./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.13.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_f601a425-cc10-42bc-af1c-b15ff780ceeb/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f601a425-cc10-42bc-af1c-b15ff780ceeb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f601a425-cc10-42bc-af1c-b15ff780ceeb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f601a425-cc10-42bc-af1c-b15ff780ceeb/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.13.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f601a425-cc10-42bc-af1c-b15ff780ceeb/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f601a425-cc10-42bc-af1c-b15ff780ceeb/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 79bd658ed9c5ba1aa412e80cf651fd0f09a08950 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:44:25,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:44:25,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:44:25,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:44:25,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:44:25,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:44:25,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:44:25,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:44:25,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:44:25,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:44:25,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:44:25,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:44:25,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:44:25,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:44:25,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:44:25,989 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:44:25,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:44:25,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:44:25,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:44:25,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:44:25,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:44:25,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:44:25,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:44:25,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:44:25,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:44:25,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:44:25,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:44:25,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:44:25,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:44:26,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:44:26,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:44:26,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:44:26,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:44:26,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:44:26,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:44:26,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:44:26,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:44:26,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:44:26,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:44:26,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:44:26,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:44:26,004 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f601a425-cc10-42bc-af1c-b15ff780ceeb/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 18:44:26,015 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:44:26,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:44:26,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:44:26,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:44:26,016 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:44:26,016 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 18:44:26,016 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 18:44:26,017 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 18:44:26,017 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 18:44:26,017 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 18:44:26,017 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 18:44:26,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:44:26,017 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 18:44:26,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:44:26,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:44:26,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 18:44:26,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 18:44:26,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 18:44:26,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:44:26,018 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 18:44:26,018 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:44:26,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 18:44:26,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:44:26,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:44:26,018 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 18:44:26,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:44:26,019 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:44:26,019 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:44:26,019 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 18:44:26,019 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 18:44:26,020 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_f601a425-cc10-42bc-af1c-b15ff780ceeb/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 -> 79bd658ed9c5ba1aa412e80cf651fd0f09a08950 [2019-12-07 18:44:26,120 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:44:26,130 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:44:26,133 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:44:26,134 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:44:26,135 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:44:26,135 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f601a425-cc10-42bc-af1c-b15ff780ceeb/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.13.c [2019-12-07 18:44:26,173 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f601a425-cc10-42bc-af1c-b15ff780ceeb/bin/uautomizer/data/6457f9555/39f486422c0e4c58899517f143d3429e/FLAGddc57e2c8 [2019-12-07 18:44:26,586 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:44:26,587 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f601a425-cc10-42bc-af1c-b15ff780ceeb/sv-benchmarks/c/termination-restricted-15/b.13.c [2019-12-07 18:44:26,590 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f601a425-cc10-42bc-af1c-b15ff780ceeb/bin/uautomizer/data/6457f9555/39f486422c0e4c58899517f143d3429e/FLAGddc57e2c8 [2019-12-07 18:44:26,599 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f601a425-cc10-42bc-af1c-b15ff780ceeb/bin/uautomizer/data/6457f9555/39f486422c0e4c58899517f143d3429e [2019-12-07 18:44:26,601 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:44:26,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:44:26,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:44:26,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:44:26,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:44:26,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:44:26" (1/1) ... [2019-12-07 18:44:26,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78d2714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:26, skipping insertion in model container [2019-12-07 18:44:26,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:44:26" (1/1) ... [2019-12-07 18:44:26,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:44:26,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:44:26,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:44:26,719 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:44:26,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:44:26,770 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:44:26,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:26 WrapperNode [2019-12-07 18:44:26,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:44:26,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:44:26,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:44:26,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:44:26,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:26" (1/1) ... [2019-12-07 18:44:26,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:26" (1/1) ... [2019-12-07 18:44:26,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:44:26,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:44:26,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:44:26,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:44:26,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:26" (1/1) ... [2019-12-07 18:44:26,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:26" (1/1) ... [2019-12-07 18:44:26,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:26" (1/1) ... [2019-12-07 18:44:26,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:26" (1/1) ... [2019-12-07 18:44:26,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:26" (1/1) ... [2019-12-07 18:44:26,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:26" (1/1) ... [2019-12-07 18:44:26,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:26" (1/1) ... [2019-12-07 18:44:26,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:44:26,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:44:26,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:44:26,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:44:26,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f601a425-cc10-42bc-af1c-b15ff780ceeb/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 18:44:26,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:44:26,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:44:26,941 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:44:26,941 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 18:44:26,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:44:26 BoogieIcfgContainer [2019-12-07 18:44:26,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:44:26,942 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 18:44:26,942 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 18:44:26,944 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 18:44:26,945 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:44:26,945 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 06:44:26" (1/3) ... [2019-12-07 18:44:26,946 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@66d1d788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:44:26, skipping insertion in model container [2019-12-07 18:44:26,946 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:44:26,946 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:44:26" (2/3) ... [2019-12-07 18:44:26,946 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@66d1d788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:44:26, skipping insertion in model container [2019-12-07 18:44:26,946 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:44:26,946 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:44:26" (3/3) ... [2019-12-07 18:44:26,947 INFO L371 chiAutomizerObserver]: Analyzing ICFG b.13.c [2019-12-07 18:44:26,977 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 18:44:26,977 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 18:44:26,977 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 18:44:26,977 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:44:26,978 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:44:26,978 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 18:44:26,978 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:44:26,978 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 18:44:26,987 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 18:44:27,000 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 18:44:27,000 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:44:27,000 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:44:27,005 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 18:44:27,005 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 18:44:27,005 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 18:44:27,005 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 18:44:27,006 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 18:44:27,006 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:44:27,006 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:44:27,006 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 18:44:27,006 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 18:44:27,011 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 10#L16-2true [2019-12-07 18:44:27,011 INFO L796 eck$LassoCheckResult]: Loop: 10#L16-2true assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 8#L13true assume main_~x~0 > main_~z~0;main_~x~0 := main_~x~0 - 1; 10#L16-2true [2019-12-07 18:44:27,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:44:27,015 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-12-07 18:44:27,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:44:27,021 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624939428] [2019-12-07 18:44:27,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:44:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:27,087 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:44:27,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:44:27,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-12-07 18:44:27,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:44:27,088 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437235930] [2019-12-07 18:44:27,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:44:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:27,099 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:44:27,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:44:27,100 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-12-07 18:44:27,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:44:27,100 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361791648] [2019-12-07 18:44:27,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:44:27,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:27,112 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:44:27,152 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:44:27,153 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:44:27,153 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:44:27,153 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:44:27,153 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:44:27,153 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:27,153 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:44:27,153 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:44:27,154 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.13.c_Iteration1_Loop [2019-12-07 18:44:27,154 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:44:27,154 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:44:27,168 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 18:44:27,175 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 18:44:27,178 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 18:44:27,221 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:44:27,222 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f601a425-cc10-42bc-af1c-b15ff780ceeb/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 18:44:27,226 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:44:27,226 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:44:27,233 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:44:27,233 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_f601a425-cc10-42bc-af1c-b15ff780ceeb/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 18:44:27,237 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:44:27,237 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:44:27,241 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:44:27,241 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_f601a425-cc10-42bc-af1c-b15ff780ceeb/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 18:44:27,244 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:44:27,244 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f601a425-cc10-42bc-af1c-b15ff780ceeb/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 18:44:27,251 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:44:27,251 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:44:27,411 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:44:27,412 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:44:27,412 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:44:27,412 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:44:27,413 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:44:27,413 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:44:27,413 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:27,413 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:44:27,413 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:44:27,413 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.13.c_Iteration1_Loop [2019-12-07 18:44:27,413 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:44:27,413 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:44:27,414 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 18:44:27,418 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 18:44:27,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:44:27,448 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:44:27,452 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f601a425-cc10-42bc-af1c-b15ff780ceeb/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 18:44:27,456 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 18:44:27,457 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:44:27,458 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:44:27,458 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:44:27,458 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:44:27,462 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:44:27,462 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:44:27,466 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f601a425-cc10-42bc-af1c-b15ff780ceeb/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 18:44:27,469 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 18:44:27,471 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:44:27,471 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:44:27,471 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:44:27,471 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:44:27,473 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:44:27,473 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:44:27,477 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f601a425-cc10-42bc-af1c-b15ff780ceeb/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 18:44:27,483 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 18:44:27,484 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:44:27,485 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:44:27,485 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:44:27,485 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:44:27,485 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:44:27,486 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:44:27,487 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:44:27,489 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:44:27,493 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-12-07 18:44:27,494 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f601a425-cc10-42bc-af1c-b15ff780ceeb/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 18:44:27,500 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:44:27,500 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:44:27,501 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:44:27,501 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2019-12-07 18:44:27,504 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:44:27,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:44:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:44:27,536 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:44:27,537 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:44:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:44:27,544 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:44:27,544 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:44:27,547 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 18:44:27,557 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 18:44:27,558 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-12-07 18:44:27,590 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 34 transitions. Complement of second has 5 states. [2019-12-07 18:44:27,591 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 18:44:27,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 18:44:27,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-12-07 18:44:27,593 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 2 letters. [2019-12-07 18:44:27,594 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:44:27,594 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 2 letters. [2019-12-07 18:44:27,594 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:44:27,594 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 4 letters. [2019-12-07 18:44:27,594 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:44:27,595 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 34 transitions. [2019-12-07 18:44:27,596 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 18:44:27,599 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 10 states and 15 transitions. [2019-12-07 18:44:27,599 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-12-07 18:44:27,600 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-12-07 18:44:27,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2019-12-07 18:44:27,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:44:27,600 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2019-12-07 18:44:27,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2019-12-07 18:44:27,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-12-07 18:44:27,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 18:44:27,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2019-12-07 18:44:27,617 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-12-07 18:44:27,617 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-12-07 18:44:27,617 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 18:44:27,617 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2019-12-07 18:44:27,618 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 18:44:27,618 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:44:27,618 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:44:27,618 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 18:44:27,618 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 18:44:27,618 INFO L794 eck$LassoCheckResult]: Stem: 63#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 64#L16-2 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 69#L13 [2019-12-07 18:44:27,618 INFO L796 eck$LassoCheckResult]: Loop: 69#L13 assume !(main_~x~0 > main_~z~0); 65#L16 assume main_~y~0 > main_~z~0;main_~y~0 := main_~y~0 - 1; 66#L16-2 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 69#L13 [2019-12-07 18:44:27,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:44:27,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-12-07 18:44:27,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:44:27,619 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165544782] [2019-12-07 18:44:27,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:44:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:27,626 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:44:27,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:44:27,626 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2019-12-07 18:44:27,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:44:27,626 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042362733] [2019-12-07 18:44:27,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:44:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:27,633 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:44:27,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:44:27,633 INFO L82 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2019-12-07 18:44:27,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:44:27,633 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734869606] [2019-12-07 18:44:27,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:44:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:27,641 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:44:27,660 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:44:27,660 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:44:27,660 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:44:27,660 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:44:27,660 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:44:27,660 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:27,660 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:44:27,660 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:44:27,660 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.13.c_Iteration2_Loop [2019-12-07 18:44:27,660 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:44:27,660 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:44:27,661 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 18:44:27,664 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 18:44:27,666 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 18:44:27,700 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:44:27,700 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f601a425-cc10-42bc-af1c-b15ff780ceeb/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 18:44:27,704 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:44:27,704 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:44:27,708 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:44:27,708 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_f601a425-cc10-42bc-af1c-b15ff780ceeb/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 18:44:27,712 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:44:27,712 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:44:27,715 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:44:27,715 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f601a425-cc10-42bc-af1c-b15ff780ceeb/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 18:44:27,719 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:44:27,719 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f601a425-cc10-42bc-af1c-b15ff780ceeb/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 18:44:27,725 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:44:27,725 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:44:28,110 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:44:28,112 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:44:28,112 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:44:28,112 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:44:28,112 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:44:28,112 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:44:28,112 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:44:28,112 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:44:28,112 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:44:28,112 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.13.c_Iteration2_Loop [2019-12-07 18:44:28,112 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:44:28,112 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:44:28,113 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 18:44:28,115 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 18:44:28,121 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 18:44:28,146 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:44:28,147 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f601a425-cc10-42bc-af1c-b15ff780ceeb/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 18:44:28,150 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 18:44:28,151 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:44:28,151 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:44:28,151 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:44:28,151 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:44:28,153 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:44:28,153 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:44:28,156 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f601a425-cc10-42bc-af1c-b15ff780ceeb/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 18:44:28,160 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 18:44:28,161 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:44:28,161 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:44:28,161 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:44:28,161 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:44:28,161 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:44:28,162 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:44:28,162 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:44:28,164 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:44:28,168 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 18:44:28,168 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f601a425-cc10-42bc-af1c-b15ff780ceeb/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 18:44:28,171 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:44:28,171 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:44:28,171 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:44:28,171 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~y~0 - 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2019-12-07 18:44:28,172 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:44:28,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:44:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:44:28,195 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:44:28,196 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:44:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:44:28,199 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 18:44:28,199 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:44:28,227 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 18:44:28,227 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 18:44:28,228 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-12-07 18:44:28,249 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 35 states and 53 transitions. Complement of second has 7 states. [2019-12-07 18:44:28,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 18:44:28,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 18:44:28,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2019-12-07 18:44:28,251 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 3 letters. [2019-12-07 18:44:28,251 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:44:28,251 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2019-12-07 18:44:28,251 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:44:28,251 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 6 letters. [2019-12-07 18:44:28,252 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:44:28,252 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 53 transitions. [2019-12-07 18:44:28,254 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 18:44:28,255 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 24 states and 35 transitions. [2019-12-07 18:44:28,255 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-12-07 18:44:28,255 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-12-07 18:44:28,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 35 transitions. [2019-12-07 18:44:28,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:44:28,256 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2019-12-07 18:44:28,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 35 transitions. [2019-12-07 18:44:28,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2019-12-07 18:44:28,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 18:44:28,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 31 transitions. [2019-12-07 18:44:28,259 INFO L711 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2019-12-07 18:44:28,259 INFO L591 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2019-12-07 18:44:28,259 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 18:44:28,259 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 31 transitions. [2019-12-07 18:44:28,260 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 18:44:28,260 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:44:28,260 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:44:28,260 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 18:44:28,261 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 18:44:28,261 INFO L794 eck$LassoCheckResult]: Stem: 147#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 148#L16-2 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 163#L13 assume !(main_~x~0 > main_~z~0); 149#L16 [2019-12-07 18:44:28,261 INFO L796 eck$LassoCheckResult]: Loop: 149#L16 assume !(main_~y~0 > main_~z~0); 150#L16-2 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 157#L13 assume !(main_~x~0 > main_~z~0); 149#L16 [2019-12-07 18:44:28,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:44:28,261 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-12-07 18:44:28,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:44:28,262 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163719213] [2019-12-07 18:44:28,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:44:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:44:28,271 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:44:28,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:44:28,271 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2019-12-07 18:44:28,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:44:28,271 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921434916] [2019-12-07 18:44:28,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:44:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:44:28,296 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 18:44:28,297 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921434916] [2019-12-07 18:44:28,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:44:28,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 18:44:28,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954771179] [2019-12-07 18:44:28,300 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 18:44:28,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:44:28,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:44:28,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:44:28,303 INFO L87 Difference]: Start difference. First operand 20 states and 31 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-12-07 18:44:28,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:44:28,322 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2019-12-07 18:44:28,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:44:28,322 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 30 transitions. [2019-12-07 18:44:28,323 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:44:28,323 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2019-12-07 18:44:28,323 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 18:44:28,324 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 18:44:28,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 18:44:28,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:44:28,324 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:44:28,324 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:44:28,324 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:44:28,324 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 18:44:28,324 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 18:44:28,324 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:44:28,324 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 18:44:28,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 06:44:28 BoogieIcfgContainer [2019-12-07 18:44:28,329 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 18:44:28,329 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:44:28,329 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:44:28,329 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:44:28,330 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:44:26" (3/4) ... [2019-12-07 18:44:28,332 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 18:44:28,332 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:44:28,333 INFO L168 Benchmark]: Toolchain (without parser) took 1731.21 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 939.3 MB in the beginning and 908.3 MB in the end (delta: 31.0 MB). Peak memory consumption was 131.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:44:28,334 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:44:28,334 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.17 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -158.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:44:28,335 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.78 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 18:44:28,335 INFO L168 Benchmark]: Boogie Preprocessor took 12.58 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 18:44:28,335 INFO L168 Benchmark]: RCFGBuilder took 137.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:44:28,336 INFO L168 Benchmark]: BuchiAutomizer took 1386.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 908.3 MB in the end (delta: 170.1 MB). Peak memory consumption was 170.1 MB. Max. memory is 11.5 GB. [2019-12-07 18:44:28,336 INFO L168 Benchmark]: Witness Printer took 3.08 ms. Allocated memory is still 1.1 GB. Free memory is still 908.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:44:28,338 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 168.17 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -158.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.78 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 12.58 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 137.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1386.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 908.3 MB in the end (delta: 170.1 MB). Peak memory consumption was 170.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.08 ms. Allocated memory is still 1.1 GB. Free memory is still 908.3 MB. 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x + -1 * z and consists of 4 locations. One deterministic module has affine ranking function y + -1 * z and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.3s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 20 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 12 SDtfs, 16 SDslu, 3 SDs, 0 SdLazy, 44 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf98 lsp48 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf94 smp100 dnf100 smp100 tf112 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...