./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.18.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_2ada05c6-694b-43ed-886d-b6938a61e0ac/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2ada05c6-694b-43ed-886d-b6938a61e0ac/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2ada05c6-694b-43ed-886d-b6938a61e0ac/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2ada05c6-694b-43ed-886d-b6938a61e0ac/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.18.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2ada05c6-694b-43ed-886d-b6938a61e0ac/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2ada05c6-694b-43ed-886d-b6938a61e0ac/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 bd4093f0fb25d9d8e9de7e7010b28ffecefa6ef0 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 13:01:02,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:01:02,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:01:02,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:01:02,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:01:02,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:01:02,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:01:02,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:01:02,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:01:02,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:01:02,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:01:02,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:01:02,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:01:02,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:01:02,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:01:02,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:01:02,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:01:02,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:01:02,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:01:02,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:01:02,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:01:02,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:01:02,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:01:02,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:01:02,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:01:02,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:01:02,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:01:02,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:01:02,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:01:02,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:01:02,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:01:02,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:01:02,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:01:02,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:01:02,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:01:02,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:01:02,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:01:02,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:01:02,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:01:02,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:01:02,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:01:02,514 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2ada05c6-694b-43ed-886d-b6938a61e0ac/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 13:01:02,525 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:01:02,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:01:02,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 13:01:02,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 13:01:02,526 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 13:01:02,527 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 13:01:02,527 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 13:01:02,527 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 13:01:02,527 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 13:01:02,527 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 13:01:02,527 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 13:01:02,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:01:02,528 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 13:01:02,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 13:01:02,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:01:02,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 13:01:02,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 13:01:02,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 13:01:02,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 13:01:02,529 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 13:01:02,529 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:01:02,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 13:01:02,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:01:02,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 13:01:02,529 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 13:01:02,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:01:02,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 13:01:02,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:01:02,529 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 13:01:02,530 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 13:01:02,530 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_2ada05c6-694b-43ed-886d-b6938a61e0ac/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 -> bd4093f0fb25d9d8e9de7e7010b28ffecefa6ef0 [2019-12-07 13:01:02,630 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:01:02,638 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:01:02,640 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:01:02,641 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:01:02,641 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:01:02,642 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2ada05c6-694b-43ed-886d-b6938a61e0ac/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.18.c [2019-12-07 13:01:02,679 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2ada05c6-694b-43ed-886d-b6938a61e0ac/bin/uautomizer/data/b852931bc/cbf44469e1ed4349ac7fa56b768584ae/FLAG1b748c1a7 [2019-12-07 13:01:03,019 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:01:03,019 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2ada05c6-694b-43ed-886d-b6938a61e0ac/sv-benchmarks/c/termination-restricted-15/b.18.c [2019-12-07 13:01:03,023 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2ada05c6-694b-43ed-886d-b6938a61e0ac/bin/uautomizer/data/b852931bc/cbf44469e1ed4349ac7fa56b768584ae/FLAG1b748c1a7 [2019-12-07 13:01:03,418 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2ada05c6-694b-43ed-886d-b6938a61e0ac/bin/uautomizer/data/b852931bc/cbf44469e1ed4349ac7fa56b768584ae [2019-12-07 13:01:03,420 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:01:03,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 13:01:03,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:01:03,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:01:03,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:01:03,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:01:03" (1/1) ... [2019-12-07 13:01:03,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a1e11ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:03, skipping insertion in model container [2019-12-07 13:01:03,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:01:03" (1/1) ... [2019-12-07 13:01:03,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:01:03,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:01:03,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:01:03,549 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:01:03,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:01:03,604 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:01:03,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:03 WrapperNode [2019-12-07 13:01:03,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:01:03,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 13:01:03,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 13:01:03,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 13:01:03,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:03" (1/1) ... [2019-12-07 13:01:03,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:03" (1/1) ... [2019-12-07 13:01:03,626 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 13:01:03,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:01:03,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:01:03,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:01:03,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:03" (1/1) ... [2019-12-07 13:01:03,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:03" (1/1) ... [2019-12-07 13:01:03,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:03" (1/1) ... [2019-12-07 13:01:03,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:03" (1/1) ... [2019-12-07 13:01:03,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:03" (1/1) ... [2019-12-07 13:01:03,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:03" (1/1) ... [2019-12-07 13:01:03,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:03" (1/1) ... [2019-12-07 13:01:03,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:01:03,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:01:03,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:01:03,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:01:03,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ada05c6-694b-43ed-886d-b6938a61e0ac/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 13:01:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:01:03,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:01:03,775 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:01:03,775 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 13:01:03,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:01:03 BoogieIcfgContainer [2019-12-07 13:01:03,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:01:03,776 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 13:01:03,776 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 13:01:03,779 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 13:01:03,780 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 13:01:03,780 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 01:01:03" (1/3) ... [2019-12-07 13:01:03,781 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6df09e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 01:01:03, skipping insertion in model container [2019-12-07 13:01:03,781 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 13:01:03,781 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:03" (2/3) ... [2019-12-07 13:01:03,781 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6df09e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 01:01:03, skipping insertion in model container [2019-12-07 13:01:03,781 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 13:01:03,781 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:01:03" (3/3) ... [2019-12-07 13:01:03,783 INFO L371 chiAutomizerObserver]: Analyzing ICFG b.18.c [2019-12-07 13:01:03,815 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 13:01:03,815 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 13:01:03,815 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 13:01:03,815 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:01:03,815 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:01:03,815 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 13:01:03,815 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:01:03,815 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 13:01:03,825 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-12-07 13:01:03,838 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 13:01:03,838 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 13:01:03,838 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 13:01:03,843 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 13:01:03,843 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 13:01:03,843 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 13:01:03,843 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-12-07 13:01:03,844 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 13:01:03,844 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 13:01:03,844 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 13:01:03,845 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 13:01:03,845 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 13:01:03,850 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 5#L15-3true [2019-12-07 13:01:03,850 INFO L796 eck$LassoCheckResult]: Loop: 5#L15-3true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3#L10true assume !(main_~x~0 > main_~y~0); 8#L15-2true assume !(main_~y~0 > 0); 5#L15-3true [2019-12-07 13:01:03,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:01:03,854 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-12-07 13:01:03,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:01:03,861 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682527844] [2019-12-07 13:01:03,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:01:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:01:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:01:03,924 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:01:03,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:01:03,925 INFO L82 PathProgramCache]: Analyzing trace with hash 40272, now seen corresponding path program 1 times [2019-12-07 13:01:03,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:01:03,925 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625271505] [2019-12-07 13:01:03,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:01:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:01:03,957 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 13:01:03,958 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625271505] [2019-12-07 13:01:03,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:01:03,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 13:01:03,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140470199] [2019-12-07 13:01:03,962 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 13:01:03,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:01:03,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:01:03,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:01:03,974 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-12-07 13:01:03,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:01:03,994 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2019-12-07 13:01:03,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:01:03,996 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2019-12-07 13:01:03,997 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-12-07 13:01:03,999 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 7 states and 10 transitions. [2019-12-07 13:01:04,000 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-12-07 13:01:04,000 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-12-07 13:01:04,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-12-07 13:01:04,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 13:01:04,001 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 13:01:04,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-12-07 13:01:04,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2019-12-07 13:01:04,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-12-07 13:01:04,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2019-12-07 13:01:04,025 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-12-07 13:01:04,025 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-12-07 13:01:04,025 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 13:01:04,025 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2019-12-07 13:01:04,026 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 13:01:04,026 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 13:01:04,026 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 13:01:04,026 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 13:01:04,026 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 13:01:04,027 INFO L794 eck$LassoCheckResult]: Stem: 36#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 37#L15-3 [2019-12-07 13:01:04,027 INFO L796 eck$LassoCheckResult]: Loop: 37#L15-3 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 33#L10 assume main_~x~0 > main_~y~0; 35#L11-2 assume !(main_~x~0 > 0); 37#L15-3 [2019-12-07 13:01:04,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:01:04,027 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-12-07 13:01:04,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:01:04,027 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32236354] [2019-12-07 13:01:04,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:01:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:01:04,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:01:04,031 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:01:04,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:01:04,032 INFO L82 PathProgramCache]: Analyzing trace with hash 39824, now seen corresponding path program 1 times [2019-12-07 13:01:04,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:01:04,032 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783637881] [2019-12-07 13:01:04,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:01:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:01:04,041 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 13:01:04,042 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783637881] [2019-12-07 13:01:04,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:01:04,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 13:01:04,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999041014] [2019-12-07 13:01:04,042 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 13:01:04,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:01:04,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:01:04,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:01:04,043 INFO L87 Difference]: Start difference. First operand 6 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-12-07 13:01:04,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:01:04,052 INFO L93 Difference]: Finished difference Result 8 states and 11 transitions. [2019-12-07 13:01:04,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:01:04,053 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 11 transitions. [2019-12-07 13:01:04,054 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-12-07 13:01:04,054 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 11 transitions. [2019-12-07 13:01:04,054 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-12-07 13:01:04,054 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-12-07 13:01:04,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-12-07 13:01:04,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 13:01:04,055 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-12-07 13:01:04,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-12-07 13:01:04,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-12-07 13:01:04,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 13:01:04,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-12-07 13:01:04,056 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 13:01:04,056 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 13:01:04,056 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 13:01:04,056 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-12-07 13:01:04,057 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-12-07 13:01:04,057 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 13:01:04,057 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 13:01:04,057 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 13:01:04,057 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 13:01:04,057 INFO L794 eck$LassoCheckResult]: Stem: 56#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 57#L15-3 [2019-12-07 13:01:04,058 INFO L796 eck$LassoCheckResult]: Loop: 57#L15-3 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 53#L10 assume !(main_~x~0 > main_~y~0); 54#L15-2 assume !!(main_~y~0 > 0);main_~y~0 := main_~y~0 - 1; 58#L15-2 assume !(main_~y~0 > 0); 57#L15-3 [2019-12-07 13:01:04,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:01:04,058 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2019-12-07 13:01:04,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:01:04,058 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923999067] [2019-12-07 13:01:04,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:01:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:01:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:01:04,063 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:01:04,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:01:04,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1248528, now seen corresponding path program 1 times [2019-12-07 13:01:04,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:01:04,063 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245834533] [2019-12-07 13:01:04,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:01:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:01:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:01:04,070 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:01:04,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:01:04,070 INFO L82 PathProgramCache]: Analyzing trace with hash 29877679, now seen corresponding path program 1 times [2019-12-07 13:01:04,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:01:04,071 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642561859] [2019-12-07 13:01:04,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:01:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:01:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:01:04,079 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:01:04,114 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 13:01:04,115 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 13:01:04,115 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 13:01:04,115 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 13:01:04,115 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 13:01:04,115 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:01:04,115 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 13:01:04,115 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 13:01:04,115 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration3_Loop [2019-12-07 13:01:04,116 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 13:01:04,116 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 13:01:04,129 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 13:01:04,141 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 13:01:04,144 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 13:01:04,193 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 13:01:04,193 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ada05c6-694b-43ed-886d-b6938a61e0ac/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 13:01:04,198 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 13:01:04,198 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ada05c6-694b-43ed-886d-b6938a61e0ac/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 13:01:04,209 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 13:01:04,209 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 13:01:04,274 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 13:01:04,275 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 13:01:04,275 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 13:01:04,275 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 13:01:04,275 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 13:01:04,275 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 13:01:04,276 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:01:04,276 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 13:01:04,276 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 13:01:04,276 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration3_Loop [2019-12-07 13:01:04,276 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 13:01:04,276 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 13:01:04,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:01:04,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:01:04,287 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 13:01:04,322 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 13:01:04,325 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ada05c6-694b-43ed-886d-b6938a61e0ac/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 13:01:04,329 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 13:01:04,330 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 13:01:04,330 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 13:01:04,331 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 13:01:04,331 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 13:01:04,331 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 13:01:04,333 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 13:01:04,333 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 13:01:04,335 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 13:01:04,342 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-12-07 13:01:04,342 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ada05c6-694b-43ed-886d-b6938a61e0ac/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 13:01:04,345 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 13:01:04,346 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 13:01:04,346 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 13:01:04,347 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-12-07 13:01:04,349 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 13:01:04,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:01:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:01:04,371 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 13:01:04,371 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:01:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:01:04,377 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 13:01:04,378 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:01:04,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 13:01:04,394 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 [2019-12-07 13:01:04,395 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-12-07 13:01:04,437 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 16 states and 23 transitions. Complement of second has 6 states. [2019-12-07 13:01:04,438 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 [2019-12-07 13:01:04,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 13:01:04,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-12-07 13:01:04,439 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2019-12-07 13:01:04,440 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:01:04,440 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 4 letters. [2019-12-07 13:01:04,440 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:01:04,440 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 8 letters. [2019-12-07 13:01:04,441 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:01:04,441 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2019-12-07 13:01:04,442 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 13:01:04,442 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 15 states and 21 transitions. [2019-12-07 13:01:04,442 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-12-07 13:01:04,442 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-12-07 13:01:04,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 21 transitions. [2019-12-07 13:01:04,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 13:01:04,443 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2019-12-07 13:01:04,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 21 transitions. [2019-12-07 13:01:04,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2019-12-07 13:01:04,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 13:01:04,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2019-12-07 13:01:04,444 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-12-07 13:01:04,444 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-12-07 13:01:04,444 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 13:01:04,444 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2019-12-07 13:01:04,445 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 13:01:04,445 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 13:01:04,445 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 13:01:04,445 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 13:01:04,445 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 13:01:04,445 INFO L794 eck$LassoCheckResult]: Stem: 120#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 121#L15-3 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 115#L10 [2019-12-07 13:01:04,445 INFO L796 eck$LassoCheckResult]: Loop: 115#L10 assume main_~x~0 > main_~y~0; 116#L11-2 assume !!(main_~x~0 > 0);main_~x~0 := main_~x~0 - 1; 125#L11-2 assume !(main_~x~0 > 0); 122#L15-3 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 115#L10 [2019-12-07 13:01:04,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:01:04,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-12-07 13:01:04,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:01:04,446 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769743137] [2019-12-07 13:01:04,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:01:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:01:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:01:04,451 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:01:04,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:01:04,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1332576, now seen corresponding path program 1 times [2019-12-07 13:01:04,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:01:04,452 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107899283] [2019-12-07 13:01:04,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:01:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:01:04,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 13:01:04,461 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107899283] [2019-12-07 13:01:04,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:01:04,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:01:04,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266907947] [2019-12-07 13:01:04,461 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 13:01:04,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:01:04,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:01:04,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:01:04,462 INFO L87 Difference]: Start difference. First operand 12 states and 18 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-12-07 13:01:04,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:01:04,466 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2019-12-07 13:01:04,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:01:04,467 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2019-12-07 13:01:04,467 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 13:01:04,468 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 13 transitions. [2019-12-07 13:01:04,468 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-12-07 13:01:04,468 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-12-07 13:01:04,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2019-12-07 13:01:04,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 13:01:04,468 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-12-07 13:01:04,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2019-12-07 13:01:04,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-12-07 13:01:04,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 13:01:04,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2019-12-07 13:01:04,469 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2019-12-07 13:01:04,469 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2019-12-07 13:01:04,469 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 13:01:04,469 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 12 transitions. [2019-12-07 13:01:04,470 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 13:01:04,470 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 13:01:04,470 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 13:01:04,470 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 13:01:04,470 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 13:01:04,470 INFO L794 eck$LassoCheckResult]: Stem: 151#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 152#L15-3 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 147#L10 assume main_~x~0 > main_~y~0; 148#L11-2 [2019-12-07 13:01:04,470 INFO L796 eck$LassoCheckResult]: Loop: 148#L11-2 assume !!(main_~x~0 > 0);main_~x~0 := main_~x~0 - 1; 148#L11-2 [2019-12-07 13:01:04,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:01:04,470 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-12-07 13:01:04,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:01:04,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528551015] [2019-12-07 13:01:04,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:01:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:01:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:01:04,477 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:01:04,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:01:04,478 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2019-12-07 13:01:04,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:01:04,478 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236696144] [2019-12-07 13:01:04,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:01:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:01:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:01:04,481 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:01:04,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:01:04,481 INFO L82 PathProgramCache]: Analyzing trace with hash 963347, now seen corresponding path program 1 times [2019-12-07 13:01:04,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:01:04,482 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990158192] [2019-12-07 13:01:04,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:01:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:01:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:01:04,488 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:01:04,495 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 13:01:04,495 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 13:01:04,495 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 13:01:04,495 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 13:01:04,495 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 13:01:04,495 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:01:04,495 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 13:01:04,495 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 13:01:04,495 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration5_Loop [2019-12-07 13:01:04,495 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 13:01:04,495 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 13:01:04,496 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 13:01:04,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:01:04,502 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 13:01:04,530 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 13:01:04,530 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ada05c6-694b-43ed-886d-b6938a61e0ac/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 13:01:04,538 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 13:01:04,538 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 13:01:04,543 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 13:01:04,543 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_2ada05c6-694b-43ed-886d-b6938a61e0ac/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 13:01:04,547 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 13:01:04,547 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ada05c6-694b-43ed-886d-b6938a61e0ac/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 13:01:04,554 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 13:01:04,555 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 13:01:04,562 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 13:01:04,563 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 13:01:04,563 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 13:01:04,563 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 13:01:04,564 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 13:01:04,564 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 13:01:04,564 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:01:04,564 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 13:01:04,564 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 13:01:04,564 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration5_Loop [2019-12-07 13:01:04,564 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 13:01:04,564 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 13:01:04,565 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 13:01:04,568 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 13:01:04,572 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 13:01:04,598 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 13:01:04,598 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ada05c6-694b-43ed-886d-b6938a61e0ac/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 13:01:04,601 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 13:01:04,602 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 13:01:04,602 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 13:01:04,602 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 13:01:04,602 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 13:01:04,604 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 13:01:04,605 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 13:01:04,607 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ada05c6-694b-43ed-886d-b6938a61e0ac/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 13:01:04,611 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 13:01:04,612 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 13:01:04,612 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 13:01:04,613 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 13:01:04,613 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 13:01:04,613 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 13:01:04,613 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 13:01:04,614 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 13:01:04,615 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 13:01:04,618 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 13:01:04,618 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ada05c6-694b-43ed-886d-b6938a61e0ac/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 13:01:04,621 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 13:01:04,621 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 13:01:04,621 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 13:01:04,621 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-12-07 13:01:04,623 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 13:01:04,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:01:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:01:04,642 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 13:01:04,643 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:01:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:01:04,645 WARN L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 13:01:04,646 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:01:04,646 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 13:01:04,646 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 13:01:04,646 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 5 Second operand 2 states. [2019-12-07 13:01:04,650 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 10 states and 13 transitions. Complement of second has 2 states. [2019-12-07 13:01:04,651 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 13:01:04,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 13:01:04,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 7 transitions. [2019-12-07 13:01:04,651 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 3 letters. Loop has 1 letters. [2019-12-07 13:01:04,651 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:01:04,651 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 4 letters. Loop has 1 letters. [2019-12-07 13:01:04,651 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:01:04,652 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 3 letters. Loop has 2 letters. [2019-12-07 13:01:04,652 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:01:04,652 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2019-12-07 13:01:04,652 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 13:01:04,653 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2019-12-07 13:01:04,653 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 13:01:04,653 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 13:01:04,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 13:01:04,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 13:01:04,653 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 13:01:04,653 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 13:01:04,653 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 13:01:04,654 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 13:01:04,654 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 13:01:04,654 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 13:01:04,654 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 13:01:04,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 01:01:04 BoogieIcfgContainer [2019-12-07 13:01:04,659 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 13:01:04,659 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:01:04,659 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:01:04,659 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:01:04,660 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:01:03" (3/4) ... [2019-12-07 13:01:04,662 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 13:01:04,662 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:01:04,664 INFO L168 Benchmark]: Toolchain (without parser) took 1242.71 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 944.7 MB in the beginning and 924.0 MB in the end (delta: 20.7 MB). Peak memory consumption was 119.2 MB. Max. memory is 11.5 GB. [2019-12-07 13:01:04,664 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:01:04,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 182.41 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -151.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-12-07 13:01:04,666 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.58 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:01:04,666 INFO L168 Benchmark]: Boogie Preprocessor took 13.14 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 13:01:04,666 INFO L168 Benchmark]: RCFGBuilder took 136.34 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: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2019-12-07 13:01:04,667 INFO L168 Benchmark]: BuchiAutomizer took 882.39 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 924.0 MB in the end (delta: 150.9 MB). Peak memory consumption was 150.9 MB. Max. memory is 11.5 GB. [2019-12-07 13:01:04,667 INFO L168 Benchmark]: Witness Printer took 3.45 ms. Allocated memory is still 1.1 GB. Free memory is still 924.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:01:04,670 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 182.41 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -151.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.58 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.14 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 136.34 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: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 882.39 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 924.0 MB in the end (delta: 150.9 MB). Peak memory consumption was 150.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.45 ms. Allocated memory is still 1.1 GB. Free memory is still 924.0 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 5 terminating modules (3 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function x and consists of 2 locations. 3 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.8s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 34 SDtfs, 25 SDslu, 7 SDs, 0 SdLazy, 34 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI3 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax193 hnf96 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq148 hnf94 smp88 dnf100 smp100 tf112 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 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...