./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-numeric/rec_counter3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/rec_counter3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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 639f18bc5de28da6eb107c1e55f1eb45909efdef ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:04:00,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:04:00,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:04:00,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:04:00,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:04:00,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:04:00,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:04:00,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:04:00,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:04:00,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:04:00,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:04:00,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:04:00,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:04:00,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:04:00,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:04:00,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:04:00,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:04:00,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:04:00,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:04:00,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:04:00,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:04:00,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:04:00,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:04:00,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:04:00,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:04:00,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:04:00,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:04:00,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:04:00,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:04:00,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:04:00,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:04:00,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:04:00,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:04:00,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:04:00,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:04:00,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:04:00,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:04:00,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:04:00,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:04:00,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:04:00,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:04:00,520 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 03:04:00,561 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:04:00,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:04:00,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:04:00,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:04:00,563 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:04:00,563 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:04:00,563 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:04:00,563 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:04:00,564 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:04:00,564 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:04:00,564 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:04:00,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:04:00,564 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:04:00,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:04:00,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:04:00,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:04:00,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:04:00,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:04:00,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:04:00,566 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:04:00,566 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:04:00,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:04:00,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:04:00,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:04:00,567 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:04:00,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:04:00,568 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:04:00,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:04:00,568 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:04:00,569 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:04:00,569 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 639f18bc5de28da6eb107c1e55f1eb45909efdef [2020-11-28 03:04:00,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:04:00,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:04:00,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:04:00,857 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:04:00,858 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:04:00,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/bin/uautomizer/../../sv-benchmarks/c/termination-numeric/rec_counter3.c [2020-11-28 03:04:00,942 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/bin/uautomizer/data/f699fe501/57916ae18c574cc68255d4fad7659275/FLAG979fed5fe [2020-11-28 03:04:01,403 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:04:01,403 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/sv-benchmarks/c/termination-numeric/rec_counter3.c [2020-11-28 03:04:01,411 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/bin/uautomizer/data/f699fe501/57916ae18c574cc68255d4fad7659275/FLAG979fed5fe [2020-11-28 03:04:01,779 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/bin/uautomizer/data/f699fe501/57916ae18c574cc68255d4fad7659275 [2020-11-28 03:04:01,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:04:01,783 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:04:01,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:04:01,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:04:01,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:04:01,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:04:01" (1/1) ... [2020-11-28 03:04:01,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59bbc535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:01, skipping insertion in model container [2020-11-28 03:04:01,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:04:01" (1/1) ... [2020-11-28 03:04:01,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:04:01,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:04:02,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:04:02,007 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:04:02,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:04:02,066 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:04:02,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:02 WrapperNode [2020-11-28 03:04:02,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:04:02,069 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:04:02,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:04:02,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:04:02,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:02" (1/1) ... [2020-11-28 03:04:02,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:02" (1/1) ... [2020-11-28 03:04:02,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:04:02,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:04:02,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:04:02,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:04:02,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:02" (1/1) ... [2020-11-28 03:04:02,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:02" (1/1) ... [2020-11-28 03:04:02,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:02" (1/1) ... [2020-11-28 03:04:02,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:02" (1/1) ... [2020-11-28 03:04:02,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:02" (1/1) ... [2020-11-28 03:04:02,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:02" (1/1) ... [2020-11-28 03:04:02,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:02" (1/1) ... [2020-11-28 03:04:02,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:04:02,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:04:02,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:04:02,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:04:02,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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 [2020-11-28 03:04:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2020-11-28 03:04:02,183 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2020-11-28 03:04:02,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:04:02,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:04:02,407 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:04:02,407 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 03:04:02,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:02 BoogieIcfgContainer [2020-11-28 03:04:02,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:04:02,419 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:04:02,419 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:04:02,422 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:04:02,429 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:04:02,429 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:04:01" (1/3) ... [2020-11-28 03:04:02,430 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@64d06213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:04:02, skipping insertion in model container [2020-11-28 03:04:02,431 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:04:02,431 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:02" (2/3) ... [2020-11-28 03:04:02,431 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@64d06213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:04:02, skipping insertion in model container [2020-11-28 03:04:02,447 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:04:02,447 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:02" (3/3) ... [2020-11-28 03:04:02,449 INFO L373 chiAutomizerObserver]: Analyzing ICFG rec_counter3.c [2020-11-28 03:04:02,492 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:04:02,492 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:04:02,492 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:04:02,492 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:04:02,493 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:04:02,493 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:04:02,493 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:04:02,493 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:04:02,505 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-11-28 03:04:02,536 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 5 [2020-11-28 03:04:02,536 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:04:02,536 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:04:02,543 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-28 03:04:02,543 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:04:02,544 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:04:02,544 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-11-28 03:04:02,550 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 5 [2020-11-28 03:04:02,550 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:04:02,550 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:04:02,550 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-28 03:04:02,550 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:04:02,557 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 5#L18true assume !(main_~i~0 <= 0); 9#L20true call main_#t~ret3 := rec(main_~i~0);< 3#recENTRYtrue [2020-11-28 03:04:02,558 INFO L796 eck$LassoCheckResult]: Loop: 3#recENTRYtrue ~a := #in~a; 8#L5true assume !(0 == ~a); 11#L8true call #t~ret0 := rec(~a - 1);< 3#recENTRYtrue [2020-11-28 03:04:02,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:02,562 INFO L82 PathProgramCache]: Analyzing trace with hash 51816, now seen corresponding path program 1 times [2020-11-28 03:04:02,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:02,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858988834] [2020-11-28 03:04:02,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:02,639 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:02,644 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:02,658 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:02,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:02,660 INFO L82 PathProgramCache]: Analyzing trace with hash 29959, now seen corresponding path program 1 times [2020-11-28 03:04:02,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:02,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251072670] [2020-11-28 03:04:02,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:02,682 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:02,692 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:02,695 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:02,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:02,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1543650624, now seen corresponding path program 1 times [2020-11-28 03:04:02,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:02,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843117944] [2020-11-28 03:04:02,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:02,717 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:02,722 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:02,724 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:02,838 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:02,840 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:02,840 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:02,840 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:02,841 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:04:02,841 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:02,841 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:02,841 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:02,841 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration1_Loop [2020-11-28 03:04:02,841 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:02,842 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:02,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:02,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:02,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:02,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:02,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:02,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:02,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:02,996 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:02,997 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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) [2020-11-28 03:04:03,084 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:03,084 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:03,092 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:03,093 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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) [2020-11-28 03:04:03,133 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:03,133 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:03,137 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:03,137 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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) [2020-11-28 03:04:03,177 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:03,177 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:03,183 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:03,183 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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) [2020-11-28 03:04:03,223 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:03,223 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:03,228 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:03,228 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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) [2020-11-28 03:04:03,269 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:03,269 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:03,273 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:03,273 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=0} Honda state: {rec_~a=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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) [2020-11-28 03:04:03,315 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:03,315 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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) [2020-11-28 03:04:03,360 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:04:03,360 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:03,406 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:03,406 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#in~a=-6} Honda state: {rec_#in~a=-6} Generalized eigenvectors: [{rec_#in~a=0}, {rec_#in~a=0}, {rec_#in~a=-1}] Lambdas: [0, 10, 1] Nus: [1, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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 [2020-11-28 03:04:03,428 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:03,429 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:03,432 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:03,433 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-11-28 03:04:03,531 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:03,531 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:03,531 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:03,531 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:03,531 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:04:03,531 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:03,532 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:03,532 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:03,532 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration1_Lasso [2020-11-28 03:04:03,532 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:03,532 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:03,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:03,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:03,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:03,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:03,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:03,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:03,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:03,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:03,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:03,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:03,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:03,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:03,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:03,734 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:03,734 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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) [2020-11-28 03:04:03,748 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:03,748 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:03,753 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:03,753 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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) [2020-11-28 03:04:03,798 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:03,798 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:03,801 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:03,802 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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) [2020-11-28 03:04:03,830 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:03,830 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:03,832 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:03,832 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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 [2020-11-28 03:04:03,854 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:03,854 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:03,856 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:03,856 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret3=0} Honda state: {ULTIMATE.start_main_#t~ret3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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 [2020-11-28 03:04:03,891 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:03,891 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:03,896 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:03,896 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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 [2020-11-28 03:04:03,934 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:03,934 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:03,937 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:03,937 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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 [2020-11-28 03:04:03,975 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:03,975 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:03,977 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:03,978 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=0} Honda state: {rec_~a=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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 [2020-11-28 03:04:04,000 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:04,000 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:04,008 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:04,008 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=0} Honda state: {ULTIMATE.start_main_~i~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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 [2020-11-28 03:04:04,032 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:04,032 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:04,034 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:04,034 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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 [2020-11-28 03:04:04,056 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:04,056 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:04,058 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:04,058 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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 [2020-11-28 03:04:04,080 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:04,080 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:04,083 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:04,083 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_#t~ret4=0} Honda state: {ULTIMATE.start_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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 [2020-11-28 03:04:04,115 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:04,115 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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 [2020-11-28 03:04:04,142 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:04:04,142 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:04,259 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:04:04,260 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:04,260 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:04,260 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:04,260 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:04,260 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:04:04,261 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:04,261 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:04,261 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:04,261 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration1_Lasso [2020-11-28 03:04:04,261 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:04,261 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:04,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:04,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:04,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:04,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:04,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:04,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:04,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:04,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:04,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:04,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:04,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:04,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:04,323 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:04,449 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:04,459 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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 [2020-11-28 03:04:04,465 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:04:04,467 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:04,467 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:04,468 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:04,468 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:04,468 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:04,470 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:04,470 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:04:04,472 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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 [2020-11-28 03:04:04,495 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:04:04,496 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:04,496 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:04,496 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:04,496 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:04,496 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:04,499 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:04,499 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:04:04,519 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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) [2020-11-28 03:04:04,556 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:04:04,558 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:04,558 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:04,558 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:04,558 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:04,558 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:04,559 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:04,559 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:04,561 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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) [2020-11-28 03:04:04,598 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:04:04,599 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:04,599 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:04,600 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:04,600 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:04,600 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:04,601 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:04,601 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:04,605 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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 [2020-11-28 03:04:04,630 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:04:04,632 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:04,632 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:04,632 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:04,632 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:04,632 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:04,634 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:04,634 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:04:04,639 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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 [2020-11-28 03:04:04,664 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:04:04,666 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:04,666 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:04,666 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:04,666 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:04,666 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:04,667 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:04,667 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:04:04,668 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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 [2020-11-28 03:04:04,690 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:04:04,691 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:04,691 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:04,692 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:04,692 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:04,692 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:04,692 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:04,692 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:04:04,694 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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 [2020-11-28 03:04:04,715 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:04:04,716 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:04,716 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:04,716 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:04,716 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:04,716 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:04,717 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:04,717 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:04:04,719 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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 [2020-11-28 03:04:04,741 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:04:04,742 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:04,742 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:04,743 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:04,743 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:04,743 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:04,743 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:04,744 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:04:04,745 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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 [2020-11-28 03:04:04,768 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:04:04,769 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:04,769 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:04,769 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:04,769 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:04,769 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:04,770 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:04,770 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:04:04,774 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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 [2020-11-28 03:04:04,796 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:04:04,797 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:04,797 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:04,797 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:04,797 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:04,797 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:04,800 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:04,800 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:04:04,802 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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 [2020-11-28 03:04:04,823 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:04:04,825 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:04,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:04,825 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-28 03:04:04,826 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:04,837 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2020-11-28 03:04:04,837 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2020-11-28 03:04:04,858 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:04:04,938 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2020-11-28 03:04:04,938 INFO L444 ModelExtractionUtils]: 2 out of 11 variables were initially zero. Simplification set additionally 6 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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) [2020-11-28 03:04:04,944 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:04,949 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2020-11-28 03:04:04,949 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:04:04,950 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_#in~a) = 1*rec_#in~a Supporting invariants [1*rec_#in~a >= 0] [2020-11-28 03:04:04,989 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-11-28 03:04:05,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:05,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:04:05,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:05,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:04:05,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:05,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:05,299 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2020-11-28 03:04:05,300 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states. Second operand 5 states. [2020-11-28 03:04:05,521 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states.. Second operand 5 states. Result 34 states and 42 transitions. Complement of second has 13 states. [2020-11-28 03:04:05,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 03:04:05,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-28 03:04:05,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2020-11-28 03:04:05,525 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2020-11-28 03:04:05,526 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:05,526 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-28 03:04:05,527 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:05,527 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2020-11-28 03:04:05,527 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:05,528 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 42 transitions. [2020-11-28 03:04:05,531 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-11-28 03:04:05,536 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 22 states and 29 transitions. [2020-11-28 03:04:05,536 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-11-28 03:04:05,537 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-11-28 03:04:05,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 29 transitions. [2020-11-28 03:04:05,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:04:05,537 INFO L691 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2020-11-28 03:04:05,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 29 transitions. [2020-11-28 03:04:05,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-11-28 03:04:05,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 03:04:05,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2020-11-28 03:04:05,570 INFO L714 BuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2020-11-28 03:04:05,570 INFO L594 BuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2020-11-28 03:04:05,570 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:04:05,570 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 25 transitions. [2020-11-28 03:04:05,575 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-11-28 03:04:05,575 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:04:05,575 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:04:05,576 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:05,576 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 03:04:05,576 INFO L794 eck$LassoCheckResult]: Stem: 128#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 122#L18 assume !(main_~i~0 <= 0); 116#L20 call main_#t~ret3 := rec(main_~i~0);< 115#recENTRY ~a := #in~a; 118#L5 assume 0 == ~a;#res := 0; 125#recFINAL assume true; 132#recEXIT >#47#return; 123#L20-1 main_~res~1 := main_#t~ret3;havoc main_#t~ret3; 124#L21-2 [2020-11-28 03:04:05,576 INFO L796 eck$LassoCheckResult]: Loop: 124#L21-2 assume !!(main_~res~1 < 1); 124#L21-2 [2020-11-28 03:04:05,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:05,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1684481175, now seen corresponding path program 1 times [2020-11-28 03:04:05,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:05,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014839179] [2020-11-28 03:04:05,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:05,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:04:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:05,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:05,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014839179] [2020-11-28 03:04:05,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:04:05,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:04:05,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537642864] [2020-11-28 03:04:05,697 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 03:04:05,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:05,697 INFO L82 PathProgramCache]: Analyzing trace with hash 69, now seen corresponding path program 1 times [2020-11-28 03:04:05,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:05,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743958914] [2020-11-28 03:04:05,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:05,707 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:05,709 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:05,711 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:05,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:04:05,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:04:05,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:04:05,722 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. cyclomatic complexity: 8 Second operand 5 states. [2020-11-28 03:04:05,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:05,770 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-11-28 03:04:05,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:04:05,771 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2020-11-28 03:04:05,772 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-11-28 03:04:05,773 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 17 states and 20 transitions. [2020-11-28 03:04:05,773 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-11-28 03:04:05,773 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-11-28 03:04:05,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 20 transitions. [2020-11-28 03:04:05,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:04:05,774 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2020-11-28 03:04:05,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 20 transitions. [2020-11-28 03:04:05,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-28 03:04:05,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 03:04:05,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2020-11-28 03:04:05,776 INFO L714 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2020-11-28 03:04:05,776 INFO L594 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2020-11-28 03:04:05,776 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 03:04:05,777 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 20 transitions. [2020-11-28 03:04:05,777 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-11-28 03:04:05,777 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:04:05,777 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:04:05,778 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:05,778 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 03:04:05,778 INFO L794 eck$LassoCheckResult]: Stem: 181#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 175#L18 assume !(main_~i~0 <= 0); 170#L20 call main_#t~ret3 := rec(main_~i~0);< 169#recENTRY ~a := #in~a; 171#L5 assume !(0 == ~a); 173#L8 call #t~ret0 := rec(~a - 1);< 172#recENTRY ~a := #in~a; 174#L5 assume 0 == ~a;#res := 0; 178#recFINAL assume true; 184#recEXIT >#45#return; 182#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 179#L10-2 [2020-11-28 03:04:05,779 INFO L796 eck$LassoCheckResult]: Loop: 179#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 179#L10-2 [2020-11-28 03:04:05,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:05,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1511241834, now seen corresponding path program 1 times [2020-11-28 03:04:05,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:05,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198038701] [2020-11-28 03:04:05,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:05,792 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:05,798 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:05,800 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:05,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:05,801 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2020-11-28 03:04:05,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:05,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841010870] [2020-11-28 03:04:05,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:05,804 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:05,806 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:05,807 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:05,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:05,808 INFO L82 PathProgramCache]: Analyzing trace with hash -396143387, now seen corresponding path program 1 times [2020-11-28 03:04:05,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:05,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622087627] [2020-11-28 03:04:05,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:05,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-28 03:04:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:05,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:04:05,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622087627] [2020-11-28 03:04:05,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:04:05,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:04:05,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049914781] [2020-11-28 03:04:05,874 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:05,874 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:05,874 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:05,874 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:05,874 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:04:05,874 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:05,874 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:05,874 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:05,874 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration3_Loop [2020-11-28 03:04:05,875 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:05,875 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:05,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:05,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:05,908 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:05,908 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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) [2020-11-28 03:04:05,911 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:05,911 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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) [2020-11-28 03:04:05,950 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:04:05,950 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:05,989 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:04:05,990 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:05,990 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:05,991 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:05,991 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:05,991 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:04:05,991 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:05,991 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:05,991 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:05,991 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration3_Loop [2020-11-28 03:04:05,991 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:05,991 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:05,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:05,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:06,030 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:06,031 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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 [2020-11-28 03:04:06,036 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:04:06,037 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:06,038 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:06,038 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:06,038 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:06,038 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:06,038 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:06,038 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:04:06,040 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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) [2020-11-28 03:04:06,063 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:06,065 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:06,065 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:06,065 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:06,065 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:06,065 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:06,066 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:06,066 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:04:06,068 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:04:06,072 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:04:06,072 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_ef9c09b5-de48-423b-98cb-b5276c4f8897/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 [2020-11-28 03:04:06,074 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:04:06,074 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:04:06,074 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:04:06,074 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2020-11-28 03:04:06,093 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:04:06,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:06,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:04:06,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:06,213 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:04:06,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:06,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:06,214 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2020-11-28 03:04:06,214 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-11-28 03:04:06,280 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 37 states and 49 transitions. Complement of second has 10 states. [2020-11-28 03:04:06,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:04:06,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:04:06,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-11-28 03:04:06,284 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 11 letters. Loop has 1 letters. [2020-11-28 03:04:06,284 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:06,284 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 12 letters. Loop has 1 letters. [2020-11-28 03:04:06,285 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:06,285 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 11 letters. Loop has 2 letters. [2020-11-28 03:04:06,285 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:06,285 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 49 transitions. [2020-11-28 03:04:06,287 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-11-28 03:04:06,288 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 31 states and 41 transitions. [2020-11-28 03:04:06,289 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2020-11-28 03:04:06,289 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2020-11-28 03:04:06,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 41 transitions. [2020-11-28 03:04:06,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:04:06,290 INFO L691 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2020-11-28 03:04:06,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 41 transitions. [2020-11-28 03:04:06,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-28 03:04:06,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 03:04:06,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2020-11-28 03:04:06,301 INFO L714 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2020-11-28 03:04:06,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:04:06,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:04:06,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:04:06,303 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand 5 states. [2020-11-28 03:04:06,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:06,326 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2020-11-28 03:04:06,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:04:06,327 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 35 transitions. [2020-11-28 03:04:06,329 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-11-28 03:04:06,330 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 29 states and 35 transitions. [2020-11-28 03:04:06,330 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2020-11-28 03:04:06,330 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2020-11-28 03:04:06,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 35 transitions. [2020-11-28 03:04:06,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:04:06,331 INFO L691 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-11-28 03:04:06,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 35 transitions. [2020-11-28 03:04:06,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-28 03:04:06,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-28 03:04:06,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-11-28 03:04:06,335 INFO L714 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-11-28 03:04:06,335 INFO L594 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-11-28 03:04:06,335 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 03:04:06,335 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 35 transitions. [2020-11-28 03:04:06,341 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-11-28 03:04:06,341 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:04:06,341 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:04:06,342 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:06,342 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 03:04:06,342 INFO L794 eck$LassoCheckResult]: Stem: 366#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 362#L18 assume !(main_~i~0 <= 0); 355#L20 call main_#t~ret3 := rec(main_~i~0);< 354#recENTRY ~a := #in~a; 356#L5 assume !(0 == ~a); 358#L8 call #t~ret0 := rec(~a - 1);< 357#recENTRY ~a := #in~a; 361#L5 assume 0 == ~a;#res := 0; 363#recFINAL assume true; 373#recEXIT >#45#return; 381#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 378#L10-2 assume !(~rescopy~0 > 0); 379#L10-3 #res := 1 + ~res~0; 382#recFINAL assume true; 374#recEXIT >#47#return; 364#L20-1 main_~res~1 := main_#t~ret3;havoc main_#t~ret3; 365#L21-2 [2020-11-28 03:04:06,342 INFO L796 eck$LassoCheckResult]: Loop: 365#L21-2 assume !!(main_~res~1 < 1); 365#L21-2 [2020-11-28 03:04:06,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:06,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1423892654, now seen corresponding path program 1 times [2020-11-28 03:04:06,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:06,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083753936] [2020-11-28 03:04:06,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:06,360 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:06,367 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:06,371 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:06,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:06,371 INFO L82 PathProgramCache]: Analyzing trace with hash 69, now seen corresponding path program 2 times [2020-11-28 03:04:06,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:06,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560757280] [2020-11-28 03:04:06,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:06,374 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:06,375 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:06,375 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:06,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:06,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1190999276, now seen corresponding path program 1 times [2020-11-28 03:04:06,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:06,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071878468] [2020-11-28 03:04:06,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:06,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:04:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:06,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:04:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:06,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:04:06,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071878468] [2020-11-28 03:04:06,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330360929] [2020-11-28 03:04:06,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/bin/uautomizer/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-28 03:04:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:06,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:04:06,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:04:06,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:04:06,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:04:06,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2020-11-28 03:04:06,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654839786] [2020-11-28 03:04:06,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:04:06,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:04:06,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:04:06,662 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. cyclomatic complexity: 9 Second operand 8 states. [2020-11-28 03:04:06,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:06,693 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-11-28 03:04:06,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:04:06,694 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 34 transitions. [2020-11-28 03:04:06,695 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 03:04:06,696 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 22 states and 26 transitions. [2020-11-28 03:04:06,696 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-11-28 03:04:06,696 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-11-28 03:04:06,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 26 transitions. [2020-11-28 03:04:06,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:04:06,697 INFO L691 BuchiCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-11-28 03:04:06,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 26 transitions. [2020-11-28 03:04:06,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2020-11-28 03:04:06,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-28 03:04:06,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-11-28 03:04:06,700 INFO L714 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-11-28 03:04:06,700 INFO L594 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-11-28 03:04:06,700 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-28 03:04:06,700 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 22 transitions. [2020-11-28 03:04:06,701 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 03:04:06,701 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:04:06,701 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:04:06,702 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:06,702 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 03:04:06,702 INFO L794 eck$LassoCheckResult]: Stem: 504#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 505#L18 assume !(main_~i~0 <= 0); 495#L20 call main_#t~ret3 := rec(main_~i~0);< 494#recENTRY ~a := #in~a; 496#L5 assume !(0 == ~a); 498#L8 call #t~ret0 := rec(~a - 1);< 497#recENTRY ~a := #in~a; 500#L5 assume !(0 == ~a); 499#L8 call #t~ret0 := rec(~a - 1);< 497#recENTRY ~a := #in~a; 501#L5 assume 0 == ~a;#res := 0; 510#recFINAL assume true; 512#recEXIT >#45#return; 511#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 502#L10-2 assume !(~rescopy~0 > 0); 503#L10-3 #res := 1 + ~res~0; 508#recFINAL assume true; 509#recEXIT >#45#return; 506#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 507#L10-2 [2020-11-28 03:04:06,702 INFO L796 eck$LassoCheckResult]: Loop: 507#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 507#L10-2 [2020-11-28 03:04:06,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:06,702 INFO L82 PathProgramCache]: Analyzing trace with hash -274003163, now seen corresponding path program 1 times [2020-11-28 03:04:06,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:06,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816263934] [2020-11-28 03:04:06,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:06,718 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:06,729 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:06,732 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:06,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:06,735 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 2 times [2020-11-28 03:04:06,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:06,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867756598] [2020-11-28 03:04:06,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:06,739 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:06,742 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:06,743 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:06,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:06,743 INFO L82 PathProgramCache]: Analyzing trace with hash 95836554, now seen corresponding path program 1 times [2020-11-28 03:04:06,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:06,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490810578] [2020-11-28 03:04:06,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:06,763 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:06,775 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:06,781 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:06,795 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:06,795 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:06,795 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:06,795 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:06,796 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:04:06,796 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:06,796 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:06,796 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:06,796 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration5_Loop [2020-11-28 03:04:06,796 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:06,796 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:06,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:06,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:06,829 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:06,829 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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) [2020-11-28 03:04:06,835 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:06,835 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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) [2020-11-28 03:04:06,875 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:04:06,875 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:06,916 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:04:06,917 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:06,918 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:06,918 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:06,918 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:06,918 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:04:06,918 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:06,918 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:06,918 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:06,918 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration5_Loop [2020-11-28 03:04:06,918 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:06,918 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:06,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:06,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:06,953 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:06,953 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9c09b5-de48-423b-98cb-b5276c4f8897/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) [2020-11-28 03:04:06,957 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:04:06,958 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:06,958 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:06,959 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:06,959 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:06,959 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:06,960 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:06,961 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:06,963 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:04:06,967 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:04:06,967 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_ef9c09b5-de48-423b-98cb-b5276c4f8897/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:06,970 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:04:06,970 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:04:06,970 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:04:06,970 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:07,005 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:04:07,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:07,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:04:07,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:07,085 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:04:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:07,105 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:04:07,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:07,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:07,107 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2020-11-28 03:04:07,107 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-28 03:04:07,155 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 29 transitions. Complement of second has 7 states. [2020-11-28 03:04:07,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:04:07,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:04:07,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-11-28 03:04:07,157 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2020-11-28 03:04:07,157 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:07,158 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:04:07,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:07,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:04:07,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:07,234 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:04:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:07,250 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:04:07,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:07,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:07,252 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2020-11-28 03:04:07,254 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-28 03:04:07,304 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 29 transitions. Complement of second has 7 states. [2020-11-28 03:04:07,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:04:07,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:04:07,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-11-28 03:04:07,306 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2020-11-28 03:04:07,306 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:07,306 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:04:07,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:07,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:04:07,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:07,381 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:04:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:07,391 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:04:07,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:07,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:07,392 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2020-11-28 03:04:07,392 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-28 03:04:07,443 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 32 states and 40 transitions. Complement of second has 9 states. [2020-11-28 03:04:07,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:04:07,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:04:07,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2020-11-28 03:04:07,444 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 1 letters. [2020-11-28 03:04:07,445 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:07,445 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 20 letters. Loop has 1 letters. [2020-11-28 03:04:07,445 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:07,445 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 2 letters. [2020-11-28 03:04:07,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:07,446 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 40 transitions. [2020-11-28 03:04:07,447 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:04:07,447 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2020-11-28 03:04:07,447 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 03:04:07,447 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 03:04:07,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 03:04:07,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:04:07,448 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:04:07,448 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:04:07,448 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:04:07,448 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-28 03:04:07,448 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:04:07,448 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:04:07,448 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 03:04:07,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:04:07 BoogieIcfgContainer [2020-11-28 03:04:07,454 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:04:07,454 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:04:07,454 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:04:07,455 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:04:07,455 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:02" (3/4) ... [2020-11-28 03:04:07,458 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:04:07,458 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:04:07,460 INFO L168 Benchmark]: Toolchain (without parser) took 5676.00 ms. Allocated memory was 121.6 MB in the beginning and 157.3 MB in the end (delta: 35.7 MB). Free memory was 93.2 MB in the beginning and 52.8 MB in the end (delta: 40.4 MB). Peak memory consumption was 76.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:07,460 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 79.7 MB. Free memory is still 39.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:04:07,461 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.20 ms. Allocated memory is still 121.6 MB. Free memory was 92.9 MB in the beginning and 99.7 MB in the end (delta: -6.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:07,461 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.24 ms. Allocated memory is still 121.6 MB. Free memory was 99.7 MB in the beginning and 98.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:04:07,462 INFO L168 Benchmark]: Boogie Preprocessor took 16.89 ms. Allocated memory is still 121.6 MB. Free memory was 98.3 MB in the beginning and 97.5 MB in the end (delta: 787.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:04:07,462 INFO L168 Benchmark]: RCFGBuilder took 305.58 ms. Allocated memory is still 121.6 MB. Free memory was 97.5 MB in the beginning and 87.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:07,463 INFO L168 Benchmark]: BuchiAutomizer took 5034.59 ms. Allocated memory was 121.6 MB in the beginning and 157.3 MB in the end (delta: 35.7 MB). Free memory was 87.8 MB in the beginning and 53.9 MB in the end (delta: 33.9 MB). Peak memory consumption was 70.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:07,464 INFO L168 Benchmark]: Witness Printer took 3.96 ms. Allocated memory is still 157.3 MB. Free memory was 53.9 MB in the beginning and 52.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:07,466 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 79.7 MB. Free memory is still 39.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 284.20 ms. Allocated memory is still 121.6 MB. Free memory was 92.9 MB in the beginning and 99.7 MB in the end (delta: -6.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 25.24 ms. Allocated memory is still 121.6 MB. Free memory was 99.7 MB in the beginning and 98.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.89 ms. Allocated memory is still 121.6 MB. Free memory was 98.3 MB in the beginning and 97.5 MB in the end (delta: 787.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 305.58 ms. Allocated memory is still 121.6 MB. Free memory was 97.5 MB in the beginning and 87.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 5034.59 ms. Allocated memory was 121.6 MB in the beginning and 157.3 MB in the end (delta: 35.7 MB). Free memory was 87.8 MB in the beginning and 53.9 MB in the end (delta: 33.9 MB). Peak memory consumption was 70.8 MB. Max. memory is 16.1 GB. * Witness Printer took 3.96 ms. Allocated memory is still 157.3 MB. Free memory was 53.9 MB in the beginning and 52.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (3 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(a) and consists of 5 locations. One deterministic module has affine ranking function rescopy and consists of 4 locations. One nondeterministic module has affine ranking function rescopy and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.9s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 3.5s. Construction of modules took 0.1s. Büchi inclusion checks took 1.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 29 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 102 SDtfs, 91 SDslu, 140 SDs, 0 SdLazy, 85 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc1 concLT1 SILN1 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax100 hnf98 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq170 hnf94 smp100 dnf120 smp100 tf108 neg97 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 127ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 17 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...