./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_7bbecd40-a2d0-41ff-ba49-817fb5fec891/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7bbecd40-a2d0-41ff-ba49-817fb5fec891/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7bbecd40-a2d0-41ff-ba49-817fb5fec891/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7bbecd40-a2d0-41ff-ba49-817fb5fec891/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7bbecd40-a2d0-41ff-ba49-817fb5fec891/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7bbecd40-a2d0-41ff-ba49-817fb5fec891/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 bbffee41c5a3e36a7439f4e96877154fc3cf2a16 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:56:48,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:56:48,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:56:48,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:56:48,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:56:48,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:56:48,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:56:48,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:56:48,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:56:48,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:56:48,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:56:48,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:56:48,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:56:48,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:56:48,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:56:48,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:56:48,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:56:48,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:56:48,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:56:48,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:56:48,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:56:48,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:56:48,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:56:48,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:56:48,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:56:48,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:56:48,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:56:49,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:56:49,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:56:49,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:56:49,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:56:49,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:56:49,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:56:49,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:56:49,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:56:49,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:56:49,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:56:49,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:56:49,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:56:49,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:56:49,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:56:49,010 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7bbecd40-a2d0-41ff-ba49-817fb5fec891/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 08:56:49,022 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:56:49,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:56:49,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:56:49,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:56:49,034 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:56:49,034 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:56:49,035 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:56:49,035 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:56:49,035 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:56:49,035 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:56:49,035 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:56:49,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:56:49,036 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:56:49,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:56:49,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:56:49,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:56:49,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:56:49,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:56:49,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:56:49,037 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:56:49,037 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:56:49,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:56:49,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:56:49,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:56:49,038 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:56:49,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:56:49,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:56:49,038 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:56:49,039 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:56:49,039 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/working_dir_7bbecd40-a2d0-41ff-ba49-817fb5fec891/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 -> bbffee41c5a3e36a7439f4e96877154fc3cf2a16 [2019-10-22 08:56:49,073 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:56:49,082 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:56:49,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:56:49,086 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:56:49,087 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:56:49,092 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7bbecd40-a2d0-41ff-ba49-817fb5fec891/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c [2019-10-22 08:56:49,142 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7bbecd40-a2d0-41ff-ba49-817fb5fec891/bin/uautomizer/data/07803f415/9bcb638eb6b042f189a62fa3c11fd436/FLAGb8fba7681 [2019-10-22 08:56:49,510 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:56:49,511 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7bbecd40-a2d0-41ff-ba49-817fb5fec891/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c [2019-10-22 08:56:49,515 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7bbecd40-a2d0-41ff-ba49-817fb5fec891/bin/uautomizer/data/07803f415/9bcb638eb6b042f189a62fa3c11fd436/FLAGb8fba7681 [2019-10-22 08:56:49,523 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7bbecd40-a2d0-41ff-ba49-817fb5fec891/bin/uautomizer/data/07803f415/9bcb638eb6b042f189a62fa3c11fd436 [2019-10-22 08:56:49,526 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:56:49,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:56:49,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:49,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:56:49,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:56:49,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:49" (1/1) ... [2019-10-22 08:56:49,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f6fec81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:49, skipping insertion in model container [2019-10-22 08:56:49,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:49" (1/1) ... [2019-10-22 08:56:49,541 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:56:49,553 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:56:49,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:49,685 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:56:49,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:49,802 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:56:49,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:49 WrapperNode [2019-10-22 08:56:49,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:49,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:49,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:56:49,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:56:49,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:49" (1/1) ... [2019-10-22 08:56:49,815 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:49" (1/1) ... [2019-10-22 08:56:49,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:49,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:56:49,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:56:49,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:56:49,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:49" (1/1) ... [2019-10-22 08:56:49,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:49" (1/1) ... [2019-10-22 08:56:49,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:49" (1/1) ... [2019-10-22 08:56:49,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:49" (1/1) ... [2019-10-22 08:56:49,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:49" (1/1) ... [2019-10-22 08:56:49,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:49" (1/1) ... [2019-10-22 08:56:49,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:49" (1/1) ... [2019-10-22 08:56:49,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:56:49,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:56:49,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:56:49,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:56:49,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7bbecd40-a2d0-41ff-ba49-817fb5fec891/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 [2019-10-22 08:56:49,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:56:49,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:56:50,005 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:56:50,005 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-22 08:56:50,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:50 BoogieIcfgContainer [2019-10-22 08:56:50,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:56:50,007 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:56:50,007 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:56:50,010 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:56:50,011 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:56:50,011 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:56:49" (1/3) ... [2019-10-22 08:56:50,012 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3a6f8a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:56:50, skipping insertion in model container [2019-10-22 08:56:50,012 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:56:50,012 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:49" (2/3) ... [2019-10-22 08:56:50,012 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3a6f8a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:56:50, skipping insertion in model container [2019-10-22 08:56:50,013 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:56:50,013 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:50" (3/3) ... [2019-10-22 08:56:50,014 INFO L371 chiAutomizerObserver]: Analyzing ICFG Urban-WST2013-Fig1.c [2019-10-22 08:56:50,059 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:56:50,059 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:56:50,059 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:56:50,060 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:56:50,060 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:56:50,060 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:56:50,060 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:56:50,060 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:56:50,076 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-10-22 08:56:50,096 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 08:56:50,096 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:50,096 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:50,103 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:56:50,104 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 08:56:50,104 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:56:50,104 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-10-22 08:56:50,105 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 08:56:50,105 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:50,105 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:50,105 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:56:50,105 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 08:56:50,112 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L18-2true [2019-10-22 08:56:50,113 INFO L793 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0 <= 10); 8#L18true assume main_~x~0 > 6;main_~x~0 := 2 + main_~x~0; 5#L18-2true [2019-10-22 08:56:50,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:50,118 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-10-22 08:56:50,126 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:50,126 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474957150] [2019-10-22 08:56:50,126 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,126 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:50,220 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:50,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:50,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-10-22 08:56:50,222 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:50,222 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647663677] [2019-10-22 08:56:50,222 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,222 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,222 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:50,239 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:50,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:50,241 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-10-22 08:56:50,241 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:50,241 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568927138] [2019-10-22 08:56:50,241 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,241 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:50,253 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:50,370 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:50,370 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:50,371 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:50,371 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:50,371 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:56:50,371 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:50,371 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:50,371 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:50,375 INFO L131 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig1.c_Iteration1_Loop [2019-10-22 08:56:50,375 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:50,375 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:50,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:50,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:50,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:50,498 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:50,499 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7bbecd40-a2d0-41ff-ba49-817fb5fec891/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) [2019-10-22 08:56:50,506 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:50,506 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:50,516 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:50,517 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/working_dir_7bbecd40-a2d0-41ff-ba49-817fb5fec891/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 [2019-10-22 08:56:50,529 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:50,529 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:50,536 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:50,536 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/working_dir_7bbecd40-a2d0-41ff-ba49-817fb5fec891/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 [2019-10-22 08:56:50,542 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:50,542 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7bbecd40-a2d0-41ff-ba49-817fb5fec891/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 [2019-10-22 08:56:50,549 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:50,549 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:50,563 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:56:50,566 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:50,566 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:50,566 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:50,566 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:50,566 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:56:50,566 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:50,566 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:50,567 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:50,567 INFO L131 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig1.c_Iteration1_Loop [2019-10-22 08:56:50,567 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:50,567 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:50,570 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:50,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:50,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:50,624 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:50,629 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:56:50,630 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 [2019-10-22 08:56:50,632 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:50,632 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:50,633 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:50,633 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:50,637 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:56:50,637 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:56:50,644 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:50,645 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 [2019-10-22 08:56:50,645 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:50,646 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:50,646 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:50,646 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:50,648 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:56:50,649 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:56:50,657 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:50,657 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 [2019-10-22 08:56:50,658 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:50,658 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:56:50,658 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:50,658 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:50,659 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:50,660 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:56:50,660 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:56:50,668 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:56:50,676 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:56:50,676 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:56:50,678 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:56:50,678 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:56:50,678 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:56:50,679 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 + 11 Supporting invariants [] [2019-10-22 08:56:50,682 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:56:50,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:50,714 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:56:50,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:50,723 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:56:50,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:50,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:50,753 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 [2019-10-22 08:56:50,754 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2019-10-22 08:56:50,845 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 20 states and 28 transitions. Complement of second has 7 states. [2019-10-22 08:56:50,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-10-22 08:56:50,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:56:50,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2019-10-22 08:56:50,850 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 2 letters. [2019-10-22 08:56:50,851 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:50,851 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 3 letters. Loop has 2 letters. [2019-10-22 08:56:50,852 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:50,852 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 4 letters. [2019-10-22 08:56:50,852 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:50,853 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 28 transitions. [2019-10-22 08:56:50,855 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 08:56:50,861 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 8 states and 11 transitions. [2019-10-22 08:56:50,862 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-10-22 08:56:50,862 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-10-22 08:56:50,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-10-22 08:56:50,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:56:50,863 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-10-22 08:56:50,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-10-22 08:56:50,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-10-22 08:56:50,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-10-22 08:56:50,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-10-22 08:56:50,889 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-10-22 08:56:50,889 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-10-22 08:56:50,889 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:56:50,890 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-10-22 08:56:50,890 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 08:56:50,890 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:50,890 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:50,890 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:56:50,891 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 08:56:50,891 INFO L791 eck$LassoCheckResult]: Stem: 63#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 64#L18-2 assume !!(main_~x~0 <= 10); 66#L18 [2019-10-22 08:56:50,891 INFO L793 eck$LassoCheckResult]: Loop: 66#L18 assume !(main_~x~0 > 6); 65#L18-2 assume !!(main_~x~0 <= 10); 66#L18 [2019-10-22 08:56:50,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:50,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-10-22 08:56:50,893 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:50,893 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623680044] [2019-10-22 08:56:50,893 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,893 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:50,900 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:50,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:50,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2019-10-22 08:56:50,901 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:50,901 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743014320] [2019-10-22 08:56:50,901 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,902 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:50,924 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:50,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:50,925 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 1 times [2019-10-22 08:56:50,925 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:50,925 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163833228] [2019-10-22 08:56:50,925 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,925 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:50,931 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:50,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:56:50 BoogieIcfgContainer [2019-10-22 08:56:51,000 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:56:51,000 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:56:51,001 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:56:51,001 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:56:51,002 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:50" (3/4) ... [2019-10-22 08:56:51,005 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-10-22 08:56:51,037 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_7bbecd40-a2d0-41ff-ba49-817fb5fec891/bin/uautomizer/witness.graphml [2019-10-22 08:56:51,038 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:56:51,040 INFO L168 Benchmark]: Toolchain (without parser) took 1512.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 198.7 MB). Free memory was 949.9 MB in the beginning and 1.1 GB in the end (delta: -135.3 MB). Peak memory consumption was 63.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:51,040 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:51,041 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 198.7 MB). Free memory was 949.9 MB in the beginning and 1.2 GB in the end (delta: -239.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:51,041 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.71 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:51,041 INFO L168 Benchmark]: Boogie Preprocessor took 15.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:51,042 INFO L168 Benchmark]: RCFGBuilder took 160.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:51,042 INFO L168 Benchmark]: BuchiAutomizer took 993.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 82.9 MB). Peak memory consumption was 82.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:51,043 INFO L168 Benchmark]: Witness Printer took 37.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:51,046 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 275.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 198.7 MB). Free memory was 949.9 MB in the beginning and 1.2 GB in the end (delta: -239.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.71 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 160.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 993.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 82.9 MB). Peak memory consumption was 82.9 MB. Max. memory is 11.5 GB. * Witness Printer took 37.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. 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 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * x + 11 and consists of 5 locations. The remainder module has 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 7 SDslu, 6 SDs, 0 SdLazy, 10 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax192 hnf100 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 14ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 18]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@53add5b1=0, \result=0, x=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 18]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L15] int x; [L16] x = __VERIFIER_nondet_int() [L17] COND TRUE x <= 10 Loop: [L18] COND FALSE !(x > 6) [L17] COND TRUE x <= 10 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...