./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Piecewise.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_5902e162-fadb-4ca1-a1a7-14b230fee3b8/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Piecewise.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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 36155f521cfe170e9c03fd915618e68821fe0430 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:46:45,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:46:45,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:46:45,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:46:45,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:46:45,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:46:45,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:46:45,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:46:45,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:46:45,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:46:45,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:46:45,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:46:45,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:46:45,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:46:45,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:46:45,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:46:45,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:46:45,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:46:45,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:46:45,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:46:45,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:46:45,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:46:45,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:46:45,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:46:45,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:46:45,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:46:45,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:46:45,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:46:45,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:46:45,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:46:45,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:46:45,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:46:45,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:46:45,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:46:45,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:46:45,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:46:45,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:46:45,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:46:45,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:46:45,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:46:45,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:46:45,444 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-30 00:46:45,470 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:46:45,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:46:45,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:46:45,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:46:45,472 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:46:45,472 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:46:45,473 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:46:45,473 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:46:45,473 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:46:45,473 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:46:45,473 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:46:45,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:46:45,474 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:46:45,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:46:45,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:46:45,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:46:45,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:46:45,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:46:45,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:46:45,476 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:46:45,476 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:46:45,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:46:45,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:46:45,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:46:45,477 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:46:45,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:46:45,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:46:45,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:46:45,478 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:46:45,479 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:46:45,479 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_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36155f521cfe170e9c03fd915618e68821fe0430 [2020-11-30 00:46:45,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:46:45,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:46:45,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:46:45,804 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:46:45,805 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:46:45,806 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Piecewise.c [2020-11-30 00:46:45,881 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/bin/uautomizer/data/bb0eb0894/17933595037c4c5ebc30b131d02f8f3d/FLAGbd14534be [2020-11-30 00:46:46,404 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:46:46,404 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/sv-benchmarks/c/termination-crafted/Piecewise.c [2020-11-30 00:46:46,410 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/bin/uautomizer/data/bb0eb0894/17933595037c4c5ebc30b131d02f8f3d/FLAGbd14534be [2020-11-30 00:46:46,775 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/bin/uautomizer/data/bb0eb0894/17933595037c4c5ebc30b131d02f8f3d [2020-11-30 00:46:46,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:46:46,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:46:46,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:46:46,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:46:46,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:46:46,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:46:46" (1/1) ... [2020-11-30 00:46:46,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ff2300b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:46, skipping insertion in model container [2020-11-30 00:46:46,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:46:46" (1/1) ... [2020-11-30 00:46:46,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:46:46,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:46:46,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:46:46,973 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:46:46,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:46:47,018 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:46:47,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:47 WrapperNode [2020-11-30 00:46:47,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:46:47,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:46:47,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:46:47,023 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:46:47,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:47" (1/1) ... [2020-11-30 00:46:47,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:47" (1/1) ... [2020-11-30 00:46:47,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:46:47,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:46:47,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:46:47,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:46:47,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:47" (1/1) ... [2020-11-30 00:46:47,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:47" (1/1) ... [2020-11-30 00:46:47,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:47" (1/1) ... [2020-11-30 00:46:47,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:47" (1/1) ... [2020-11-30 00:46:47,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:47" (1/1) ... [2020-11-30 00:46:47,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:47" (1/1) ... [2020-11-30 00:46:47,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:47" (1/1) ... [2020-11-30 00:46:47,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:46:47,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:46:47,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:46:47,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:46:47,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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 [2020-11-30 00:46:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:46:47,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:46:47,349 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:46:47,350 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-30 00:46:47,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:46:47 BoogieIcfgContainer [2020-11-30 00:46:47,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:46:47,353 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:46:47,353 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:46:47,357 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:46:47,358 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:46:47,358 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:46:46" (1/3) ... [2020-11-30 00:46:47,360 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@20c1ef0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:46:47, skipping insertion in model container [2020-11-30 00:46:47,360 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:46:47,360 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:47" (2/3) ... [2020-11-30 00:46:47,360 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@20c1ef0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:46:47, skipping insertion in model container [2020-11-30 00:46:47,361 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:46:47,361 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:46:47" (3/3) ... [2020-11-30 00:46:47,362 INFO L373 chiAutomizerObserver]: Analyzing ICFG Piecewise.c [2020-11-30 00:46:47,410 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:46:47,411 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:46:47,411 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:46:47,411 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:46:47,411 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:46:47,411 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:46:47,411 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:46:47,412 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:46:47,424 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-30 00:46:47,444 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 00:46:47,445 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:46:47,445 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:46:47,469 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-30 00:46:47,469 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 00:46:47,469 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:46:47,469 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-30 00:46:47,470 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 00:46:47,471 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:46:47,471 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:46:47,471 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-30 00:46:47,471 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 00:46:47,479 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 8#L26-2true [2020-11-30 00:46:47,481 INFO L796 eck$LassoCheckResult]: Loop: 8#L26-2true assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 6#L23true assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 8#L26-2true [2020-11-30 00:46:47,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:47,494 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-30 00:46:47,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:47,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680751952] [2020-11-30 00:46:47,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:47,596 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:47,601 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:47,637 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:47,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:47,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-11-30 00:46:47,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:47,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441044210] [2020-11-30 00:46:47,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:47,664 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:47,688 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:47,690 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:47,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:47,696 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-11-30 00:46:47,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:47,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531591963] [2020-11-30 00:46:47,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:47,718 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:47,736 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:47,739 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:47,852 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2020-11-30 00:46:47,896 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:46:47,898 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:46:47,898 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:46:47,899 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:46:47,899 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:46:47,899 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:47,899 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:46:47,899 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:46:47,900 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration1_Loop [2020-11-30 00:46:47,900 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:46:47,900 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:46:47,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:47,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:47,949 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:48,147 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:46:48,148 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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) [2020-11-30 00:46:48,161 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:46:48,161 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 [2020-11-30 00:46:48,174 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:46:48,175 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:48,215 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:46:48,215 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:46:48,220 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:46:48,221 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:48,268 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:46:48,268 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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) [2020-11-30 00:46:48,299 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:48,299 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:46:48,348 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:46:48,350 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:46:48,350 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:46:48,351 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:46:48,351 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:46:48,351 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:46:48,351 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:48,351 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:46:48,351 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:46:48,351 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration1_Loop [2020-11-30 00:46:48,352 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:46:48,352 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:46:48,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:48,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:48,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:48,483 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:46:48,488 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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) [2020-11-30 00:46:48,493 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 [2020-11-30 00:46:48,496 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:46:48,496 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:46:48,496 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:46:48,496 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:48,507 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:46:48,508 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:46:48,520 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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) [2020-11-30 00:46:48,565 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 [2020-11-30 00:46:48,567 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:46:48,568 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:46:48,568 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:46:48,568 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:46:48,572 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:46:48,572 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:48,578 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:48,618 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:46:48,620 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:46:48,621 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:46:48,621 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:46:48,621 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:46:48,621 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:46:48,626 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:46:48,626 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:46:48,634 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:46:48,641 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:46:48,641 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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) [2020-11-30 00:46:48,673 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:46:48,673 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:46:48,673 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:46:48,674 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:48,716 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:46:48,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:48,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:46:48,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:48,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:46:48,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:48,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:46:48,809 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 00:46:48,810 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-11-30 00:46:48,905 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 37 states and 48 transitions. Complement of second has 8 states. [2020-11-30 00:46:48,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 00:46:48,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:46:48,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2020-11-30 00:46:48,912 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 2 letters. [2020-11-30 00:46:48,923 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:48,923 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-30 00:46:48,924 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:48,924 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 4 letters. [2020-11-30 00:46:48,924 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:48,925 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 48 transitions. [2020-11-30 00:46:48,935 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-30 00:46:48,940 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 13 states and 19 transitions. [2020-11-30 00:46:48,942 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-30 00:46:48,942 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-11-30 00:46:48,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2020-11-30 00:46:48,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:46:48,943 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2020-11-30 00:46:48,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2020-11-30 00:46:48,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-11-30 00:46:48,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 00:46:48,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2020-11-30 00:46:48,974 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2020-11-30 00:46:48,975 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2020-11-30 00:46:48,975 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:46:48,975 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2020-11-30 00:46:48,976 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-30 00:46:48,976 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:46:48,976 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:46:48,977 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 00:46:48,977 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:46:48,977 INFO L794 eck$LassoCheckResult]: Stem: 86#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 87#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 88#L23 [2020-11-30 00:46:48,977 INFO L796 eck$LassoCheckResult]: Loop: 88#L23 assume !(main_~q~0 < main_~p~0); 89#L26 assume !(main_~p~0 < main_~q~0); 92#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 88#L23 [2020-11-30 00:46:48,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:48,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-30 00:46:48,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:48,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041685394] [2020-11-30 00:46:48,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:49,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:49,011 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:49,021 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:49,022 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:49,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:49,023 INFO L82 PathProgramCache]: Analyzing trace with hash 44836, now seen corresponding path program 1 times [2020-11-30 00:46:49,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:49,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582289604] [2020-11-30 00:46:49,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:49,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:46:49,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582289604] [2020-11-30 00:46:49,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:46:49,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:46:49,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703401156] [2020-11-30 00:46:49,096 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 00:46:49,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:46:49,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:46:49,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:46:49,102 INFO L87 Difference]: Start difference. First operand 12 states and 18 transitions. cyclomatic complexity: 9 Second operand 4 states. [2020-11-30 00:46:49,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:46:49,129 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2020-11-30 00:46:49,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:46:49,130 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2020-11-30 00:46:49,131 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 00:46:49,132 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 12 transitions. [2020-11-30 00:46:49,132 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-11-30 00:46:49,132 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-11-30 00:46:49,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2020-11-30 00:46:49,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:46:49,132 INFO L691 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2020-11-30 00:46:49,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2020-11-30 00:46:49,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2020-11-30 00:46:49,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-30 00:46:49,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2020-11-30 00:46:49,134 INFO L714 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-11-30 00:46:49,134 INFO L594 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-11-30 00:46:49,135 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 00:46:49,135 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2020-11-30 00:46:49,135 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 00:46:49,135 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:46:49,136 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:46:49,136 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-30 00:46:49,136 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:46:49,136 INFO L794 eck$LassoCheckResult]: Stem: 116#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 117#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 118#L23 assume !(main_~q~0 < main_~p~0); 114#L26 [2020-11-30 00:46:49,136 INFO L796 eck$LassoCheckResult]: Loop: 114#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 115#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 121#L23 assume !(main_~q~0 < main_~p~0); 114#L26 [2020-11-30 00:46:49,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:49,137 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2020-11-30 00:46:49,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:49,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350737993] [2020-11-30 00:46:49,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:49,143 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:49,147 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:49,149 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:49,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:49,150 INFO L82 PathProgramCache]: Analyzing trace with hash 47414, now seen corresponding path program 1 times [2020-11-30 00:46:49,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:49,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721792120] [2020-11-30 00:46:49,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:49,162 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:49,169 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:49,170 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:49,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:49,174 INFO L82 PathProgramCache]: Analyzing trace with hash 925832530, now seen corresponding path program 1 times [2020-11-30 00:46:49,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:49,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983668693] [2020-11-30 00:46:49,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:49,187 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:49,197 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:49,203 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:49,269 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:46:49,269 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:46:49,269 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:46:49,269 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:46:49,269 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:46:49,269 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:49,270 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:46:49,270 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:46:49,270 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration3_Loop [2020-11-30 00:46:49,270 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:46:49,270 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:46:49,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:49,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:49,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:49,439 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:46:49,439 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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) [2020-11-30 00:46:49,447 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:46:49,447 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 [2020-11-30 00:46:49,453 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:46:49,453 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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) [2020-11-30 00:46:49,504 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:46:49,504 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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) [2020-11-30 00:46:49,554 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:46:49,555 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 [2020-11-30 00:46:49,726 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:46:49,728 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:46:49,728 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:46:49,728 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:46:49,728 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:46:49,728 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:46:49,728 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:49,728 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:46:49,729 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:46:49,729 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration3_Loop [2020-11-30 00:46:49,729 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:46:49,729 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:46:49,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:49,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:49,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:49,934 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:46:49,934 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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) [2020-11-30 00:46:49,944 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 [2020-11-30 00:46:49,945 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:46:49,946 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:46:49,946 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:46:49,946 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:46:49,953 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:46:49,953 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:49,963 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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) [2020-11-30 00:46:49,999 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 [2020-11-30 00:46:50,002 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:46:50,002 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:46:50,002 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:46:50,002 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:46:50,002 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:50,007 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:46:50,007 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:46:50,010 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:46:50,013 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-30 00:46:50,014 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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 [2020-11-30 00:46:50,017 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:46:50,017 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:46:50,017 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:46:50,017 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0) = 1*ULTIMATE.start_main_~p~0 Supporting invariants [] [2020-11-30 00:46:50,040 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:46:50,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:50,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:46:50,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:50,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:46:50,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:50,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:46:50,145 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-30 00:46:50,145 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 4 states. [2020-11-30 00:46:50,173 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 16 states and 20 transitions. Complement of second has 7 states. [2020-11-30 00:46:50,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 00:46:50,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 00:46:50,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-11-30 00:46:50,175 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2020-11-30 00:46:50,175 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:50,175 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-30 00:46:50,175 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:50,175 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2020-11-30 00:46:50,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:50,176 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 20 transitions. [2020-11-30 00:46:50,177 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 00:46:50,178 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 13 states and 17 transitions. [2020-11-30 00:46:50,178 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-11-30 00:46:50,178 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-30 00:46:50,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2020-11-30 00:46:50,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:46:50,178 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2020-11-30 00:46:50,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2020-11-30 00:46:50,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-11-30 00:46:50,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 00:46:50,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2020-11-30 00:46:50,181 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2020-11-30 00:46:50,181 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2020-11-30 00:46:50,181 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 00:46:50,181 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2020-11-30 00:46:50,182 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 00:46:50,182 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:46:50,182 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:46:50,182 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2020-11-30 00:46:50,182 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 00:46:50,183 INFO L794 eck$LassoCheckResult]: Stem: 185#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 186#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 190#L23 assume !(main_~q~0 < main_~p~0); 192#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 184#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 191#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 182#L26-2 [2020-11-30 00:46:50,183 INFO L796 eck$LassoCheckResult]: Loop: 182#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 187#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 182#L26-2 [2020-11-30 00:46:50,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:50,183 INFO L82 PathProgramCache]: Analyzing trace with hash 925832528, now seen corresponding path program 1 times [2020-11-30 00:46:50,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:50,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422474025] [2020-11-30 00:46:50,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:50,192 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:50,199 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:50,200 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:50,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:50,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2020-11-30 00:46:50,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:50,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703165536] [2020-11-30 00:46:50,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:50,206 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:50,209 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:50,210 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:50,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:50,211 INFO L82 PathProgramCache]: Analyzing trace with hash 666829459, now seen corresponding path program 2 times [2020-11-30 00:46:50,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:50,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554445113] [2020-11-30 00:46:50,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:50,220 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:50,228 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:50,230 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:50,275 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:46:50,276 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:46:50,276 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:46:50,276 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:46:50,276 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:46:50,276 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:50,276 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:46:50,276 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:46:50,276 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration4_Loop [2020-11-30 00:46:50,276 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:46:50,276 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:46:50,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:50,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:50,311 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:50,385 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:46:50,385 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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) [2020-11-30 00:46:50,400 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:46:50,400 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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 [2020-11-30 00:46:50,433 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:46:50,433 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:46:50,462 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:46:50,464 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:46:50,464 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:46:50,465 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:46:50,465 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:46:50,465 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:46:50,465 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:50,465 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:46:50,465 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:46:50,465 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration4_Loop [2020-11-30 00:46:50,465 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:46:50,465 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:46:50,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:50,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:50,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:50,631 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:46:50,631 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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) [2020-11-30 00:46:50,639 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 [2020-11-30 00:46:50,641 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:46:50,641 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:50,641 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:46:50,641 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:46:50,641 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:46:50,644 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:46:50,644 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:46:50,647 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:46:50,651 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-30 00:46:50,651 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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) [2020-11-30 00:46:50,658 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:46:50,658 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:46:50,659 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:46:50,659 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:50,697 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:46:50,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:50,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:46:50,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:50,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:46:50,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:50,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:46:50,768 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 00:46:50,768 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-11-30 00:46:50,792 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 27 states and 34 transitions. Complement of second has 5 states. [2020-11-30 00:46:50,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 00:46:50,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:46:50,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-11-30 00:46:50,794 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2020-11-30 00:46:50,794 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:50,795 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2020-11-30 00:46:50,795 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:50,795 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2020-11-30 00:46:50,795 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:50,795 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 34 transitions. [2020-11-30 00:46:50,797 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 00:46:50,798 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 23 states and 30 transitions. [2020-11-30 00:46:50,798 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-30 00:46:50,798 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-11-30 00:46:50,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2020-11-30 00:46:50,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:46:50,798 INFO L691 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2020-11-30 00:46:50,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2020-11-30 00:46:50,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-11-30 00:46:50,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-30 00:46:50,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2020-11-30 00:46:50,807 INFO L714 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2020-11-30 00:46:50,807 INFO L594 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2020-11-30 00:46:50,807 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-30 00:46:50,808 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 28 transitions. [2020-11-30 00:46:50,809 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 00:46:50,809 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:46:50,809 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:46:50,810 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2020-11-30 00:46:50,810 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 00:46:50,811 INFO L794 eck$LassoCheckResult]: Stem: 268#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 269#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 272#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 273#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 276#L23 assume !(main_~q~0 < main_~p~0); 265#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 266#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 279#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 280#L26-2 [2020-11-30 00:46:50,811 INFO L796 eck$LassoCheckResult]: Loop: 280#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 281#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 280#L26-2 [2020-11-30 00:46:50,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:50,812 INFO L82 PathProgramCache]: Analyzing trace with hash 602336749, now seen corresponding path program 3 times [2020-11-30 00:46:50,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:50,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556531602] [2020-11-30 00:46:50,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:50,833 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:50,841 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:50,843 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:50,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:50,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2020-11-30 00:46:50,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:50,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820742343] [2020-11-30 00:46:50,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:50,849 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:50,852 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:50,853 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:50,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:50,854 INFO L82 PathProgramCache]: Analyzing trace with hash -974968848, now seen corresponding path program 4 times [2020-11-30 00:46:50,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:50,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437530762] [2020-11-30 00:46:50,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:50,871 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:50,889 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:50,892 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:50,947 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:46:50,947 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:46:50,948 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:46:50,948 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:46:50,948 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:46:50,948 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:50,948 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:46:50,948 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:46:50,948 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration5_Loop [2020-11-30 00:46:50,948 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:46:50,948 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:46:50,949 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:50,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:50,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:51,040 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:46:51,040 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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 [2020-11-30 00:46:51,057 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:46:51,057 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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 [2020-11-30 00:46:51,088 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:46:51,088 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:46:51,123 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:46:51,124 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:46:51,125 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:46:51,125 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:46:51,125 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:46:51,125 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:46:51,125 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:51,125 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:46:51,125 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:46:51,125 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration5_Loop [2020-11-30 00:46:51,125 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:46:51,125 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:46:51,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:51,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:51,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:51,213 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:46:51,213 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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 [2020-11-30 00:46:51,219 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 [2020-11-30 00:46:51,220 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:46:51,221 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:46:51,221 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:46:51,221 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:46:51,221 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:46:51,223 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:46:51,224 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:46:51,227 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:46:51,253 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:46:51,253 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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) [2020-11-30 00:46:51,257 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:46:51,257 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:46:51,257 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:46:51,257 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:51,283 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:46:51,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:51,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:46:51,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:51,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:46:51,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:51,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:46:51,359 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 00:46:51,359 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 12 Second operand 3 states. [2020-11-30 00:46:51,384 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 12. Second operand 3 states. Result 29 states and 38 transitions. Complement of second has 5 states. [2020-11-30 00:46:51,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 00:46:51,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:46:51,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-11-30 00:46:51,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2020-11-30 00:46:51,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:51,386 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:46:51,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:51,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:46:51,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:51,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:46:51,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:51,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:46:51,455 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 00:46:51,455 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 12 Second operand 3 states. [2020-11-30 00:46:51,485 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 12. Second operand 3 states. Result 29 states and 38 transitions. Complement of second has 5 states. [2020-11-30 00:46:51,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 00:46:51,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:46:51,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-11-30 00:46:51,489 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2020-11-30 00:46:51,490 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:51,490 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:46:51,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:51,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:46:51,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:51,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:46:51,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:51,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:46:51,551 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 00:46:51,551 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 12 Second operand 3 states. [2020-11-30 00:46:51,573 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 12. Second operand 3 states. Result 33 states and 45 transitions. Complement of second has 4 states. [2020-11-30 00:46:51,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 00:46:51,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:46:51,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-30 00:46:51,574 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 2 letters. [2020-11-30 00:46:51,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:51,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 10 letters. Loop has 2 letters. [2020-11-30 00:46:51,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:51,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 4 letters. [2020-11-30 00:46:51,576 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:51,576 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 45 transitions. [2020-11-30 00:46:51,578 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-11-30 00:46:51,578 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 27 states and 36 transitions. [2020-11-30 00:46:51,579 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-11-30 00:46:51,579 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-11-30 00:46:51,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 36 transitions. [2020-11-30 00:46:51,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:46:51,587 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-11-30 00:46:51,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 36 transitions. [2020-11-30 00:46:51,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 16. [2020-11-30 00:46:51,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 00:46:51,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2020-11-30 00:46:51,594 INFO L714 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2020-11-30 00:46:51,594 INFO L594 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2020-11-30 00:46:51,594 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-30 00:46:51,594 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2020-11-30 00:46:51,595 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-11-30 00:46:51,598 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:46:51,598 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:46:51,599 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2020-11-30 00:46:51,599 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1] [2020-11-30 00:46:51,599 INFO L794 eck$LassoCheckResult]: Stem: 503#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 504#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 512#L23 assume !(main_~q~0 < main_~p~0); 511#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 502#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 509#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 510#L26-2 [2020-11-30 00:46:51,599 INFO L796 eck$LassoCheckResult]: Loop: 510#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 505#L23 assume !(main_~q~0 < main_~p~0); 499#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 500#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 508#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 510#L26-2 [2020-11-30 00:46:51,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:51,600 INFO L82 PathProgramCache]: Analyzing trace with hash 925832528, now seen corresponding path program 5 times [2020-11-30 00:46:51,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:51,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908387516] [2020-11-30 00:46:51,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:51,616 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:51,624 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:51,626 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:51,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:51,628 INFO L82 PathProgramCache]: Analyzing trace with hash 38328847, now seen corresponding path program 1 times [2020-11-30 00:46:51,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:51,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856010694] [2020-11-30 00:46:51,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:51,634 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:51,638 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:51,640 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:51,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:51,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1292746272, now seen corresponding path program 6 times [2020-11-30 00:46:51,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:51,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138269070] [2020-11-30 00:46:51,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:51,650 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:51,657 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:51,660 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:51,738 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:46:51,738 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:46:51,738 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:46:51,739 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:46:51,739 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:46:51,739 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:51,739 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:46:51,739 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:46:51,739 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration6_Loop [2020-11-30 00:46:51,739 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:46:51,739 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:46:51,740 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:51,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:51,767 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:51,835 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:46:51,835 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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) [2020-11-30 00:46:51,841 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:46:51,841 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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) [2020-11-30 00:46:51,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:46:51,888 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:52,054 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:46:52,056 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:46:52,056 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:46:52,056 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:46:52,056 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:46:52,056 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:46:52,056 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:52,056 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:46:52,056 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:46:52,056 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration6_Loop [2020-11-30 00:46:52,056 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:46:52,057 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:46:52,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:52,077 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:52,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:52,153 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:46:52,153 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:52,155 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 [2020-11-30 00:46:52,157 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:46:52,157 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:46:52,158 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:46:52,158 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:46:52,158 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:46:52,160 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:46:52,160 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:46:52,167 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:46:52,176 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-30 00:46:52,176 INFO L444 ModelExtractionUtils]: 4 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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) [2020-11-30 00:46:52,211 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:46:52,212 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:46:52,212 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:46:52,212 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:52,254 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:46:52,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:52,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:46:52,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:52,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:46:52,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:52,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:46:52,327 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-30 00:46:52,327 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 22 transitions. cyclomatic complexity: 9 Second operand 5 states. [2020-11-30 00:46:52,369 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 22 transitions. cyclomatic complexity: 9. Second operand 5 states. Result 41 states and 58 transitions. Complement of second has 8 states. [2020-11-30 00:46:52,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-30 00:46:52,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-30 00:46:52,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2020-11-30 00:46:52,370 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 6 letters. Loop has 5 letters. [2020-11-30 00:46:52,371 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:52,371 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 11 letters. Loop has 5 letters. [2020-11-30 00:46:52,371 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:52,371 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 6 letters. Loop has 10 letters. [2020-11-30 00:46:52,371 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:52,372 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 58 transitions. [2020-11-30 00:46:52,373 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 00:46:52,374 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 34 states and 48 transitions. [2020-11-30 00:46:52,374 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-30 00:46:52,375 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-11-30 00:46:52,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 48 transitions. [2020-11-30 00:46:52,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:46:52,375 INFO L691 BuchiCegarLoop]: Abstraction has 34 states and 48 transitions. [2020-11-30 00:46:52,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 48 transitions. [2020-11-30 00:46:52,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 23. [2020-11-30 00:46:52,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 00:46:52,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 35 transitions. [2020-11-30 00:46:52,378 INFO L714 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2020-11-30 00:46:52,378 INFO L594 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2020-11-30 00:46:52,378 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-30 00:46:52,379 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 35 transitions. [2020-11-30 00:46:52,379 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 00:46:52,379 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:46:52,380 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:46:52,380 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 1, 1, 1, 1] [2020-11-30 00:46:52,380 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:46:52,380 INFO L794 eck$LassoCheckResult]: Stem: 620#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 621#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 632#L23 assume !(main_~q~0 < main_~p~0); 616#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 617#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 629#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 630#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 626#L23 [2020-11-30 00:46:52,381 INFO L796 eck$LassoCheckResult]: Loop: 626#L23 assume !(main_~q~0 < main_~p~0); 628#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 625#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 626#L23 [2020-11-30 00:46:52,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:52,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1363962694, now seen corresponding path program 7 times [2020-11-30 00:46:52,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:52,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710885106] [2020-11-30 00:46:52,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:52,403 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:52,408 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:52,410 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:52,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:52,418 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 2 times [2020-11-30 00:46:52,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:52,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093444545] [2020-11-30 00:46:52,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:52,425 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:52,428 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:52,429 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:52,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:52,429 INFO L82 PathProgramCache]: Analyzing trace with hash 872985485, now seen corresponding path program 8 times [2020-11-30 00:46:52,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:52,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564119475] [2020-11-30 00:46:52,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:52,437 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:52,442 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:52,444 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:52,497 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:46:52,497 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:46:52,497 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:46:52,497 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:46:52,497 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:46:52,497 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:52,497 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:46:52,498 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:46:52,498 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration7_Loop [2020-11-30 00:46:52,498 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:46:52,498 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:46:52,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:52,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:52,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:52,648 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:46:52,648 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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 [2020-11-30 00:46:52,663 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:46:52,663 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:46:52,667 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:46:52,667 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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 [2020-11-30 00:46:52,697 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:46:52,697 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:46:52,699 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:46:52,699 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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 [2020-11-30 00:46:52,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:46:52,722 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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 [2020-11-30 00:46:52,747 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:46:52,748 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:46:53,034 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:46:53,036 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:46:53,036 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:46:53,036 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:46:53,036 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:46:53,036 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:46:53,036 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:53,036 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:46:53,037 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:46:53,037 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration7_Loop [2020-11-30 00:46:53,037 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:46:53,037 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:46:53,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:53,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:53,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:53,263 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 22 [2020-11-30 00:46:53,265 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:46:53,265 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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 [2020-11-30 00:46:53,268 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 [2020-11-30 00:46:53,269 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:46:53,269 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:46:53,269 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:46:53,269 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:46:53,271 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:46:53,271 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:46:53,274 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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 [2020-11-30 00:46:53,298 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 [2020-11-30 00:46:53,300 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:46:53,300 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:46:53,300 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:46:53,300 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:46:53,302 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:46:53,303 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:46:53,324 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/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 [2020-11-30 00:46:53,369 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 [2020-11-30 00:46:53,370 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:46:53,370 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:46:53,371 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:46:53,371 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-30 00:46:53,371 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:46:53,374 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-30 00:46:53,375 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:46:53,379 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:46:53,386 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:46:53,387 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5902e162-fadb-4ca1-a1a7-14b230fee3b8/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:53,390 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:46:53,390 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:46:53,390 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:46:53,390 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0) = 1*ULTIMATE.start_main_~p~0 Supporting invariants [] [2020-11-30 00:46:53,411 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:46:53,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:53,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:46:53,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:53,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:46:53,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:46:53,453 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 00:46:53,453 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17 Second operand 4 states. [2020-11-30 00:46:53,474 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17. Second operand 4 states. Result 27 states and 40 transitions. Complement of second has 7 states. [2020-11-30 00:46:53,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 00:46:53,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 00:46:53,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2020-11-30 00:46:53,475 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-30 00:46:53,475 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:53,475 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:46:53,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:53,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:46:53,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:53,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:46:53,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:53,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:46:53,528 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 00:46:53,528 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17 Second operand 4 states. [2020-11-30 00:46:53,549 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17. Second operand 4 states. Result 27 states and 40 transitions. Complement of second has 7 states. [2020-11-30 00:46:53,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 00:46:53,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 00:46:53,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2020-11-30 00:46:53,550 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-30 00:46:53,550 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:53,550 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:46:53,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:53,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:46:53,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:53,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:46:53,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:53,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:46:53,614 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 00:46:53,614 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17 Second operand 4 states. [2020-11-30 00:46:53,639 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17. Second operand 4 states. Result 36 states and 57 transitions. Complement of second has 6 states. [2020-11-30 00:46:53,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 00:46:53,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 00:46:53,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2020-11-30 00:46:53,643 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-30 00:46:53,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:53,644 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-30 00:46:53,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:53,644 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-30 00:46:53,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:53,645 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 57 transitions. [2020-11-30 00:46:53,646 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:46:53,646 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 0 states and 0 transitions. [2020-11-30 00:46:53,646 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 00:46:53,646 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 00:46:53,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 00:46:53,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:46:53,647 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:46:53,647 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:46:53,647 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:46:53,647 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-30 00:46:53,647 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:46:53,647 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:46:53,647 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-30 00:46:53,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:46:53 BoogieIcfgContainer [2020-11-30 00:46:53,653 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:46:53,654 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:46:53,654 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:46:53,654 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:46:53,654 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:46:47" (3/4) ... [2020-11-30 00:46:53,657 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:46:53,657 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:46:53,658 INFO L168 Benchmark]: Toolchain (without parser) took 6878.35 ms. Allocated memory was 83.9 MB in the beginning and 132.1 MB in the end (delta: 48.2 MB). Free memory was 53.4 MB in the beginning and 71.9 MB in the end (delta: -18.5 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:46:53,659 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 83.9 MB. Free memory was 43.9 MB in the beginning and 43.9 MB in the end (delta: 30.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:46:53,659 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.56 ms. Allocated memory is still 83.9 MB. Free memory was 53.2 MB in the beginning and 63.8 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:46:53,660 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.37 ms. Allocated memory is still 83.9 MB. Free memory was 63.8 MB in the beginning and 62.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:46:53,660 INFO L168 Benchmark]: Boogie Preprocessor took 18.99 ms. Allocated memory is still 83.9 MB. Free memory was 62.5 MB in the beginning and 61.7 MB in the end (delta: 810.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:46:53,661 INFO L168 Benchmark]: RCFGBuilder took 274.23 ms. Allocated memory is still 83.9 MB. Free memory was 61.6 MB in the beginning and 53.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:46:53,662 INFO L168 Benchmark]: BuchiAutomizer took 6300.43 ms. Allocated memory was 83.9 MB in the beginning and 132.1 MB in the end (delta: 48.2 MB). Free memory was 53.2 MB in the beginning and 71.9 MB in the end (delta: -18.7 MB). Peak memory consumption was 31.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:46:53,662 INFO L168 Benchmark]: Witness Printer took 3.77 ms. Allocated memory is still 132.1 MB. Free memory is still 71.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:46:53,665 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 83.9 MB. Free memory was 43.9 MB in the beginning and 43.9 MB in the end (delta: 30.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 239.56 ms. Allocated memory is still 83.9 MB. Free memory was 53.2 MB in the beginning and 63.8 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.37 ms. Allocated memory is still 83.9 MB. Free memory was 63.8 MB in the beginning and 62.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.99 ms. Allocated memory is still 83.9 MB. Free memory was 62.5 MB in the beginning and 61.7 MB in the end (delta: 810.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 274.23 ms. Allocated memory is still 83.9 MB. Free memory was 61.6 MB in the beginning and 53.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 6300.43 ms. Allocated memory was 83.9 MB in the beginning and 132.1 MB in the end (delta: 48.2 MB). Free memory was 53.2 MB in the beginning and 71.9 MB in the end (delta: -18.7 MB). Peak memory consumption was 31.6 MB. Max. memory is 16.1 GB. * Witness Printer took 3.77 ms. Allocated memory is still 132.1 MB. Free memory is still 71.9 MB. There was no memory consumed. 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 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function q and consists of 5 locations. One deterministic module has affine ranking function p and consists of 4 locations. One deterministic module has affine ranking function q and consists of 3 locations. One deterministic module has affine ranking function q and consists of 5 locations. One nondeterministic module has affine ranking function q and consists of 3 locations. One nondeterministic module has affine ranking function p and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.2s and 8 iterations. TraceHistogramMax:3. Analysis of lassos took 4.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 27 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 23 states and ocurred in iteration 6. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 49 SDtfs, 58 SDslu, 9 SDs, 0 SdLazy, 116 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT6 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax163 hnf99 lsp61 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf93 smp96 dnf112 smp98 tf107 neg98 sie117 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 30ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...