./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.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_73a39d18-5173-40b9-bf3a-ab7f3237e81f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/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 7c08193784b646afd298f73ae6296b7af2e0cac1 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 17:53:39,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:53:39,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:53:39,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:53:39,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:53:39,655 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:53:39,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:53:39,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:53:39,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:53:39,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:53:39,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:53:39,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:53:39,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:53:39,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:53:39,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:53:39,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:53:39,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:53:39,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:53:39,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:53:39,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:53:39,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:53:39,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:53:39,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:53:39,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:53:39,674 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:53:39,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:53:39,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:53:39,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:53:39,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:53:39,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:53:39,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:53:39,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:53:39,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:53:39,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:53:39,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:53:39,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:53:39,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:53:39,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:53:39,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:53:39,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:53:39,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:53:39,681 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 17:53:39,696 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:53:39,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:53:39,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:53:39,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:53:39,697 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:53:39,698 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 17:53:39,698 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 17:53:39,698 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 17:53:39,698 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 17:53:39,698 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 17:53:39,699 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 17:53:39,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:53:39,699 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 17:53:39,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:53:39,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:53:39,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 17:53:39,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 17:53:39,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 17:53:39,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:53:39,700 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 17:53:39,700 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:53:39,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 17:53:39,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:53:39,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:53:39,701 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 17:53:39,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:53:39,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:53:39,702 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:53:39,702 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 17:53:39,702 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 17:53:39,703 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_73a39d18-5173-40b9-bf3a-ab7f3237e81f/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 -> 7c08193784b646afd298f73ae6296b7af2e0cac1 [2019-12-07 17:53:39,821 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:53:39,830 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:53:39,833 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:53:39,835 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:53:39,836 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:53:39,836 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c [2019-12-07 17:53:39,881 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/bin/uautomizer/data/44ba95666/753aa3a8b85c4683bc01a9eb23d61ec6/FLAG0608f1495 [2019-12-07 17:53:40,301 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:53:40,301 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c [2019-12-07 17:53:40,305 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/bin/uautomizer/data/44ba95666/753aa3a8b85c4683bc01a9eb23d61ec6/FLAG0608f1495 [2019-12-07 17:53:40,314 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/bin/uautomizer/data/44ba95666/753aa3a8b85c4683bc01a9eb23d61ec6 [2019-12-07 17:53:40,316 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:53:40,317 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:53:40,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:53:40,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:53:40,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:53:40,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:53:40" (1/1) ... [2019-12-07 17:53:40,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78d2714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:53:40, skipping insertion in model container [2019-12-07 17:53:40,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:53:40" (1/1) ... [2019-12-07 17:53:40,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:53:40,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:53:40,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:53:40,431 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:53:40,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:53:40,479 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:53:40,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:53:40 WrapperNode [2019-12-07 17:53:40,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:53:40,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:53:40,480 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:53:40,480 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:53:40,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:53:40" (1/1) ... [2019-12-07 17:53:40,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:53:40" (1/1) ... [2019-12-07 17:53:40,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:53:40,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:53:40,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:53:40,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:53:40,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:53:40" (1/1) ... [2019-12-07 17:53:40,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:53:40" (1/1) ... [2019-12-07 17:53:40,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:53:40" (1/1) ... [2019-12-07 17:53:40,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:53:40" (1/1) ... [2019-12-07 17:53:40,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:53:40" (1/1) ... [2019-12-07 17:53:40,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:53:40" (1/1) ... [2019-12-07 17:53:40,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:53:40" (1/1) ... [2019-12-07 17:53:40,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:53:40,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:53:40,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:53:40,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:53:40,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:53:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/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 17:53:40,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:53:40,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:53:40,634 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:53:40,634 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 17:53:40,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:53:40 BoogieIcfgContainer [2019-12-07 17:53:40,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:53:40,635 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 17:53:40,635 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 17:53:40,637 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 17:53:40,638 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:53:40,638 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 05:53:40" (1/3) ... [2019-12-07 17:53:40,639 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16d67151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 05:53:40, skipping insertion in model container [2019-12-07 17:53:40,639 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:53:40,639 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:53:40" (2/3) ... [2019-12-07 17:53:40,639 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16d67151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 05:53:40, skipping insertion in model container [2019-12-07 17:53:40,639 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:53:40,639 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:53:40" (3/3) ... [2019-12-07 17:53:40,640 INFO L371 chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig1.c [2019-12-07 17:53:40,669 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 17:53:40,670 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 17:53:40,670 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 17:53:40,670 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:53:40,670 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:53:40,670 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 17:53:40,670 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:53:40,670 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 17:53:40,679 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 17:53:40,691 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 17:53:40,691 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:53:40,691 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:53:40,695 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 17:53:40,695 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 17:53:40,696 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 17:53:40,696 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 17:53:40,696 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 17:53:40,696 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:53:40,696 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:53:40,697 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 17:53:40,697 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 17:53:40,701 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 6#L19-2true [2019-12-07 17:53:40,702 INFO L796 eck$LassoCheckResult]: Loop: 6#L19-2true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 9#L21-2true assume !(main_~j~0 <= main_~i~0); 8#L21-3true main_~i~0 := 1 + main_~i~0; 6#L19-2true [2019-12-07 17:53:40,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:53:40,705 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-12-07 17:53:40,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:53:40,711 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889428932] [2019-12-07 17:53:40,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:53:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:53:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:53:40,777 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:53:40,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:53:40,778 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2019-12-07 17:53:40,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:53:40,778 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040074347] [2019-12-07 17:53:40,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:53:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:53:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:53:40,788 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:53:40,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:53:40,790 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2019-12-07 17:53:40,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:53:40,790 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061311050] [2019-12-07 17:53:40,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:53:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:53:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:53:40,799 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:53:40,832 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:53:40,833 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:53:40,833 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:53:40,833 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:53:40,833 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:53:40,833 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:53:40,833 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:53:40,833 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:53:40,833 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration1_Loop [2019-12-07 17:53:40,833 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:53:40,834 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:53:40,848 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 17:53:40,855 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 17:53:40,858 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 17:53:40,916 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:53:40,917 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/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 17:53:40,922 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:53:40,922 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:53:40,929 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:53:40,929 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_73a39d18-5173-40b9-bf3a-ab7f3237e81f/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 17:53:40,933 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:53:40,933 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:53:40,937 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:53:40,937 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_73a39d18-5173-40b9-bf3a-ab7f3237e81f/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 17:53:40,941 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:53:40,941 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/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 17:53:40,952 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:53:40,953 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:53:41,055 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:53:41,056 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:53:41,056 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:53:41,056 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:53:41,056 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:53:41,056 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:53:41,057 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:53:41,057 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:53:41,057 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:53:41,057 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration1_Loop [2019-12-07 17:53:41,057 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:53:41,057 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:53:41,058 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 17:53:41,062 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 17:53:41,064 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 17:53:41,104 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:53:41,107 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/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 17:53:41,111 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 17:53:41,113 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:53:41,113 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:53:41,113 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:53:41,113 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:53:41,117 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:53:41,117 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:53:41,121 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/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 17:53:41,124 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 17:53:41,125 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:53:41,126 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:53:41,126 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:53:41,126 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:53:41,128 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:53:41,128 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:53:41,133 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/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 17:53:41,137 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 17:53:41,139 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:53:41,139 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:53:41,139 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:53:41,139 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:53:41,139 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:53:41,141 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:53:41,141 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:53:41,143 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:53:41,148 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2019-12-07 17:53:41,148 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/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 17:53:41,152 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:53:41,152 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:53:41,152 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:53:41,153 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 17:53:41,157 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:53:41,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:53:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:53:41,187 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:53:41,187 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:53:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:53:41,194 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 17:53:41,194 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:53:41,220 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 17:53:41,230 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-12-07 17:53:41,231 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 4 states. [2019-12-07 17:53:41,286 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 4 states. Result 30 states and 48 transitions. Complement of second has 9 states. [2019-12-07 17:53:41,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-12-07 17:53:41,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 17:53:41,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 28 transitions. [2019-12-07 17:53:41,290 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 1 letters. Loop has 3 letters. [2019-12-07 17:53:41,291 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:53:41,291 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 4 letters. Loop has 3 letters. [2019-12-07 17:53:41,291 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:53:41,291 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 1 letters. Loop has 6 letters. [2019-12-07 17:53:41,292 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:53:41,292 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 48 transitions. [2019-12-07 17:53:41,295 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 17:53:41,299 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 13 states and 18 transitions. [2019-12-07 17:53:41,300 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-12-07 17:53:41,300 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-12-07 17:53:41,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2019-12-07 17:53:41,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:53:41,301 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2019-12-07 17:53:41,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2019-12-07 17:53:41,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-12-07 17:53:41,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 17:53:41,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2019-12-07 17:53:41,322 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-12-07 17:53:41,322 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-12-07 17:53:41,322 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 17:53:41,322 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2019-12-07 17:53:41,322 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 17:53:41,322 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:53:41,323 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:53:41,323 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 17:53:41,323 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 17:53:41,323 INFO L794 eck$LassoCheckResult]: Stem: 82#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 83#L19-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 85#L21-2 [2019-12-07 17:53:41,323 INFO L796 eck$LassoCheckResult]: Loop: 85#L21-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 91#L21-2 assume !(main_~j~0 <= main_~i~0); 88#L21-3 main_~i~0 := 1 + main_~i~0; 84#L19-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 85#L21-2 [2019-12-07 17:53:41,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:53:41,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-12-07 17:53:41,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:53:41,324 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878817006] [2019-12-07 17:53:41,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:53:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:53:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:53:41,330 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:53:41,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:53:41,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1506610, now seen corresponding path program 1 times [2019-12-07 17:53:41,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:53:41,330 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212619113] [2019-12-07 17:53:41,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:53:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:53:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:53:41,337 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:53:41,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:53:41,337 INFO L82 PathProgramCache]: Analyzing trace with hash 925951131, now seen corresponding path program 1 times [2019-12-07 17:53:41,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:53:41,338 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734869606] [2019-12-07 17:53:41,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:53:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:53:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:53:41,347 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:53:41,365 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:53:41,365 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:53:41,365 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:53:41,365 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:53:41,365 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:53:41,366 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:53:41,366 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:53:41,366 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:53:41,366 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration2_Loop [2019-12-07 17:53:41,366 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:53:41,366 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:53:41,367 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 17:53:41,369 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 17:53:41,371 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 17:53:41,414 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:53:41,414 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/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 17:53:41,418 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:53:41,418 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:53:41,422 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:53:41,422 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_73a39d18-5173-40b9-bf3a-ab7f3237e81f/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 17:53:41,426 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:53:41,426 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:53:41,429 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:53:41,429 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_73a39d18-5173-40b9-bf3a-ab7f3237e81f/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 17:53:41,433 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:53:41,433 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/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 17:53:41,441 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:53:41,441 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:53:41,544 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:53:41,545 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:53:41,545 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:53:41,545 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:53:41,545 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:53:41,546 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:53:41,546 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:53:41,546 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:53:41,546 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:53:41,546 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration2_Loop [2019-12-07 17:53:41,546 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:53:41,546 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:53:41,547 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 17:53:41,550 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 17:53:41,552 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 17:53:41,593 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:53:41,593 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/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 17:53:41,596 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 17:53:41,597 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:53:41,597 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:53:41,597 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:53:41,598 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:53:41,599 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:53:41,599 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:53:41,602 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/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 17:53:41,605 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 17:53:41,607 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:53:41,607 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:53:41,607 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:53:41,607 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:53:41,608 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:53:41,608 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:53:41,612 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/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 17:53:41,615 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 17:53:41,616 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:53:41,617 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:53:41,617 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:53:41,617 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:53:41,617 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:53:41,618 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:53:41,618 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:53:41,620 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:53:41,624 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 17:53:41,624 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:53:41,630 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:53:41,630 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:53:41,630 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:53:41,631 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 17:53:41,632 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:53:41,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:53:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:53:41,647 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:53:41,647 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:53:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:53:41,650 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:53:41,650 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:53:41,657 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 17:53:41,657 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 17:53:41,657 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-12-07 17:53:41,673 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 22 states and 31 transitions. Complement of second has 6 states. [2019-12-07 17:53:41,673 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 17:53:41,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 17:53:41,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-12-07 17:53:41,674 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2019-12-07 17:53:41,674 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:53:41,674 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2019-12-07 17:53:41,674 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:53:41,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 8 letters. [2019-12-07 17:53:41,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:53:41,675 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 31 transitions. [2019-12-07 17:53:41,676 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 17:53:41,676 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 15 states and 22 transitions. [2019-12-07 17:53:41,676 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-12-07 17:53:41,677 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-12-07 17:53:41,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 22 transitions. [2019-12-07 17:53:41,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:53:41,677 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2019-12-07 17:53:41,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 22 transitions. [2019-12-07 17:53:41,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-12-07 17:53:41,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-07 17:53:41,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 21 transitions. [2019-12-07 17:53:41,678 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2019-12-07 17:53:41,678 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2019-12-07 17:53:41,678 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 17:53:41,679 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 21 transitions. [2019-12-07 17:53:41,679 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 17:53:41,679 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:53:41,679 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:53:41,679 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 17:53:41,679 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 17:53:41,680 INFO L794 eck$LassoCheckResult]: Stem: 157#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 158#L19-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 159#L21-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 163#L21-2 [2019-12-07 17:53:41,680 INFO L796 eck$LassoCheckResult]: Loop: 163#L21-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 163#L21-2 [2019-12-07 17:53:41,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:53:41,680 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-12-07 17:53:41,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:53:41,680 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725231186] [2019-12-07 17:53:41,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:53:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:53:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:53:41,687 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:53:41,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:53:41,687 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-12-07 17:53:41,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:53:41,687 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583067160] [2019-12-07 17:53:41,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:53:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:53:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:53:41,691 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:53:41,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:53:41,691 INFO L82 PathProgramCache]: Analyzing trace with hash 963530, now seen corresponding path program 2 times [2019-12-07 17:53:41,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:53:41,691 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70781420] [2019-12-07 17:53:41,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:53:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:53:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:53:41,699 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:53:41,707 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:53:41,707 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:53:41,707 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:53:41,707 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:53:41,707 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:53:41,707 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:53:41,707 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:53:41,707 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:53:41,707 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration3_Loop [2019-12-07 17:53:41,708 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:53:41,708 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:53:41,708 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 17:53:41,711 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 17:53:41,716 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 17:53:41,745 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:53:41,746 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:53:41,748 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:53:41,748 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:53:41,751 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:53:41,751 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:53:41,755 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:53:41,755 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:53:41,761 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:53:41,761 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:53:41,879 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:53:41,880 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:53:41,880 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:53:41,880 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:53:41,880 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:53:41,880 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:53:41,880 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:53:41,880 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:53:41,880 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:53:41,880 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration3_Loop [2019-12-07 17:53:41,881 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:53:41,881 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:53:41,881 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 17:53:41,886 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 17:53:41,891 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 17:53:41,914 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:53:41,915 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:53:41,917 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 17:53:41,918 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:53:41,918 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:53:41,918 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:53:41,919 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:53:41,920 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:53:41,920 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:53:41,923 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:53:41,927 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 17:53:41,928 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:53:41,928 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:53:41,928 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:53:41,929 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:53:41,929 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:53:41,929 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:53:41,929 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:53:41,931 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:53:41,934 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 17:53:41,934 INFO L444 ModelExtractionUtils]: 0 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_73a39d18-5173-40b9-bf3a-ab7f3237e81f/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:53:41,936 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:53:41,936 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:53:41,936 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:53:41,937 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 2*ULTIMATE.start_main_~i~0 - 2*ULTIMATE.start_main_~j~0 + 1 Supporting invariants [] [2019-12-07 17:53:41,938 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:53:41,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:53:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:53:41,953 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:53:41,953 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:53:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:53:41,956 WARN L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:53:41,956 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:53:41,956 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 17:53:41,957 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 17:53:41,957 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 21 transitions. cyclomatic complexity: 10 Second operand 2 states. [2019-12-07 17:53:41,964 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 21 transitions. cyclomatic complexity: 10. Second operand 2 states. Result 26 states and 38 transitions. Complement of second has 5 states. [2019-12-07 17:53:41,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 17:53:41,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 17:53:41,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-12-07 17:53:41,964 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 1 letters. [2019-12-07 17:53:41,965 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:53:41,965 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 1 letters. [2019-12-07 17:53:41,965 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:53:41,965 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 2 letters. [2019-12-07 17:53:41,966 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:53:41,966 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 38 transitions. [2019-12-07 17:53:41,967 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 17:53:41,967 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 22 states and 33 transitions. [2019-12-07 17:53:41,967 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-12-07 17:53:41,967 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-12-07 17:53:41,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 33 transitions. [2019-12-07 17:53:41,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:53:41,968 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 33 transitions. [2019-12-07 17:53:41,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 33 transitions. [2019-12-07 17:53:41,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2019-12-07 17:53:41,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 17:53:41,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 27 transitions. [2019-12-07 17:53:41,969 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 27 transitions. [2019-12-07 17:53:41,969 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 27 transitions. [2019-12-07 17:53:41,969 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 17:53:41,969 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 27 transitions. [2019-12-07 17:53:41,970 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 17:53:41,970 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:53:41,970 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:53:41,971 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2019-12-07 17:53:41,971 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 17:53:41,971 INFO L794 eck$LassoCheckResult]: Stem: 229#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 230#L19-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 232#L21-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 236#L21-2 assume !(main_~j~0 <= main_~i~0); 245#L21-3 main_~i~0 := 1 + main_~i~0; 243#L19-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 239#L21-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 238#L21-2 [2019-12-07 17:53:41,971 INFO L796 eck$LassoCheckResult]: Loop: 238#L21-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 238#L21-2 [2019-12-07 17:53:41,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:53:41,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1360285992, now seen corresponding path program 2 times [2019-12-07 17:53:41,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:53:41,972 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449869994] [2019-12-07 17:53:41,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:53:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:53:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:53:41,982 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:53:41,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:53:41,982 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2019-12-07 17:53:41,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:53:41,983 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356044311] [2019-12-07 17:53:41,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:53:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:53:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:53:41,986 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:53:41,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:53:41,986 INFO L82 PathProgramCache]: Analyzing trace with hash 780807227, now seen corresponding path program 3 times [2019-12-07 17:53:41,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:53:41,987 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7073615] [2019-12-07 17:53:41,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:53:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:53:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:53:41,996 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:53:42,003 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:53:42,004 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:53:42,004 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:53:42,004 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:53:42,004 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:53:42,004 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:53:42,004 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:53:42,004 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:53:42,004 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration4_Loop [2019-12-07 17:53:42,004 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:53:42,004 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:53:42,005 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 17:53:42,010 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 17:53:42,011 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 17:53:42,044 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:53:42,044 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:53:42,047 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:53:42,047 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:53:42,054 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:53:42,054 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:53:42,172 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:53:42,173 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:53:42,173 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:53:42,174 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:53:42,174 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:53:42,174 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:53:42,174 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:53:42,174 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:53:42,174 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:53:42,174 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration4_Loop [2019-12-07 17:53:42,174 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:53:42,174 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:53:42,175 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 17:53:42,179 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 17:53:42,180 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 17:53:42,201 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:53:42,201 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73a39d18-5173-40b9-bf3a-ab7f3237e81f/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:53:42,204 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 17:53:42,205 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:53:42,205 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:53:42,205 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:53:42,205 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:53:42,205 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:53:42,206 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:53:42,206 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:53:42,208 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:53:42,209 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 17:53:42,209 INFO L444 ModelExtractionUtils]: 0 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_73a39d18-5173-40b9-bf3a-ab7f3237e81f/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:53:42,212 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:53:42,212 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:53:42,212 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:53:42,212 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 2*ULTIMATE.start_main_~i~0 - 2*ULTIMATE.start_main_~j~0 + 1 Supporting invariants [] [2019-12-07 17:53:42,213 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:53:42,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:53:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:53:42,226 INFO L264 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:53:42,227 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:53:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:53:42,229 WARN L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:53:42,229 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:53:42,229 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 17:53:42,230 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 17:53:42,230 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-12-07 17:53:42,236 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 24 states and 35 transitions. Complement of second has 5 states. [2019-12-07 17:53:42,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 17:53:42,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 17:53:42,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-12-07 17:53:42,237 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 1 letters. [2019-12-07 17:53:42,237 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:53:42,237 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 17:53:42,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:53:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:53:42,249 INFO L264 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:53:42,250 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:53:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:53:42,252 WARN L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:53:42,252 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:53:42,252 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 17:53:42,252 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 17:53:42,252 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-12-07 17:53:42,258 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 24 states and 35 transitions. Complement of second has 5 states. [2019-12-07 17:53:42,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 17:53:42,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 17:53:42,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-12-07 17:53:42,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 1 letters. [2019-12-07 17:53:42,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:53:42,259 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 17:53:42,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:53:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:53:42,271 INFO L264 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:53:42,272 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:53:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:53:42,274 WARN L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:53:42,274 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:53:42,274 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 17:53:42,274 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 17:53:42,274 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-12-07 17:53:42,281 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 21 states and 30 transitions. Complement of second has 4 states. [2019-12-07 17:53:42,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 17:53:42,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 17:53:42,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-12-07 17:53:42,282 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 7 letters. Loop has 1 letters. [2019-12-07 17:53:42,282 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:53:42,282 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2019-12-07 17:53:42,282 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:53:42,282 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 7 letters. Loop has 2 letters. [2019-12-07 17:53:42,282 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:53:42,282 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 30 transitions. [2019-12-07 17:53:42,283 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 17:53:42,283 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2019-12-07 17:53:42,283 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 17:53:42,283 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 17:53:42,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 17:53:42,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 17:53:42,283 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:53:42,283 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:53:42,283 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:53:42,283 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 17:53:42,283 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 17:53:42,283 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 17:53:42,283 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 17:53:42,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 05:53:42 BoogieIcfgContainer [2019-12-07 17:53:42,288 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 17:53:42,288 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:53:42,288 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:53:42,288 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:53:42,288 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:53:40" (3/4) ... [2019-12-07 17:53:42,290 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 17:53:42,291 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:53:42,292 INFO L168 Benchmark]: Toolchain (without parser) took 1974.90 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 78.6 MB). Free memory was 946.3 MB in the beginning and 1.0 GB in the end (delta: -69.8 MB). Peak memory consumption was 8.9 MB. Max. memory is 11.5 GB. [2019-12-07 17:53:42,292 INFO L168 Benchmark]: CDTParser took 0.19 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 17:53:42,293 INFO L168 Benchmark]: CACSL2BoogieTranslator took 162.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 78.6 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -127.0 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2019-12-07 17:53:42,293 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.99 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 17:53:42,293 INFO L168 Benchmark]: Boogie Preprocessor took 11.83 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 17:53:42,294 INFO L168 Benchmark]: RCFGBuilder took 123.66 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-12-07 17:53:42,294 INFO L168 Benchmark]: BuchiAutomizer took 1652.40 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 40.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 11.5 GB. [2019-12-07 17:53:42,295 INFO L168 Benchmark]: Witness Printer took 2.70 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:53:42,297 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 162.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 78.6 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -127.0 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.99 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 11.83 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 123.66 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1652.40 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 40.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.70 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * i and consists of 6 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One deterministic module has affine ranking function 2 * i + -2 * j + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * i + -2 * j + 1 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 18 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 26 SDtfs, 32 SDslu, 9 SDs, 0 SdLazy, 50 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax191 hnf99 lsp52 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq157 hnf93 smp100 dnf100 smp100 tf110 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...