 15:55:17,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2019-12-07 15:55:17,129 INFO L711 BuchiCegarLoop]: Abstraction has 33 states and 43 transitions. [2019-12-07 15:55:17,129 INFO L591 BuchiCegarLoop]: Abstraction has 33 states and 43 transitions. [2019-12-07 15:55:17,129 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-12-07 15:55:17,129 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 43 transitions. [2019-12-07 15:55:17,130 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-12-07 15:55:17,130 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:55:17,130 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:55:17,130 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2019-12-07 15:55:17,130 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [4, 2, 2] [2019-12-07 15:55:17,130 INFO L794 eck$LassoCheckResult]: Stem: 1722#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 1724#L12-2 assume !!(main_~c~0 > 0); 1738#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1735#L12-2 assume !!(main_~c~0 > 0); 1729#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1718#L12-2 [2019-12-07 15:55:17,130 INFO L796 eck$LassoCheckResult]: Loop: 1718#L12-2 assume !!(main_~c~0 > 0); 1719#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1728#L12-2 assume !!(main_~c~0 > 0); 1734#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1733#L12-2 assume !!(main_~c~0 > 0); 1725#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1726#L12-2 assume !!(main_~c~0 > 0); 1729#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1718#L12-2 [2019-12-07 15:55:17,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:17,130 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 4 times [2019-12-07 15:55:17,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:17,131 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570151406] [2019-12-07 15:55:17,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:17,135 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:17,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:17,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1687002897, now seen corresponding path program 4 times [2019-12-07 15:55:17,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:17,135 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383429298] [2019-12-07 15:55:17,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:17,146 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 15:55:17,146 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383429298] [2019-12-07 15:55:17,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:55:17,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 15:55:17,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021924715] [2019-12-07 15:55:17,147 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 15:55:17,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:17,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:55:17,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:55:17,147 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. cyclomatic complexity: 14 Second operand 4 states. [2019-12-07 15:55:17,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:17,153 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2019-12-07 15:55:17,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:55:17,153 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 63 transitions. [2019-12-07 15:55:17,154 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2019-12-07 15:55:17,154 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 39 states and 47 transitions. [2019-12-07 15:55:17,154 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-12-07 15:55:17,154 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-12-07 15:55:17,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 47 transitions. [2019-12-07 15:55:17,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:55:17,155 INFO L688 BuchiCegarLoop]: Abstraction has 39 states and 47 transitions. [2019-12-07 15:55:17,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 47 transitions. [2019-12-07 15:55:17,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2019-12-07 15:55:17,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-07 15:55:17,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2019-12-07 15:55:17,157 INFO L711 BuchiCegarLoop]: Abstraction has 33 states and 41 transitions. [2019-12-07 15:55:17,157 INFO L591 BuchiCegarLoop]: Abstraction has 33 states and 41 transitions. [2019-12-07 15:55:17,157 INFO L424 BuchiCegarLoop]: ======== Iteration 10============ [2019-12-07 15:55:17,157 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 41 transitions. [2019-12-07 15:55:17,158 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2019-12-07 15:55:17,158 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:55:17,158 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:55:17,158 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2019-12-07 15:55:17,158 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [5, 3, 2] [2019-12-07 15:55:17,158 INFO L794 eck$LassoCheckResult]: Stem: 1813#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 1815#L12-2 assume !!(main_~c~0 > 0); 1829#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1828#L12-2 assume !!(main_~c~0 > 0); 1821#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1809#L12-2 [2019-12-07 15:55:17,158 INFO L796 eck$LassoCheckResult]: Loop: 1809#L12-2 assume !!(main_~c~0 > 0); 1810#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1819#L12-2 assume !!(main_~c~0 > 0); 1826#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1823#L12-2 assume !!(main_~c~0 > 0); 1816#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1817#L12-2 assume !!(main_~c~0 > 0); 1827#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1824#L12-2 assume !!(main_~c~0 > 0); 1820#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1809#L12-2 [2019-12-07 15:55:17,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:17,159 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 5 times [2019-12-07 15:55:17,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:17,159 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848829238] [2019-12-07 15:55:17,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:17,163 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:17,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:17,163 INFO L82 PathProgramCache]: Analyzing trace with hash 2007111828, now seen corresponding path program 5 times [2019-12-07 15:55:17,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:17,164 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888186388] [2019-12-07 15:55:17,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:17,170 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:17,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:17,170 INFO L82 PathProgramCache]: Analyzing trace with hash -254222659, now seen corresponding path program 8 times [2019-12-07 15:55:17,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:17,170 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32978937] [2019-12-07 15:55:17,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:17,180 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:17,230 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:55:17,230 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:55:17,230 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:55:17,230 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:55:17,230 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:55:17,231 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:17,231 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:55:17,231 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:55:17,231 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration10_Loop [2019-12-07 15:55:17,231 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:55:17,231 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:55:17,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:17,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:17,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:17,241 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:17,271 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:55:17,271 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 61 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 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:17,274 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:55:17,274 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:55:17,277 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 15:55:17,277 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 62 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 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:17,281 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:55:17,281 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 63 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 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:17,287 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:55:17,287 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:55:17,293 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:55:17,294 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:55:17,294 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:55:17,294 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:55:17,294 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:55:17,294 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:55:17,294 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:17,294 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:55:17,294 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:55:17,294 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration10_Loop [2019-12-07 15:55:17,295 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:55:17,295 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:55:17,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:17,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:17,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:17,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:17,332 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:55:17,332 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 64 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 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:17,339 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:55:17,340 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:55:17,340 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:55:17,340 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:55:17,340 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:55:17,341 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:55:17,341 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:55:17,344 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 65 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 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:17,348 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:55:17,349 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:55:17,349 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:55:17,349 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:55:17,349 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:55:17,350 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:55:17,350 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:55:17,350 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:55:17,352 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:55:17,356 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 15:55:17,356 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 66 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 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:17,358 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:55:17,358 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:55:17,359 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:55:17,359 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-12-07 15:55:17,360 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:55:17,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:17,372 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:17,373 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:17,377 INFO L264 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 15:55:17,378 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:17,404 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:17,405 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2019-12-07 15:55:17,405 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2019-12-07 15:55:17,408 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12. Second operand 7 states. Result 37 states and 47 transitions. Complement of second has 5 states. [2019-12-07 15:55:17,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:17,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 15:55:17,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-12-07 15:55:17,409 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 10 letters. [2019-12-07 15:55:17,409 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:17,409 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:55:17,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:17,419 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:17,419 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:17,423 INFO L264 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 15:55:17,424 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:17,450 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2019-12-07 15:55:17,450 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2019-12-07 15:55:17,453 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12. Second operand 7 states. Result 37 states and 47 transitions. Complement of second has 5 states. [2019-12-07 15:55:17,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:17,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 15:55:17,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-12-07 15:55:17,453 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 10 letters. [2019-12-07 15:55:17,454 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:17,454 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:55:17,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:17,467 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:17,467 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:17,472 INFO L264 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 15:55:17,473 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:17,502 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:17,502 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2019-12-07 15:55:17,502 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2019-12-07 15:55:17,508 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12. Second operand 7 states. Result 46 states and 60 transitions. Complement of second has 4 states. [2019-12-07 15:55:17,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:17,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 15:55:17,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-12-07 15:55:17,508 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 10 letters. [2019-12-07 15:55:17,509 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:17,509 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:55:17,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:17,520 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:17,520 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:17,525 INFO L264 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 15:55:17,525 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:17,554 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:17,554 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2019-12-07 15:55:17,554 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2019-12-07 15:55:17,573 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12. Second operand 7 states. Result 63 states and 75 transitions. Complement of second has 8 states. [2019-12-07 15:55:17,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:17,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 15:55:17,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2019-12-07 15:55:17,574 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 5 letters. Loop has 10 letters. [2019-12-07 15:55:17,574 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:17,574 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:55:17,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:17,584 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:17,584 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:17,589 INFO L264 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 15:55:17,590 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:17,620 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:17,620 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2019-12-07 15:55:17,621 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2019-12-07 15:55:17,662 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:17,663 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:17,663 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:17,663 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:17,664 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:17,687 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:17,687 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:17,687 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:17,688 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:17,688 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:17,688 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:17,688 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:17,688 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:17,693 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. Result 404 states and 547 transitions. Complement of second has 85 states 12 powerset states73 rank states. The highest rank that occured is 7 [2019-12-07 15:55:17,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:17,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 15:55:17,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 29 transitions. [2019-12-07 15:55:17,694 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 29 transitions. Stem has 5 letters. Loop has 10 letters. [2019-12-07 15:55:17,694 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:17,694 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 29 transitions. Stem has 15 letters. Loop has 10 letters. [2019-12-07 15:55:17,695 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:17,695 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 29 transitions. Stem has 5 letters. Loop has 20 letters. [2019-12-07 15:55:17,696 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:17,696 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 404 states and 547 transitions. [2019-12-07 15:55:17,700 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2019-12-07 15:55:17,701 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 404 states to 145 states and 187 transitions. [2019-12-07 15:55:17,701 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-12-07 15:55:17,701 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-12-07 15:55:17,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 145 states and 187 transitions. [2019-12-07 15:55:17,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:55:17,701 INFO L688 BuchiCegarLoop]: Abstraction has 145 states and 187 transitions. [2019-12-07 15:55:17,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states and 187 transitions. [2019-12-07 15:55:17,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 96. [2019-12-07 15:55:17,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-12-07 15:55:17,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 129 transitions. [2019-12-07 15:55:17,705 INFO L711 BuchiCegarLoop]: Abstraction has 96 states and 129 transitions. [2019-12-07 15:55:17,706 INFO L591 BuchiCegarLoop]: Abstraction has 96 states and 129 transitions. [2019-12-07 15:55:17,706 INFO L424 BuchiCegarLoop]: ======== Iteration 11============ [2019-12-07 15:55:17,706 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states and 129 transitions. [2019-12-07 15:55:17,706 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2019-12-07 15:55:17,706 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:55:17,706 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:55:17,706 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2019-12-07 15:55:17,707 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [7, 4, 3] [2019-12-07 15:55:17,707 INFO L794 eck$LassoCheckResult]: Stem: 2806#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 2809#L12-2 assume !!(main_~c~0 > 0); 2833#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2829#L12-2 assume !!(main_~c~0 > 0); 2815#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2802#L12-2 [2019-12-07 15:55:17,707 INFO L796 eck$LassoCheckResult]: Loop: 2802#L12-2 assume !!(main_~c~0 > 0); 2803#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 2864#L12-2 assume !!(main_~c~0 > 0); 2857#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 2855#L12-2 assume !!(main_~c~0 > 0); 2849#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2848#L12-2 assume !!(main_~c~0 > 0); 2847#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 2839#L12-2 assume !!(main_~c~0 > 0); 2818#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2830#L12-2 assume !!(main_~c~0 > 0); 2828#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 2826#L12-2 assume !!(main_~c~0 > 0); 2814#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2802#L12-2 [2019-12-07 15:55:17,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:17,707 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 6 times [2019-12-07 15:55:17,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:17,707 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503615176] [2019-12-07 15:55:17,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:17,711 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:17,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:17,711 INFO L82 PathProgramCache]: Analyzing trace with hash 822111324, now seen corresponding path program 6 times [2019-12-07 15:55:17,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:17,711 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084163710] [2019-12-07 15:55:17,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:17,718 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:17,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:17,719 INFO L82 PathProgramCache]: Analyzing trace with hash 128316933, now seen corresponding path program 9 times [2019-12-07 15:55:17,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:17,719 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133568874] [2019-12-07 15:55:17,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:17,727 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:17,801 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:55:17,801 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:55:17,801 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:55:17,801 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:55:17,801 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:55:17,801 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:17,801 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:55:17,801 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:55:17,801 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration11_Loop [2019-12-07 15:55:17,801 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:55:17,801 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:55:17,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:17,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:17,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:17,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:17,837 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:55:17,837 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 67 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 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:17,840 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:55:17,840 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 68 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 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:17,845 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:55:17,845 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:55:17,848 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:55:17,849 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:55:17,849 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:55:17,849 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:55:17,849 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:55:17,849 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:55:17,849 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:17,849 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:55:17,849 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:55:17,849 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration11_Loop [2019-12-07 15:55:17,849 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:55:17,850 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:55:17,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:17,855 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:17,857 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:17,859 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:17,886 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:55:17,886 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 69 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 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:17,888 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:55:17,889 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:55:17,889 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:55:17,889 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:55:17,890 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:55:17,890 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:55:17,890 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:55:17,890 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:55:17,892 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:55:17,894 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 15:55:17,894 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 70 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 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:17,899 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:55:17,899 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:55:17,899 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:55:17,899 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-12-07 15:55:17,900 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:55:17,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:17,911 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:17,911 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:17,916 INFO L264 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 15:55:17,916 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:17,963 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:17,963 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2019-12-07 15:55:17,964 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2019-12-07 15:55:17,967 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42. Second operand 9 states. Result 104 states and 145 transitions. Complement of second has 5 states. [2019-12-07 15:55:17,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:17,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 15:55:17,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-12-07 15:55:17,968 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 14 letters. [2019-12-07 15:55:17,968 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:17,968 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:55:17,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:17,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:17,978 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:17,978 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:17,983 INFO L264 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 15:55:17,983 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:18,027 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:18,027 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 7 loop predicates [2019-12-07 15:55:18,027 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2019-12-07 15:55:18,031 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42. Second operand 9 states. Result 104 states and 145 transitions. Complement of second has 5 states. [2019-12-07 15:55:18,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:18,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 15:55:18,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-12-07 15:55:18,031 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 14 letters. [2019-12-07 15:55:18,031 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:18,031 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:55:18,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:18,041 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:18,041 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:18,045 INFO L264 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 15:55:18,046 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:18,088 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:18,088 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2019-12-07 15:55:18,088 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2019-12-07 15:55:18,092 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42. Second operand 9 states. Result 146 states and 191 transitions. Complement of second has 4 states. [2019-12-07 15:55:18,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:18,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 15:55:18,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-12-07 15:55:18,093 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 14 letters. [2019-12-07 15:55:18,093 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:18,093 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:55:18,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:18,104 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:18,105 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:18,110 INFO L264 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 15:55:18,111 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:18,161 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:18,161 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 7 loop predicates [2019-12-07 15:55:18,161 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2019-12-07 15:55:18,180 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42. Second operand 9 states. Result 172 states and 219 transitions. Complement of second has 8 states. [2019-12-07 15:55:18,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:18,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 15:55:18,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2019-12-07 15:55:18,181 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 5 letters. Loop has 14 letters. [2019-12-07 15:55:18,181 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:18,181 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:55:18,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:18,190 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:18,191 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:18,195 INFO L264 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 15:55:18,196 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:18,236 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:18,236 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2019-12-07 15:55:18,237 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2019-12-07 15:55:18,268 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,269 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,269 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,269 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,270 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,270 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,270 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,270 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,271 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,271 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,271 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,271 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,299 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,299 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,300 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,300 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,301 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,301 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,301 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,301 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,302 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,302 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,302 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,302 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,302 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,302 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,302 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,302 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,303 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,304 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,304 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,304 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,304 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,304 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,304 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,304 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,333 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,333 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,333 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,333 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,333 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,333 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,335 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,335 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,335 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,335 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,335 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,335 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,335 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,336 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,336 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,336 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,336 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,336 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,336 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,336 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,336 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,336 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,337 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,337 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,337 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,337 WARN L278 uchiComplementFKVNwa]: big8 [2019-12-07 15:55:18,353 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. Result 1787 states and 2714 transitions. Complement of second has 144 states 16 powerset states128 rank states. The highest rank that occured is 7 [2019-12-07 15:55:18,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 7 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:18,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 15:55:18,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 39 transitions. [2019-12-07 15:55:18,354 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 5 letters. Loop has 14 letters. [2019-12-07 15:55:18,355 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:18,355 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 19 letters. Loop has 14 letters. [2019-12-07 15:55:18,355 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:18,355 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 5 letters. Loop has 28 letters. [2019-12-07 15:55:18,356 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:18,356 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1787 states and 2714 transitions. [2019-12-07 15:55:18,367 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2019-12-07 15:55:18,370 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1787 states to 471 states and 636 transitions. [2019-12-07 15:55:18,370 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-12-07 15:55:18,370 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-12-07 15:55:18,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 471 states and 636 transitions. [2019-12-07 15:55:18,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:55:18,370 INFO L688 BuchiCegarLoop]: Abstraction has 471 states and 636 transitions. [2019-12-07 15:55:18,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states and 636 transitions. [2019-12-07 15:55:18,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 260. [2019-12-07 15:55:18,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2019-12-07 15:55:18,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 376 transitions. [2019-12-07 15:55:18,380 INFO L711 BuchiCegarLoop]: Abstraction has 260 states and 376 transitions. [2019-12-07 15:55:18,380 INFO L591 BuchiCegarLoop]: Abstraction has 260 states and 376 transitions. [2019-12-07 15:55:18,380 INFO L424 BuchiCegarLoop]: ======== Iteration 12============ [2019-12-07 15:55:18,380 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 260 states and 376 transitions. [2019-12-07 15:55:18,381 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2019-12-07 15:55:18,381 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:55:18,381 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:55:18,382 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2019-12-07 15:55:18,382 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [9, 5, 4] [2019-12-07 15:55:18,382 INFO L794 eck$LassoCheckResult]: Stem: 5719#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 5724#L12-2 assume !!(main_~c~0 > 0); 5765#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5737#L12-2 assume !!(main_~c~0 > 0); 5733#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5715#L12-2 [2019-12-07 15:55:18,382 INFO L796 eck$LassoCheckResult]: Loop: 5715#L12-2 assume !!(main_~c~0 > 0); 5716#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 5934#L12-2 assume !!(main_~c~0 > 0); 5861#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 5859#L12-2 assume !!(main_~c~0 > 0); 5857#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5855#L12-2 assume !!(main_~c~0 > 0); 5852#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 5841#L12-2 assume !!(main_~c~0 > 0); 5842#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5824#L12-2 assume !!(main_~c~0 > 0); 5825#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 5816#L12-2 assume !!(main_~c~0 > 0); 5736#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5759#L12-2 assume !!(main_~c~0 > 0); 5738#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 5735#L12-2 assume !!(main_~c~0 > 0); 5732#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5715#L12-2 [2019-12-07 15:55:18,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:18,382 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 7 times [2019-12-07 15:55:18,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:18,382 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430825474] [2019-12-07 15:55:18,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:18,386 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:18,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:18,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1476420572, now seen corresponding path program 7 times [2019-12-07 15:55:18,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:18,386 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367664508] [2019-12-07 15:55:18,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:18,393 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:18,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:18,394 INFO L82 PathProgramCache]: Analyzing trace with hash 939927885, now seen corresponding path program 10 times [2019-12-07 15:55:18,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:18,394 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173495554] [2019-12-07 15:55:18,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:55:18,402 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:55:18,504 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:55:18,504 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:55:18,505 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:55:18,505 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:55:18,505 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 15:55:18,505 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:18,505 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:55:18,505 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:55:18,505 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration12_Loop [2019-12-07 15:55:18,505 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:55:18,505 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:55:18,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:18,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:18,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:18,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:18,541 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:55:18,541 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 71 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 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:18,544 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 15:55:18,544 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 72 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 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:18,549 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 15:55:18,549 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 15:55:18,592 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 15:55:18,593 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:55:18,593 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:55:18,593 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:55:18,593 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:55:18,594 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:55:18,594 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:18,594 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:55:18,594 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:55:18,594 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration12_Loop [2019-12-07 15:55:18,594 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:55:18,594 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:55:18,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:18,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:18,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:18,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:55:18,631 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:55:18,631 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 73 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 73 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:18,633 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 15:55:18,634 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:55:18,634 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:55:18,634 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:55:18,634 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:55:18,634 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:55:18,635 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:55:18,635 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:55:18,636 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:55:18,638 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 15:55:18,638 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a84aec4b-09e2-4826-bea7-dd5df0373672/bin/uautomizer/z3 Starting monitored process 74 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 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:55:18,640 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:55:18,640 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 15:55:18,641 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:55:18,641 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0) = 1*ULTIMATE.start_main_~c~0 Supporting invariants [] [2019-12-07 15:55:18,642 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 15:55:18,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:18,652 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:18,652 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:18,657 INFO L264 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 15:55:18,657 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:18,688 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-07 15:55:18,688 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2019-12-07 15:55:18,688 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137 Second operand 8 states. [2019-12-07 15:55:18,696 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137. Second operand 8 states. Result 276 states and 420 transitions. Complement of second has 5 states. [2019-12-07 15:55:18,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:18,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-12-07 15:55:18,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-12-07 15:55:18,697 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 18 letters. [2019-12-07 15:55:18,697 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:18,697 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:55:18,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:18,706 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:18,706 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:18,713 INFO L264 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 15:55:18,714 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:18,748 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-07 15:55:18,748 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 6 loop predicates [2019-12-07 15:55:18,748 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137 Second operand 8 states. [2019-12-07 15:55:18,754 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137. Second operand 8 states. Result 276 states and 420 transitions. Complement of second has 5 states. [2019-12-07 15:55:18,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:18,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-12-07 15:55:18,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-12-07 15:55:18,755 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 18 letters. [2019-12-07 15:55:18,755 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:18,755 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:55:18,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:18,766 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:18,766 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:18,781 INFO L264 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 15:55:18,781 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:18,816 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-07 15:55:18,817 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2019-12-07 15:55:18,817 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137 Second operand 8 states. [2019-12-07 15:55:18,830 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137. Second operand 8 states. Result 392 states and 547 transitions. Complement of second has 7 states. [2019-12-07 15:55:18,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:18,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-12-07 15:55:18,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2019-12-07 15:55:18,830 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 18 letters. [2019-12-07 15:55:18,830 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:18,831 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:55:18,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:18,842 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:55:18,842 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:18,849 INFO L264 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 15:55:18,849 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:18,883 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-07 15:55:18,883 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 6 loop predicates [2019-12-07 15:55:18,883 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137 Second operand 8 states. [2019-12-07 15:55:18,914 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137. Second operand 8 states. Result 511 states and 724 transitions. Complement of second has 12 states. [2019-12-07 15:55:18,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2019-12-07 15:55:18,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-12-07 15:55:18,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2019-12-07 15:55:18,915 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 5 letters. Loop has 18 letters. [2019-12-07 15:55:18,915 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:18,915 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 23 letters. Loop has 18 letters. [2019-12-07 15:55:18,915 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:18,915 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 5 letters. Loop has 36 letters. [2019-12-07 15:55:18,915 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:55:18,916 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 511 states and 724 transitions. [2019-12-07 15:55:18,919 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 15:55:18,919 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 511 states to 0 states and 0 transitions. [2019-12-07 15:55:18,919 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 15:55:18,919 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 15:55:18,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 15:55:18,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 15:55:18,920 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:55:18,920 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:55:18,920 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:55:18,920 INFO L424 BuchiCegarLoop]: ======== Iteration 13============ [2019-12-07 15:55:18,920 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 15:55:18,920 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 15:55:18,920 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 15:55:18,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 03:55:18 BoogieIcfgContainer [2019-12-07 15:55:18,926 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 15:55:18,926 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:55:18,927 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:55:18,927 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:55:18,927 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:55:14" (3/4) ... [2019-12-07 15:55:18,930 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 15:55:18,930 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:55:18,932 INFO L168 Benchmark]: Toolchain (without parser) took 5064.57 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 222.8 MB). Free memory was 943.5 MB in the beginning and 1.2 GB in the end (delta: -235.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:55:18,932 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:55:18,932 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -153.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:55:18,933 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.24 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:55:18,933 INFO L168 Benchmark]: Boogie Preprocessor took 11.69 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:55:18,933 INFO L168 Benchmark]: RCFGBuilder took 121.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:55:18,934 INFO L168 Benchmark]: BuchiAutomizer took 4732.66 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 123.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -103.1 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-12-07 15:55:18,934 INFO L168 Benchmark]: Witness Printer took 3.66 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:55:18,935 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 170.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -153.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.24 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.69 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 121.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4732.66 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 123.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -103.1 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.66 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 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 15 terminating modules (4 trivial, 4 deterministic, 7 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function c and consists of 3 locations. One deterministic module has affine ranking function -2 * x + 211 and consists of 3 locations. One deterministic module has affine ranking function c and consists of 5 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function -2 * x + 211 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * x + 201 and consists of 5 locations. One nondeterministic module has affine ranking function x and consists of 5 locations. One nondeterministic module has affine ranking function x and consists of 7 locations. One nondeterministic module has affine ranking function x and consists of 9 locations. One nondeterministic module has affine ranking function c and consists of 6 locations. 4 modules have a trivial ranking function, the largest among these consists of 15 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.7s and 13 iterations. TraceHistogramMax:9. Analysis of lassos took 2.5s. Construction of modules took 0.2s. Büchi inclusion checks took 1.7s. Highest rank in rank-based complementation 7. Minimization of det autom 1. Minimization of nondet autom 14. Automata minimization 0.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 393 StatesRemovedByMinimization, 12 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 260 states and ocurred in iteration 11. Nontrivial modules had stage [4, 0, 3, 1, 3]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 105/148 HoareTripleCheckerStatistics: 154 SDtfs, 161 SDslu, 64 SDs, 0 SdLazy, 353 SolverSat, 101 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT8 conc0 concLT1 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax160 hnf98 lsp36 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf94 smp96 dnf100 smp100 tf112 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 11 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...