./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_232c8b27-10d8-4952-a4b4-ced1f4499c90/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 222b9e0025989dbea1cdc61cba66ae29f96b0141 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 18:04:46,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:04:46,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:04:46,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:04:46,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:04:46,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:04:46,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:04:46,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:04:46,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:04:46,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:04:46,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:04:46,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:04:46,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:04:46,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:04:46,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:04:46,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:04:46,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:04:46,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:04:46,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:04:46,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:04:46,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:04:46,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:04:46,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:04:46,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:04:46,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:04:46,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:04:46,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:04:46,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:04:46,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:04:46,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:04:46,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:04:46,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:04:46,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:04:46,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:04:46,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:04:46,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:04:46,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:04:46,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:04:46,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:04:46,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:04:46,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:04:46,584 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 18:04:46,595 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:04:46,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:04:46,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:04:46,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:04:46,596 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:04:46,596 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 18:04:46,596 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 18:04:46,596 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 18:04:46,596 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 18:04:46,596 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 18:04:46,597 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 18:04:46,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:04:46,597 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 18:04:46,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:04:46,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:04:46,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 18:04:46,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 18:04:46,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 18:04:46,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:04:46,598 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 18:04:46,598 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:04:46,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 18:04:46,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:04:46,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:04:46,598 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 18:04:46,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:04:46,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:04:46,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:04:46,599 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 18:04:46,599 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 18:04:46,599 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_232c8b27-10d8-4952-a4b4-ced1f4499c90/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 -> 222b9e0025989dbea1cdc61cba66ae29f96b0141 [2019-12-07 18:04:46,698 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:04:46,706 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:04:46,709 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:04:46,710 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:04:46,710 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:04:46,711 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c [2019-12-07 18:04:46,750 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/data/633e5a719/ce30f8d7d49742fe9ddc07792a1e52a8/FLAG9bd9da1bc [2019-12-07 18:04:47,081 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:04:47,081 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_232c8b27-10d8-4952-a4b4-ced1f4499c90/sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c [2019-12-07 18:04:47,085 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/data/633e5a719/ce30f8d7d49742fe9ddc07792a1e52a8/FLAG9bd9da1bc [2019-12-07 18:04:47,094 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/data/633e5a719/ce30f8d7d49742fe9ddc07792a1e52a8 [2019-12-07 18:04:47,096 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:04:47,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:04:47,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:04:47,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:04:47,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:04:47,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:04:47" (1/1) ... [2019-12-07 18:04:47,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e36ea05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:04:47, skipping insertion in model container [2019-12-07 18:04:47,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:04:47" (1/1) ... [2019-12-07 18:04:47,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:04:47,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:04:47,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:04:47,231 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:04:47,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:04:47,291 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:04:47,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:04:47 WrapperNode [2019-12-07 18:04:47,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:04:47,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:04:47,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:04:47,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:04:47,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:04:47" (1/1) ... [2019-12-07 18:04:47,302 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:04:47" (1/1) ... [2019-12-07 18:04:47,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:04:47,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:04:47,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:04:47,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:04:47,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:04:47" (1/1) ... [2019-12-07 18:04:47,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:04:47" (1/1) ... [2019-12-07 18:04:47,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:04:47" (1/1) ... [2019-12-07 18:04:47,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:04:47" (1/1) ... [2019-12-07 18:04:47,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:04:47" (1/1) ... [2019-12-07 18:04:47,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:04:47" (1/1) ... [2019-12-07 18:04:47,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:04:47" (1/1) ... [2019-12-07 18:04:47,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:04:47,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:04:47,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:04:47,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:04:47,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:04:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:04:47,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:04:47,458 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:04:47,458 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 18:04:47,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:04:47 BoogieIcfgContainer [2019-12-07 18:04:47,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:04:47,460 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 18:04:47,460 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 18:04:47,462 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 18:04:47,462 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:04:47,462 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 06:04:47" (1/3) ... [2019-12-07 18:04:47,463 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c2b9116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:04:47, skipping insertion in model container [2019-12-07 18:04:47,463 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:04:47,463 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:04:47" (2/3) ... [2019-12-07 18:04:47,463 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c2b9116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:04:47, skipping insertion in model container [2019-12-07 18:04:47,463 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:04:47,463 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:04:47" (3/3) ... [2019-12-07 18:04:47,464 INFO L371 chiAutomizerObserver]: Analyzing ICFG Avery-FLOPS2006-Table1.c [2019-12-07 18:04:47,494 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 18:04:47,494 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 18:04:47,494 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 18:04:47,494 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:04:47,494 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:04:47,494 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 18:04:47,494 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:04:47,494 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 18:04:47,503 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 18:04:47,515 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2019-12-07 18:04:47,515 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:04:47,515 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:04:47,519 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 18:04:47,519 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 18:04:47,519 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 18:04:47,520 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 18:04:47,520 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2019-12-07 18:04:47,520 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:04:47,520 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:04:47,521 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 18:04:47,521 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 18:04:47,525 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~z~0, main_~i~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;havoc main_~i~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := 0;main_~i~0 := main_~x~0; 10#L20true assume main_~y~0 > 0 && main_~x~0 > 0; 6#L21-2true [2019-12-07 18:04:47,526 INFO L796 eck$LassoCheckResult]: Loop: 6#L21-2true assume !!(main_~i~0 > 0);main_~i~0 := main_~i~0 - 1;main_~z~0 := 1 + main_~z~0; 6#L21-2true [2019-12-07 18:04:47,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:47,529 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-12-07 18:04:47,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:47,535 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748592001] [2019-12-07 18:04:47,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:47,604 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:04:47,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:47,605 INFO L82 PathProgramCache]: Analyzing trace with hash 44, now seen corresponding path program 1 times [2019-12-07 18:04:47,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:47,606 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951557063] [2019-12-07 18:04:47,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:47,613 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:04:47,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:47,614 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2019-12-07 18:04:47,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:47,614 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866705754] [2019-12-07 18:04:47,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:47,625 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:04:47,654 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:04:47,654 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:04:47,655 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:04:47,655 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:04:47,655 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:04:47,655 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:47,655 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:04:47,655 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:04:47,655 INFO L133 ssoRankerPreferences]: Filename of dumped script: Avery-FLOPS2006-Table1.c_Iteration1_Loop [2019-12-07 18:04:47,655 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:04:47,656 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:04:47,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:47,676 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:47,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:47,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:47,745 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:04:47,745 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:47,750 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:04:47,750 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:04:47,758 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:04:47,758 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:47,762 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:04:47,762 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:04:47,765 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:04:47,765 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_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:47,769 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:04:47,769 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:47,776 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:04:47,776 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:04:47,783 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:04:47,784 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:04:47,784 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:04:47,784 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:04:47,784 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:04:47,784 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:04:47,785 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:47,785 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:04:47,785 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:04:47,785 INFO L133 ssoRankerPreferences]: Filename of dumped script: Avery-FLOPS2006-Table1.c_Iteration1_Loop [2019-12-07 18:04:47,785 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:04:47,785 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:04:47,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:47,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:47,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:47,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:47,839 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:04:47,842 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:47,846 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:04:47,848 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:04:47,848 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:04:47,849 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:04:47,849 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:04:47,854 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:04:47,854 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:04:47,859 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:47,863 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 [2019-12-07 18:04:47,864 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:04:47,865 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:04:47,865 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:04:47,865 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:04:47,865 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:04:47,866 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:04:47,866 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:04:47,868 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:04:47,871 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 18:04:47,871 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:47,875 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:04:47,875 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:04:47,875 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:04:47,875 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 18:04:47,878 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:04:47,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:47,904 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:04:47,904 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:47,912 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:04:47,912 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:47,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:04:47,923 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 18:04:47,924 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 2 states. [2019-12-07 18:04:47,955 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 2 states. Result 28 states and 36 transitions. Complement of second has 6 states. [2019-12-07 18:04:47,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 18:04:47,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 18:04:47,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2019-12-07 18:04:47,959 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 2 letters. Loop has 1 letters. [2019-12-07 18:04:47,960 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:47,961 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 3 letters. Loop has 1 letters. [2019-12-07 18:04:47,961 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:47,961 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 2 letters. Loop has 2 letters. [2019-12-07 18:04:47,961 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:47,962 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 36 transitions. [2019-12-07 18:04:47,965 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 18:04:47,968 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 6 states and 8 transitions. [2019-12-07 18:04:47,969 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-12-07 18:04:47,969 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-12-07 18:04:47,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 8 transitions. [2019-12-07 18:04:47,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:04:47,970 INFO L688 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-12-07 18:04:47,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 8 transitions. [2019-12-07 18:04:47,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 5. [2019-12-07 18:04:47,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 18:04:47,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2019-12-07 18:04:47,992 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-12-07 18:04:47,992 INFO L591 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-12-07 18:04:47,992 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 18:04:47,992 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2019-12-07 18:04:47,992 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 18:04:47,992 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:04:47,992 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:04:47,992 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 18:04:47,992 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 18:04:47,993 INFO L794 eck$LassoCheckResult]: Stem: 69#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~z~0, main_~i~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;havoc main_~i~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := 0;main_~i~0 := main_~x~0; 70#L20 assume main_~y~0 > 0 && main_~x~0 > 0; 72#L21-2 assume !(main_~i~0 > 0); 71#L25-1 [2019-12-07 18:04:47,993 INFO L796 eck$LassoCheckResult]: Loop: 71#L25-1 assume !!(main_~i~0 < main_~y~0);main_~i~0 := 1 + main_~i~0;main_~z~0 := main_~z~0 - 1; 71#L25-1 [2019-12-07 18:04:47,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:47,993 INFO L82 PathProgramCache]: Analyzing trace with hash 30887, now seen corresponding path program 1 times [2019-12-07 18:04:47,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:47,993 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789018083] [2019-12-07 18:04:47,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:48,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:04:48,020 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789018083] [2019-12-07 18:04:48,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:04:48,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 18:04:48,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091007646] [2019-12-07 18:04:48,023 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 18:04:48,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:48,024 INFO L82 PathProgramCache]: Analyzing trace with hash 55, now seen corresponding path program 1 times [2019-12-07 18:04:48,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:04:48,024 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997498982] [2019-12-07 18:04:48,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:04:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:04:48,029 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:04:48,039 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:04:48,039 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:04:48,039 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:04:48,039 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:04:48,040 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:04:48,040 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:48,040 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:04:48,040 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:04:48,040 INFO L133 ssoRankerPreferences]: Filename of dumped script: Avery-FLOPS2006-Table1.c_Iteration2_Loop [2019-12-07 18:04:48,040 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:04:48,040 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:04:48,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:48,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:48,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:48,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:48,081 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:04:48,081 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:48,084 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:04:48,084 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:04:48,087 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:04:48,087 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_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:48,091 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:04:48,091 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:04:48,094 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:04:48,094 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_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:48,098 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:04:48,098 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:48,104 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:04:48,104 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:04:48,240 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:04:48,241 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:04:48,241 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:04:48,241 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:04:48,241 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:04:48,241 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:04:48,241 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:48,242 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:04:48,242 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:04:48,242 INFO L133 ssoRankerPreferences]: Filename of dumped script: Avery-FLOPS2006-Table1.c_Iteration2_Loop [2019-12-07 18:04:48,242 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:04:48,242 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:04:48,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:48,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:48,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:48,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:04:48,285 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:04:48,285 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:48,288 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:04:48,289 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:04:48,290 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:04:48,290 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:04:48,290 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:04:48,292 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:04:48,292 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:04:48,295 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:48,300 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:04:48,301 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:04:48,301 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:04:48,301 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:04:48,301 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:04:48,303 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:04:48,304 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:04:48,306 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:48,310 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:04:48,312 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:04:48,312 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:04:48,312 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:04:48,312 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:04:48,312 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:04:48,313 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:04:48,313 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:04:48,316 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:04:48,318 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 18:04:48,319 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_232c8b27-10d8-4952-a4b4-ced1f4499c90/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:04:48,325 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:04:48,325 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:04:48,325 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:04:48,325 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~y~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-12-07 18:04:48,326 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:04:48,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:04:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:48,346 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:04:48,346 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:04:48,350 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:04:48,351 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:04:48,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:04:48,351 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 18:04:48,351 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-12-07 18:04:48,355 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 6 states and 8 transitions. Complement of second has 2 states. [2019-12-07 18:04:48,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-12-07 18:04:48,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 18:04:48,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 5 transitions. [2019-12-07 18:04:48,356 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2019-12-07 18:04:48,356 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:48,356 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 5 transitions. Stem has 4 letters. Loop has 1 letters. [2019-12-07 18:04:48,356 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:48,356 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 5 transitions. Stem has 3 letters. Loop has 2 letters. [2019-12-07 18:04:48,356 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:04:48,357 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 8 transitions. [2019-12-07 18:04:48,357 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:04:48,357 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 0 states and 0 transitions. [2019-12-07 18:04:48,357 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 18:04:48,357 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 18:04:48,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 18:04:48,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:04:48,358 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:04:48,358 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:04:48,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:04:48,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:04:48,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:04:48,361 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2019-12-07 18:04:48,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:04:48,364 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-12-07 18:04:48,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 18:04:48,364 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-12-07 18:04:48,364 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:04:48,364 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 18:04:48,364 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 18:04:48,364 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 18:04:48,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 18:04:48,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:04:48,365 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:04:48,365 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:04:48,365 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:04:48,365 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 18:04:48,365 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 18:04:48,365 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:04:48,365 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 18:04:48,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 06:04:48 BoogieIcfgContainer [2019-12-07 18:04:48,371 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 18:04:48,371 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:04:48,371 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:04:48,371 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:04:48,372 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:04:47" (3/4) ... [2019-12-07 18:04:48,374 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 18:04:48,374 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:04:48,377 INFO L168 Benchmark]: Toolchain (without parser) took 1278.64 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 945.1 MB in the beginning and 924.6 MB in the end (delta: 20.5 MB). Peak memory consumption was 119.6 MB. Max. memory is 11.5 GB. [2019-12-07 18:04:48,377 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:04:48,378 INFO L168 Benchmark]: CACSL2BoogieTranslator took 194.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -150.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-12-07 18:04:48,378 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.94 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:04:48,378 INFO L168 Benchmark]: Boogie Preprocessor took 12.03 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:04:48,379 INFO L168 Benchmark]: RCFGBuilder took 133.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-12-07 18:04:48,380 INFO L168 Benchmark]: BuchiAutomizer took 911.10 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 924.6 MB in the end (delta: 151.8 MB). Peak memory consumption was 151.8 MB. Max. memory is 11.5 GB. [2019-12-07 18:04:48,380 INFO L168 Benchmark]: Witness Printer took 3.64 ms. Allocated memory is still 1.1 GB. Free memory is still 924.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:04:48,382 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 194.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -150.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.94 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.03 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 133.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 911.10 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 924.6 MB in the end (delta: 151.8 MB). Peak memory consumption was 151.8 MB. Max. memory is 11.5 GB. * Witness Printer took 3.64 ms. Allocated memory is still 1.1 GB. Free memory is still 924.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -1 * i + y and consists of 2 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.8s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 5 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 13 SDtfs, 13 SDslu, 3 SDs, 0 SdLazy, 9 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax179 hnf100 lsp37 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...