./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/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 c0afa1d46bded0eb2bd485bf4790c0d11468ed7a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 07:51:13,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 07:51:13,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 07:51:13,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 07:51:13,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 07:51:13,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 07:51:13,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 07:51:13,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 07:51:13,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 07:51:13,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 07:51:13,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 07:51:13,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 07:51:13,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 07:51:13,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 07:51:13,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 07:51:13,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 07:51:13,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 07:51:13,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 07:51:13,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 07:51:13,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 07:51:13,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 07:51:13,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 07:51:13,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 07:51:13,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 07:51:13,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 07:51:13,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 07:51:13,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 07:51:13,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 07:51:13,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 07:51:13,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 07:51:13,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 07:51:13,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 07:51:13,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 07:51:13,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 07:51:13,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 07:51:13,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 07:51:13,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 07:51:13,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 07:51:13,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 07:51:13,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 07:51:13,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 07:51:13,416 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-20 07:51:13,436 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 07:51:13,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 07:51:13,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 07:51:13,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 07:51:13,438 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 07:51:13,438 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 07:51:13,438 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 07:51:13,438 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 07:51:13,439 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 07:51:13,439 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 07:51:13,439 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 07:51:13,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 07:51:13,440 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 07:51:13,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 07:51:13,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 07:51:13,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 07:51:13,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 07:51:13,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 07:51:13,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 07:51:13,441 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 07:51:13,442 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 07:51:13,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 07:51:13,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 07:51:13,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 07:51:13,443 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 07:51:13,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 07:51:13,443 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 07:51:13,443 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 07:51:13,444 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 07:51:13,444 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/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 -> c0afa1d46bded0eb2bd485bf4790c0d11468ed7a [2019-11-20 07:51:13,614 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 07:51:13,628 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 07:51:13,633 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 07:51:13,634 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 07:51:13,635 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 07:51:13,635 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2019-11-20 07:51:13,700 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/data/5a4ec5647/d1f24adc6bd447ea8f4e1b718c178af5/FLAG6cb7cc977 [2019-11-20 07:51:14,115 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 07:51:14,116 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2019-11-20 07:51:14,123 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/data/5a4ec5647/d1f24adc6bd447ea8f4e1b718c178af5/FLAG6cb7cc977 [2019-11-20 07:51:14,494 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/data/5a4ec5647/d1f24adc6bd447ea8f4e1b718c178af5 [2019-11-20 07:51:14,497 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 07:51:14,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 07:51:14,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 07:51:14,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 07:51:14,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 07:51:14,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:51:14" (1/1) ... [2019-11-20 07:51:14,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47fc88e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:51:14, skipping insertion in model container [2019-11-20 07:51:14,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:51:14" (1/1) ... [2019-11-20 07:51:14,516 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 07:51:14,534 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 07:51:14,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 07:51:14,753 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 07:51:14,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 07:51:14,911 INFO L192 MainTranslator]: Completed translation [2019-11-20 07:51:14,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:51:14 WrapperNode [2019-11-20 07:51:14,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 07:51:14,913 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 07:51:14,913 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 07:51:14,913 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 07:51:14,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:51:14" (1/1) ... [2019-11-20 07:51:14,933 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:51:14" (1/1) ... [2019-11-20 07:51:14,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 07:51:14,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 07:51:14,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 07:51:14,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 07:51:14,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:51:14" (1/1) ... [2019-11-20 07:51:14,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:51:14" (1/1) ... [2019-11-20 07:51:14,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:51:14" (1/1) ... [2019-11-20 07:51:14,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:51:14" (1/1) ... [2019-11-20 07:51:14,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:51:14" (1/1) ... [2019-11-20 07:51:14,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:51:14" (1/1) ... [2019-11-20 07:51:14,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:51:14" (1/1) ... [2019-11-20 07:51:14,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 07:51:14,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 07:51:14,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 07:51:14,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 07:51:14,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:51:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:15,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 07:51:15,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 07:51:15,226 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 07:51:15,226 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 07:51:15,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:51:15 BoogieIcfgContainer [2019-11-20 07:51:15,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 07:51:15,228 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 07:51:15,229 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 07:51:15,232 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 07:51:15,236 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 07:51:15,236 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 07:51:14" (1/3) ... [2019-11-20 07:51:15,237 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@71f593c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 07:51:15, skipping insertion in model container [2019-11-20 07:51:15,238 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 07:51:15,238 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:51:14" (2/3) ... [2019-11-20 07:51:15,239 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@71f593c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 07:51:15, skipping insertion in model container [2019-11-20 07:51:15,239 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 07:51:15,239 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:51:15" (3/3) ... [2019-11-20 07:51:15,242 INFO L371 chiAutomizerObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2019-11-20 07:51:15,300 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 07:51:15,300 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 07:51:15,300 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 07:51:15,300 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 07:51:15,300 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 07:51:15,300 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 07:51:15,301 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 07:51:15,301 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 07:51:15,317 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-11-20 07:51:15,356 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 07:51:15,356 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 07:51:15,356 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 07:51:15,363 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 07:51:15,364 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 07:51:15,364 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 07:51:15,364 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-11-20 07:51:15,365 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 07:51:15,366 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 07:51:15,366 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 07:51:15,366 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 07:51:15,366 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 07:51:15,374 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 4#L21true assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 10#L22-2true [2019-11-20 07:51:15,375 INFO L796 eck$LassoCheckResult]: Loop: 10#L22-2true assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 7#L24-2true assume !(main_~y~0 < main_~z~0); 5#L24-3true main_~y~0 := main_~x~0 + main_~y~0; 10#L22-2true [2019-11-20 07:51:15,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:15,382 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-11-20 07:51:15,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:51:15,392 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263614669] [2019-11-20 07:51:15,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:51:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:15,512 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 07:51:15,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:15,514 INFO L82 PathProgramCache]: Analyzing trace with hash 42930, now seen corresponding path program 1 times [2019-11-20 07:51:15,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:51:15,514 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868151956] [2019-11-20 07:51:15,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:51:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:15,530 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 07:51:15,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:15,532 INFO L82 PathProgramCache]: Analyzing trace with hash 29684975, now seen corresponding path program 1 times [2019-11-20 07:51:15,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:51:15,533 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70273216] [2019-11-20 07:51:15,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:51:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:15,554 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 07:51:15,612 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 07:51:15,612 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 07:51:15,613 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 07:51:15,613 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 07:51:15,613 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 07:51:15,613 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:15,613 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 07:51:15,614 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 07:51:15,614 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2019-11-20 07:51:15,614 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 07:51:15,614 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 07:51:15,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:15,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:15,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:15,786 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 07:51:15,787 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:15,794 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 07:51:15,794 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 07:51:15,802 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 07:51:15,802 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: [] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Exception during sending of exit command (exit): Stream Closed No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:15,810 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 07:51:15,810 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 07:51:15,822 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 07:51:15,822 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_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/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) [2019-11-20 07:51:15,835 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 07:51:15,835 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:15,854 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 07:51:15,854 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 07:51:18,088 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 07:51:18,090 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 07:51:18,090 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 07:51:18,090 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 07:51:18,090 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 07:51:18,091 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 07:51:18,091 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:18,091 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 07:51:18,091 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 07:51:18,091 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2019-11-20 07:51:18,091 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 07:51:18,091 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 07:51:18,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:18,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:18,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:18,221 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 07:51:18,224 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:18,234 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 07:51:18,236 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 07:51:18,236 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 07:51:18,236 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 07:51:18,236 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 07:51:18,244 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 07:51:18,244 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 07:51:18,256 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:18,267 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 07:51:18,268 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 07:51:18,269 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 07:51:18,269 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 07:51:18,269 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 07:51:18,273 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 07:51:18,273 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 07:51:18,278 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:18,302 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 07:51:18,304 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 07:51:18,304 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 07:51:18,305 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 07:51:18,305 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 07:51:18,305 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 07:51:18,307 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 07:51:18,307 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 07:51:18,311 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-20 07:51:18,313 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/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) [2019-11-20 07:51:18,330 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:18,332 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 07:51:18,332 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 07:51:18,332 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 07:51:18,333 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-20 07:51:18,337 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2019-11-20 07:51:18,338 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2019-11-20 07:51:18,344 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:18,350 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 07:51:18,352 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 07:51:18,352 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 07:51:18,352 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 07:51:18,353 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-20 07:51:18,363 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2019-11-20 07:51:18,363 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2019-11-20 07:51:18,371 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:18,386 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 07:51:18,388 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 07:51:18,389 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 07:51:18,389 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 07:51:18,389 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 07:51:18,389 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-20 07:51:18,392 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-20 07:51:18,392 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 07:51:18,398 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 07:51:18,434 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2019-11-20 07:51:18,434 INFO L444 ModelExtractionUtils]: 4 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 07:51:18,446 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 07:51:18,447 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 07:51:18,447 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 07:51:18,448 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-20 07:51:18,454 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:18,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:51:18,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 07:51:18,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:51:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:51:18,535 WARN L253 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 07:51:18,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:51:18,547 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:51:18,549 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:51:18,556 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:51:18,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:51:18,608 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 07:51:18,609 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 3 states. [2019-11-20 07:51:18,667 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 3 states. Result 34 states and 47 transitions. Complement of second has 8 states. [2019-11-20 07:51:18,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 07:51:18,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 07:51:18,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2019-11-20 07:51:18,672 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 2 letters. Loop has 3 letters. [2019-11-20 07:51:18,674 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 07:51:18,674 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-20 07:51:18,674 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 07:51:18,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 2 letters. Loop has 6 letters. [2019-11-20 07:51:18,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 07:51:18,676 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2019-11-20 07:51:18,680 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 07:51:18,684 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 10 states and 14 transitions. [2019-11-20 07:51:18,686 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-20 07:51:18,686 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-20 07:51:18,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2019-11-20 07:51:18,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 07:51:18,688 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-11-20 07:51:18,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2019-11-20 07:51:18,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-20 07:51:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-20 07:51:18,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2019-11-20 07:51:18,718 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-11-20 07:51:18,718 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-11-20 07:51:18,719 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 07:51:18,719 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 14 transitions. [2019-11-20 07:51:18,720 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 07:51:18,720 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 07:51:18,720 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 07:51:18,720 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-20 07:51:18,721 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-20 07:51:18,721 INFO L794 eck$LassoCheckResult]: Stem: 95#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 93#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 94#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 96#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 97#L24-2 [2019-11-20 07:51:18,721 INFO L796 eck$LassoCheckResult]: Loop: 97#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 97#L24-2 [2019-11-20 07:51:18,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:18,722 INFO L82 PathProgramCache]: Analyzing trace with hash 957581, now seen corresponding path program 1 times [2019-11-20 07:51:18,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:51:18,722 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585213475] [2019-11-20 07:51:18,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:51:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:18,739 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 07:51:18,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:18,740 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2019-11-20 07:51:18,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:51:18,740 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002443138] [2019-11-20 07:51:18,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:51:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:18,748 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 07:51:18,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:18,749 INFO L82 PathProgramCache]: Analyzing trace with hash 29685033, now seen corresponding path program 2 times [2019-11-20 07:51:18,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:51:18,750 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049114697] [2019-11-20 07:51:18,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:51:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:18,769 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 07:51:18,793 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 07:51:18,793 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 07:51:18,793 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 07:51:18,793 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 07:51:18,793 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 07:51:18,794 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:18,794 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 07:51:18,794 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 07:51:18,794 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2019-11-20 07:51:18,794 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 07:51:18,794 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 07:51:18,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:18,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:18,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:18,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:18,882 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 07:51:18,882 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 07:51:18,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 07:51:18,888 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:18,893 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 07:51:18,893 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_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 07:51:18,906 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 07:51:18,906 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:18,912 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 07:51:18,912 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/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) [2019-11-20 07:51:18,930 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 07:51:18,930 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/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) [2019-11-20 07:51:18,960 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 07:51:18,961 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 [2019-11-20 07:51:19,164 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 07:51:19,166 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 07:51:19,166 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 07:51:19,166 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 07:51:19,166 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 07:51:19,166 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 07:51:19,166 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:19,167 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 07:51:19,167 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 07:51:19,167 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2019-11-20 07:51:19,167 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 07:51:19,167 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 07:51:19,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:19,177 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:19,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:19,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:19,288 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 07:51:19,288 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/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) [2019-11-20 07:51:19,302 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 07:51:19,304 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 07:51:19,304 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 07:51:19,305 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 07:51:19,305 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 07:51:19,309 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 07:51:19,309 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:19,314 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/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) [2019-11-20 07:51:19,331 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 07:51:19,333 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 07:51:19,333 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 07:51:19,333 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 07:51:19,334 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 07:51:19,337 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 07:51:19,337 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:19,344 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:19,370 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 07:51:19,372 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 07:51:19,372 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 07:51:19,373 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 07:51:19,373 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 07:51:19,373 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 07:51:19,376 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 07:51:19,376 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 07:51:19,379 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 07:51:19,386 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-20 07:51:19,386 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/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) [2019-11-20 07:51:19,408 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 07:51:19,408 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 07:51:19,409 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 07:51:19,409 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2019-11-20 07:51:19,412 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:19,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:51:19,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 07:51:19,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:51:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:51:19,458 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 07:51:19,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:51:19,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:51:19,459 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 07:51:19,460 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 14 transitions. cyclomatic complexity: 6 Second operand 2 states. [2019-11-20 07:51:19,483 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 14 transitions. cyclomatic complexity: 6. Second operand 2 states. Result 17 states and 28 transitions. Complement of second has 6 states. [2019-11-20 07:51:19,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 07:51:19,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 07:51:19,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-11-20 07:51:19,486 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 1 letters. [2019-11-20 07:51:19,487 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 07:51:19,487 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 5 letters. Loop has 1 letters. [2019-11-20 07:51:19,487 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 07:51:19,487 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-20 07:51:19,487 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 07:51:19,488 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 28 transitions. [2019-11-20 07:51:19,489 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 07:51:19,490 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 13 states and 19 transitions. [2019-11-20 07:51:19,490 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-20 07:51:19,490 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-11-20 07:51:19,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2019-11-20 07:51:19,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 07:51:19,491 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2019-11-20 07:51:19,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2019-11-20 07:51:19,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-20 07:51:19,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-20 07:51:19,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2019-11-20 07:51:19,493 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-11-20 07:51:19,493 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-11-20 07:51:19,498 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 07:51:19,499 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2019-11-20 07:51:19,501 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 07:51:19,502 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 07:51:19,502 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 07:51:19,504 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-20 07:51:19,505 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 07:51:19,505 INFO L794 eck$LassoCheckResult]: Stem: 158#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 156#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 157#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 161#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 163#L24-2 assume !(main_~y~0 < main_~z~0); 152#L24-3 [2019-11-20 07:51:19,505 INFO L796 eck$LassoCheckResult]: Loop: 152#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 153#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 159#L24-2 assume !(main_~y~0 < main_~z~0); 152#L24-3 [2019-11-20 07:51:19,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:19,506 INFO L82 PathProgramCache]: Analyzing trace with hash 29685031, now seen corresponding path program 1 times [2019-11-20 07:51:19,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:51:19,507 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851723138] [2019-11-20 07:51:19,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:51:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:19,548 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 07:51:19,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:19,549 INFO L82 PathProgramCache]: Analyzing trace with hash 55200, now seen corresponding path program 2 times [2019-11-20 07:51:19,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:51:19,549 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830190846] [2019-11-20 07:51:19,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:51:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:19,560 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 07:51:19,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:19,561 INFO L82 PathProgramCache]: Analyzing trace with hash -416479046, now seen corresponding path program 1 times [2019-11-20 07:51:19,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:51:19,562 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677690182] [2019-11-20 07:51:19,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:51:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:19,578 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 07:51:19,602 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 07:51:19,602 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 07:51:19,602 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 07:51:19,602 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 07:51:19,603 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 07:51:19,603 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:19,603 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 07:51:19,603 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 07:51:19,603 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2019-11-20 07:51:19,603 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 07:51:19,604 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 07:51:19,605 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:19,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:19,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:19,712 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 07:51:19,712 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:19,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 07:51:19,722 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 07:51:19,730 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 07:51:19,730 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/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) [2019-11-20 07:51:19,742 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 07:51:19,742 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/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) [2019-11-20 07:51:19,754 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 07:51:19,755 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:22,048 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 07:51:22,051 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 07:51:22,051 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 07:51:22,051 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 07:51:22,051 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 07:51:22,051 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 07:51:22,052 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:22,052 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 07:51:22,052 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 07:51:22,052 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2019-11-20 07:51:22,052 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 07:51:22,052 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 07:51:22,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:22,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:22,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:22,157 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 07:51:22,157 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:22,161 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 07:51:22,163 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 07:51:22,163 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 07:51:22,163 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 07:51:22,164 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 07:51:22,164 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 07:51:22,167 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 07:51:22,168 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 07:51:22,171 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:22,193 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 07:51:22,199 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 07:51:22,199 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 07:51:22,200 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 07:51:22,200 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 07:51:22,202 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 07:51:22,202 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 07:51:22,206 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/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) [2019-11-20 07:51:22,218 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 07:51:22,220 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 07:51:22,220 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 07:51:22,221 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 07:51:22,221 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 07:51:22,223 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 07:51:22,223 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:22,228 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-20 07:51:22,230 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/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) [2019-11-20 07:51:22,235 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 07:51:22,238 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 07:51:22,238 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 07:51:22,239 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 07:51:22,239 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 07:51:22,239 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-20 07:51:22,241 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-20 07:51:22,242 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:22,248 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 07:51:22,260 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2019-11-20 07:51:22,260 INFO L444 ModelExtractionUtils]: 2 out of 9 variables were initially zero. Simplification set additionally 3 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/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) [2019-11-20 07:51:22,265 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 07:51:22,265 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 07:51:22,265 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 07:51:22,265 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-20 07:51:22,277 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:22,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:51:22,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 07:51:22,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:51:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:51:22,333 WARN L253 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 07:51:22,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:51:22,336 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:51:22,418 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:51:22,419 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:51:22,424 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:51:22,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:51:22,499 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 07:51:22,499 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9 Second operand 4 states. [2019-11-20 07:51:22,549 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 30 states and 45 transitions. Complement of second has 8 states. [2019-11-20 07:51:22,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 07:51:22,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 07:51:22,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2019-11-20 07:51:22,552 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-20 07:51:22,552 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 07:51:22,552 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-20 07:51:22,552 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 07:51:22,553 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 5 letters. Loop has 6 letters. [2019-11-20 07:51:22,553 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 07:51:22,553 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 45 transitions. [2019-11-20 07:51:22,555 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 07:51:22,556 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 22 states and 33 transitions. [2019-11-20 07:51:22,556 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-20 07:51:22,556 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-20 07:51:22,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 33 transitions. [2019-11-20 07:51:22,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 07:51:22,557 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 33 transitions. [2019-11-20 07:51:22,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 33 transitions. [2019-11-20 07:51:22,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2019-11-20 07:51:22,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-20 07:51:22,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2019-11-20 07:51:22,568 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-11-20 07:51:22,568 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-11-20 07:51:22,569 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 07:51:22,569 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2019-11-20 07:51:22,573 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 07:51:22,573 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 07:51:22,573 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 07:51:22,574 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2019-11-20 07:51:22,574 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-20 07:51:22,574 INFO L794 eck$LassoCheckResult]: Stem: 252#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 250#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 251#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 263#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 261#L24-2 assume !(main_~y~0 < main_~z~0); 247#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 248#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 259#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 258#L24-2 [2019-11-20 07:51:22,575 INFO L796 eck$LassoCheckResult]: Loop: 258#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 258#L24-2 [2019-11-20 07:51:22,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:22,575 INFO L82 PathProgramCache]: Analyzing trace with hash -416479044, now seen corresponding path program 2 times [2019-11-20 07:51:22,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:51:22,579 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163199221] [2019-11-20 07:51:22,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:51:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:22,614 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 07:51:22,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:22,614 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 2 times [2019-11-20 07:51:22,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:51:22,615 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811467801] [2019-11-20 07:51:22,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:51:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:22,628 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 07:51:22,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:22,628 INFO L82 PathProgramCache]: Analyzing trace with hash -25948454, now seen corresponding path program 3 times [2019-11-20 07:51:22,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:51:22,629 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430367115] [2019-11-20 07:51:22,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:51:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:22,670 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 07:51:22,689 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 07:51:22,689 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 07:51:22,689 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 07:51:22,689 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 07:51:22,689 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 07:51:22,689 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:22,690 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 07:51:22,690 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 07:51:22,690 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2019-11-20 07:51:22,690 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 07:51:22,690 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 07:51:22,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:22,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:22,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:22,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:22,776 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 07:51:22,776 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:22,780 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 07:51:22,780 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 07:51:22,784 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 07:51:22,784 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:22,789 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 07:51:22,789 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:22,797 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 07:51:22,797 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 07:51:22,990 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 07:51:22,992 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 07:51:22,992 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 07:51:22,992 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 07:51:22,992 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 07:51:22,992 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 07:51:22,992 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:22,992 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 07:51:22,992 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 07:51:22,993 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2019-11-20 07:51:22,993 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 07:51:22,993 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 07:51:22,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:23,000 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:23,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:23,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:23,075 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 07:51:23,075 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:23,085 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 07:51:23,086 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 07:51:23,086 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 07:51:23,087 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 07:51:23,087 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 07:51:23,087 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 07:51:23,088 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 07:51:23,088 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 07:51:23,090 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 07:51:23,092 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 07:51:23,093 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:23,096 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 07:51:23,096 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 07:51:23,096 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 07:51:23,096 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~z~0 - 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-20 07:51:23,098 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 07:51:23,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:51:23,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 07:51:23,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:51:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:51:23,134 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 07:51:23,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:51:23,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:51:23,135 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 07:51:23,135 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-11-20 07:51:23,149 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 21 states and 30 transitions. Complement of second has 5 states. [2019-11-20 07:51:23,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 07:51:23,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 07:51:23,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-11-20 07:51:23,151 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2019-11-20 07:51:23,151 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 07:51:23,152 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 07:51:23,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:51:23,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 07:51:23,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:51:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:51:23,187 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 07:51:23,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:51:23,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:51:23,188 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 07:51:23,189 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-11-20 07:51:23,200 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 21 states and 30 transitions. Complement of second has 5 states. [2019-11-20 07:51:23,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 07:51:23,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 07:51:23,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-11-20 07:51:23,202 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2019-11-20 07:51:23,202 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 07:51:23,202 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 07:51:23,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:51:23,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 07:51:23,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:51:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:51:23,227 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 07:51:23,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:51:23,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:51:23,228 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 07:51:23,228 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-11-20 07:51:23,244 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 29 states and 45 transitions. Complement of second has 5 states. [2019-11-20 07:51:23,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 07:51:23,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 07:51:23,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-11-20 07:51:23,245 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 1 letters. [2019-11-20 07:51:23,245 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 07:51:23,245 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 1 letters. [2019-11-20 07:51:23,246 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 07:51:23,246 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-20 07:51:23,246 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 07:51:23,246 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 45 transitions. [2019-11-20 07:51:23,248 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-20 07:51:23,249 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 22 states and 31 transitions. [2019-11-20 07:51:23,249 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-20 07:51:23,249 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-20 07:51:23,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 31 transitions. [2019-11-20 07:51:23,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 07:51:23,250 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 31 transitions. [2019-11-20 07:51:23,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 31 transitions. [2019-11-20 07:51:23,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2019-11-20 07:51:23,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-20 07:51:23,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2019-11-20 07:51:23,252 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-11-20 07:51:23,252 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-11-20 07:51:23,252 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-20 07:51:23,253 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2019-11-20 07:51:23,253 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-20 07:51:23,253 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 07:51:23,253 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 07:51:23,254 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2019-11-20 07:51:23,254 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 07:51:23,254 INFO L794 eck$LassoCheckResult]: Stem: 453#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 451#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 452#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 456#L24-2 assume !(main_~y~0 < main_~z~0); 449#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 450#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 454#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 455#L24-2 assume !(main_~y~0 < main_~z~0); 447#L24-3 [2019-11-20 07:51:23,254 INFO L796 eck$LassoCheckResult]: Loop: 447#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 448#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 459#L24-2 assume !(main_~y~0 < main_~z~0); 447#L24-3 [2019-11-20 07:51:23,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:23,255 INFO L82 PathProgramCache]: Analyzing trace with hash -418159556, now seen corresponding path program 4 times [2019-11-20 07:51:23,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:51:23,255 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045950718] [2019-11-20 07:51:23,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:51:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:23,270 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 07:51:23,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:23,270 INFO L82 PathProgramCache]: Analyzing trace with hash 55200, now seen corresponding path program 3 times [2019-11-20 07:51:23,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:51:23,271 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325559864] [2019-11-20 07:51:23,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:51:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:23,277 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 07:51:23,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:23,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1986148987, now seen corresponding path program 5 times [2019-11-20 07:51:23,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:51:23,278 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443199432] [2019-11-20 07:51:23,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:51:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:51:23,381 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:51:23,381 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443199432] [2019-11-20 07:51:23,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247300557] [2019-11-20 07:51:23,382 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 07:51:23,422 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2019-11-20 07:51:23,423 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 07:51:23,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 07:51:23,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:51:23,462 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:51:23,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 07:51:23,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-11-20 07:51:23,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599193170] [2019-11-20 07:51:23,484 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 07:51:23,484 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 07:51:23,484 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 07:51:23,484 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 07:51:23,485 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 07:51:23,485 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:23,485 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 07:51:23,485 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 07:51:23,485 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2019-11-20 07:51:23,485 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 07:51:23,485 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 07:51:23,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:23,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:23,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:23,551 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 07:51:23,552 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 07:51:23,562 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 07:51:23,563 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:23,568 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 07:51:23,568 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:23,574 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 07:51:23,574 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 07:51:23,578 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 07:51:23,579 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:23,587 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 07:51:23,587 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:23,596 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 07:51:23,596 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 07:51:25,802 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 07:51:25,804 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 07:51:25,804 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 07:51:25,804 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 07:51:25,804 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 07:51:25,804 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 07:51:25,804 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:25,804 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 07:51:25,805 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 07:51:25,805 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2019-11-20 07:51:25,805 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 07:51:25,805 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 07:51:25,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:25,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:25,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:25,859 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 07:51:25,860 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:25,863 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 07:51:25,864 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 07:51:25,865 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 07:51:25,865 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 07:51:25,865 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 07:51:25,866 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 07:51:25,866 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 07:51:25,869 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:25,876 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 07:51:25,877 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 07:51:25,878 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 07:51:25,878 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 07:51:25,878 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 07:51:25,879 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 07:51:25,879 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 07:51:25,882 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:25,889 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 07:51:25,890 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 07:51:25,890 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 07:51:25,890 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 07:51:25,890 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 07:51:25,890 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 07:51:25,892 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 07:51:25,892 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 07:51:25,897 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-20 07:51:25,899 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:25,914 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 07:51:25,915 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 07:51:25,915 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 07:51:25,915 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 07:51:25,915 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-20 07:51:25,917 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2019-11-20 07:51:25,917 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2019-11-20 07:51:25,920 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:25,925 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 07:51:25,926 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 07:51:25,926 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 07:51:25,927 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 07:51:25,927 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-20 07:51:25,929 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2019-11-20 07:51:25,929 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2019-11-20 07:51:25,934 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 07:51:25,946 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 07:51:25,948 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 07:51:25,948 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 07:51:25,948 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 07:51:25,949 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 07:51:25,949 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-20 07:51:25,950 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-20 07:51:25,951 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:25,957 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 07:51:25,966 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-20 07:51:25,966 INFO L444 ModelExtractionUtils]: 2 out of 9 variables were initially zero. Simplification set additionally 3 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 07:51:25,973 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 07:51:25,974 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 07:51:25,974 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 07:51:25,974 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~x~0 + 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-20 07:51:25,976 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:26,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:51:26,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 07:51:26,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:51:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:51:26,048 WARN L253 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 07:51:26,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:51:26,049 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:51:26,100 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:51:26,101 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:51:26,102 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:51:26,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:51:26,167 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 07:51:26,167 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-11-20 07:51:26,193 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 26 states and 37 transitions. Complement of second has 7 states. [2019-11-20 07:51:26,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 07:51:26,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 07:51:26,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2019-11-20 07:51:26,195 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-20 07:51:26,195 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 07:51:26,195 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 07:51:26,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:51:26,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 07:51:26,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:51:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:51:26,222 WARN L253 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 07:51:26,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:51:26,223 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:51:26,267 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:51:26,268 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:51:26,269 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:51:26,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:51:26,311 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 07:51:26,311 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-11-20 07:51:26,337 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 24 states and 32 transitions. Complement of second has 7 states. [2019-11-20 07:51:26,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 07:51:26,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 07:51:26,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-11-20 07:51:26,339 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-20 07:51:26,339 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 07:51:26,339 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 07:51:26,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:51:26,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 07:51:26,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:51:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:51:26,362 WARN L253 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 07:51:26,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:51:26,363 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:51:26,403 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:51:26,404 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:51:26,405 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:51:26,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:51:26,450 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 07:51:26,450 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-11-20 07:51:26,477 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 31 states and 43 transitions. Complement of second has 6 states. [2019-11-20 07:51:26,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 07:51:26,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 07:51:26,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-20 07:51:26,481 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-20 07:51:26,482 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 07:51:26,482 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 11 letters. Loop has 3 letters. [2019-11-20 07:51:26,482 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 07:51:26,482 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 6 letters. [2019-11-20 07:51:26,482 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 07:51:26,483 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 43 transitions. [2019-11-20 07:51:26,484 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-20 07:51:26,484 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 24 states and 34 transitions. [2019-11-20 07:51:26,484 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-20 07:51:26,484 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-20 07:51:26,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 34 transitions. [2019-11-20 07:51:26,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 07:51:26,485 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2019-11-20 07:51:26,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 34 transitions. [2019-11-20 07:51:26,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2019-11-20 07:51:26,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-20 07:51:26,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2019-11-20 07:51:26,487 INFO L711 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2019-11-20 07:51:26,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 07:51:26,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 07:51:26,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-20 07:51:26,490 INFO L87 Difference]: Start difference. First operand 19 states and 27 transitions. Second operand 8 states. [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Exception during sending of exit command (exit): Broken pipe [2019-11-20 07:51:26,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:51:26,625 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2019-11-20 07:51:26,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 07:51:26,626 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 28 transitions. [2019-11-20 07:51:26,627 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 07:51:26,627 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 21 states and 28 transitions. [2019-11-20 07:51:26,627 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-20 07:51:26,627 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-20 07:51:26,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 28 transitions. [2019-11-20 07:51:26,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 07:51:26,628 INFO L688 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2019-11-20 07:51:26,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 28 transitions. [2019-11-20 07:51:26,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2019-11-20 07:51:26,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-20 07:51:26,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2019-11-20 07:51:26,630 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2019-11-20 07:51:26,630 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2019-11-20 07:51:26,630 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-20 07:51:26,630 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 25 transitions. [2019-11-20 07:51:26,630 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 07:51:26,631 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 07:51:26,631 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 07:51:26,631 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2019-11-20 07:51:26,631 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-20 07:51:26,631 INFO L794 eck$LassoCheckResult]: Stem: 784#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 782#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 783#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 787#L24-2 assume !(main_~y~0 < main_~z~0); 795#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 794#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 793#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 791#L24-2 assume !(main_~y~0 < main_~z~0); 778#L24-3 [2019-11-20 07:51:26,631 INFO L796 eck$LassoCheckResult]: Loop: 778#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 779#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 789#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 791#L24-2 assume !(main_~y~0 < main_~z~0); 778#L24-3 [2019-11-20 07:51:26,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:26,632 INFO L82 PathProgramCache]: Analyzing trace with hash -418159556, now seen corresponding path program 6 times [2019-11-20 07:51:26,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:51:26,632 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655851678] [2019-11-20 07:51:26,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:51:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:26,643 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 07:51:26,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:26,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1711282, now seen corresponding path program 1 times [2019-11-20 07:51:26,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:51:26,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102104245] [2019-11-20 07:51:26,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:51:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:26,650 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 07:51:26,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:26,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1441076371, now seen corresponding path program 7 times [2019-11-20 07:51:26,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:51:26,650 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723368529] [2019-11-20 07:51:26,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:51:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:51:26,666 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 07:51:26,692 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 07:51:26,692 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 07:51:26,692 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 07:51:26,692 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 07:51:26,692 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 07:51:26,692 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:26,692 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 07:51:26,692 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 07:51:26,692 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2019-11-20 07:51:26,692 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 07:51:26,692 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 07:51:26,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:26,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:26,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:26,815 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 07:51:26,816 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:26,821 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 07:51:26,821 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 07:51:26,825 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 07:51:26,825 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_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:26,831 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 07:51:26,831 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 07:51:26,835 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 07:51:26,835 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_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:26,840 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 07:51:26,841 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:26,851 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 07:51:26,851 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 07:51:27,582 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 07:51:27,584 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 07:51:27,584 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 07:51:27,584 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 07:51:27,584 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 07:51:27,584 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 07:51:27,584 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:27,585 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 07:51:27,585 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 07:51:27,585 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2019-11-20 07:51:27,585 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 07:51:27,585 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 07:51:27,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:27,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:27,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 07:51:27,670 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 07:51:27,670 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:27,674 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 07:51:27,676 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 07:51:27,676 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 07:51:27,676 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 07:51:27,676 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 07:51:27,677 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 07:51:27,677 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 07:51:27,681 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:27,686 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 07:51:27,687 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 07:51:27,688 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 07:51:27,688 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 07:51:27,688 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 07:51:27,689 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 07:51:27,689 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 07:51:27,692 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:27,703 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 07:51:27,705 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 07:51:27,706 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 07:51:27,706 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 07:51:27,706 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 07:51:27,706 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 07:51:27,708 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 07:51:27,708 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 07:51:27,713 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 07:51:27,719 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 07:51:27,719 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_39a0ddb8-0b04-42ec-9f78-7bca4f01e9f5/bin/uautomizer/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 07:51:27,725 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 07:51:27,725 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 07:51:27,725 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 07:51:27,725 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2019-11-20 07:51:27,727 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 07:51:27,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:51:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:51:27,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 07:51:27,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:51:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:51:27,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 07:51:27,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:51:27,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:51:27,794 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 07:51:27,794 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 11 Second operand 5 states. [2019-11-20 07:51:27,815 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 11. Second operand 5 states. Result 35 states and 50 transitions. Complement of second has 6 states. [2019-11-20 07:51:27,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 07:51:27,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 07:51:27,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-20 07:51:27,818 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2019-11-20 07:51:27,818 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 07:51:27,818 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 4 letters. [2019-11-20 07:51:27,818 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 07:51:27,818 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 8 letters. [2019-11-20 07:51:27,819 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 07:51:27,819 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2019-11-20 07:51:27,820 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 07:51:27,820 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 0 states and 0 transitions. [2019-11-20 07:51:27,820 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 07:51:27,820 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 07:51:27,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 07:51:27,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 07:51:27,820 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 07:51:27,820 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 07:51:27,820 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 07:51:27,821 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-20 07:51:27,821 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 07:51:27,821 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 07:51:27,821 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 07:51:27,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 07:51:27 BoogieIcfgContainer [2019-11-20 07:51:27,827 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 07:51:27,827 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 07:51:27,827 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 07:51:27,828 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 07:51:27,828 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:51:15" (3/4) ... [2019-11-20 07:51:27,832 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 07:51:27,832 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 07:51:27,834 INFO L168 Benchmark]: Toolchain (without parser) took 13334.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 177.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -148.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. [2019-11-20 07:51:27,835 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 07:51:27,835 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -202.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-20 07:51:27,836 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 07:51:27,836 INFO L168 Benchmark]: Boogie Preprocessor took 17.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 07:51:27,836 INFO L168 Benchmark]: RCFGBuilder took 256.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2019-11-20 07:51:27,837 INFO L168 Benchmark]: BuchiAutomizer took 12598.57 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 28.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.8 MB). Peak memory consumption was 61.1 MB. Max. memory is 11.5 GB. [2019-11-20 07:51:27,837 INFO L168 Benchmark]: Witness Printer took 4.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 07:51:27,840 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 412.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -202.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 256.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 12598.57 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 28.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.8 MB). Peak memory consumption was 61.1 MB. Max. memory is 11.5 GB. * Witness Printer took 4.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else y) and consists of 5 locations. One deterministic module has affine ranking function -1 * y + z and consists of 4 locations. One deterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else y + x) and consists of 5 locations. One deterministic module has affine ranking function z and consists of 4 locations. One nondeterministic module has affine ranking function z + -1 * y and consists of 4 locations. One nondeterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else x + y) and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 12.5s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 10.9s. Construction of modules took 0.1s. Büchi inclusion checks took 1.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 18 states and ocurred in iteration 3. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/1 HoareTripleCheckerStatistics: 66 SDtfs, 68 SDslu, 8 SDs, 0 SdLazy, 143 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax166 hnf97 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf93 smp97 dnf100 smp100 tf109 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 29ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 8.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...