./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Ex06.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_93fe24ff-6847-4472-94ba-a82690f6bdc6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_93fe24ff-6847-4472-94ba-a82690f6bdc6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_93fe24ff-6847-4472-94ba-a82690f6bdc6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_93fe24ff-6847-4472-94ba-a82690f6bdc6/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Ex06.c -s /tmp/vcloud-vcloud-master/worker/run_dir_93fe24ff-6847-4472-94ba-a82690f6bdc6/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_93fe24ff-6847-4472-94ba-a82690f6bdc6/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 3ac2445d235ff9d71a6974ac9afce215f9983492 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-678e011 [2019-11-19 23:45:36,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 23:45:36,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 23:45:36,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 23:45:36,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 23:45:36,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 23:45:36,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 23:45:36,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 23:45:36,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 23:45:36,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 23:45:36,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 23:45:36,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 23:45:36,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 23:45:36,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 23:45:36,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 23:45:36,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 23:45:36,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 23:45:36,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 23:45:36,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 23:45:36,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 23:45:36,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 23:45:36,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 23:45:36,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 23:45:36,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 23:45:36,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 23:45:36,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 23:45:36,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 23:45:36,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 23:45:36,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 23:45:36,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 23:45:36,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 23:45:36,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 23:45:36,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 23:45:36,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 23:45:36,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 23:45:36,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 23:45:36,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 23:45:36,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 23:45:36,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 23:45:36,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 23:45:36,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 23:45:36,140 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_93fe24ff-6847-4472-94ba-a82690f6bdc6/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-19 23:45:36,156 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 23:45:36,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 23:45:36,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 23:45:36,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 23:45:36,158 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 23:45:36,158 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-19 23:45:36,158 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-19 23:45:36,158 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-19 23:45:36,158 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-19 23:45:36,159 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-19 23:45:36,159 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-19 23:45:36,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 23:45:36,159 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 23:45:36,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 23:45:36,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 23:45:36,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-19 23:45:36,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-19 23:45:36,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-19 23:45:36,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 23:45:36,160 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-19 23:45:36,161 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 23:45:36,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-19 23:45:36,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 23:45:36,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 23:45:36,161 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-19 23:45:36,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 23:45:36,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 23:45:36,162 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-19 23:45:36,163 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-19 23:45:36,163 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_93fe24ff-6847-4472-94ba-a82690f6bdc6/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 -> 3ac2445d235ff9d71a6974ac9afce215f9983492 [2019-11-19 23:45:36,327 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 23:45:36,338 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 23:45:36,340 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 23:45:36,342 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 23:45:36,342 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 23:45:36,343 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_93fe24ff-6847-4472-94ba-a82690f6bdc6/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/Ex06.c [2019-11-19 23:45:36,395 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_93fe24ff-6847-4472-94ba-a82690f6bdc6/bin/uautomizer/data/fd77e6292/bd747f00d9af4c2fa4b17dab6b0db27b/FLAG1e0690bcf [2019-11-19 23:45:36,784 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 23:45:36,784 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_93fe24ff-6847-4472-94ba-a82690f6bdc6/sv-benchmarks/c/termination-restricted-15/Ex06.c [2019-11-19 23:45:36,788 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_93fe24ff-6847-4472-94ba-a82690f6bdc6/bin/uautomizer/data/fd77e6292/bd747f00d9af4c2fa4b17dab6b0db27b/FLAG1e0690bcf [2019-11-19 23:45:36,800 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_93fe24ff-6847-4472-94ba-a82690f6bdc6/bin/uautomizer/data/fd77e6292/bd747f00d9af4c2fa4b17dab6b0db27b [2019-11-19 23:45:36,802 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 23:45:36,804 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 23:45:36,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 23:45:36,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 23:45:36,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 23:45:36,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:45:36" (1/1) ... [2019-11-19 23:45:36,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7edf95a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:45:36, skipping insertion in model container [2019-11-19 23:45:36,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:45:36" (1/1) ... [2019-11-19 23:45:36,820 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 23:45:36,833 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 23:45:36,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:45:36,954 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 23:45:37,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:45:37,042 INFO L192 MainTranslator]: Completed translation [2019-11-19 23:45:37,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:45:37 WrapperNode [2019-11-19 23:45:37,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 23:45:37,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 23:45:37,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 23:45:37,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 23:45:37,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:45:37" (1/1) ... [2019-11-19 23:45:37,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:45:37" (1/1) ... [2019-11-19 23:45:37,076 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 23:45:37,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 23:45:37,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 23:45:37,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 23:45:37,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:45:37" (1/1) ... [2019-11-19 23:45:37,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:45:37" (1/1) ... [2019-11-19 23:45:37,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:45:37" (1/1) ... [2019-11-19 23:45:37,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:45:37" (1/1) ... [2019-11-19 23:45:37,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:45:37" (1/1) ... [2019-11-19 23:45:37,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:45:37" (1/1) ... [2019-11-19 23:45:37,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:45:37" (1/1) ... [2019-11-19 23:45:37,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 23:45:37,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 23:45:37,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 23:45:37,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 23:45:37,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:45:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93fe24ff-6847-4472-94ba-a82690f6bdc6/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:45:37,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 23:45:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 23:45:37,371 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 23:45:37,371 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-19 23:45:37,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:45:37 BoogieIcfgContainer [2019-11-19 23:45:37,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 23:45:37,373 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-19 23:45:37,373 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-19 23:45:37,377 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-19 23:45:37,378 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 23:45:37,378 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 11:45:36" (1/3) ... [2019-11-19 23:45:37,379 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@355cce59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 11:45:37, skipping insertion in model container [2019-11-19 23:45:37,379 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 23:45:37,380 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:45:37" (2/3) ... [2019-11-19 23:45:37,380 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@355cce59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 11:45:37, skipping insertion in model container [2019-11-19 23:45:37,380 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 23:45:37,380 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:45:37" (3/3) ... [2019-11-19 23:45:37,382 INFO L371 chiAutomizerObserver]: Analyzing ICFG Ex06.c [2019-11-19 23:45:37,430 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-19 23:45:37,431 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-19 23:45:37,431 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-19 23:45:37,431 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 23:45:37,431 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 23:45:37,432 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-19 23:45:37,432 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 23:45:37,432 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-19 23:45:37,445 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-19 23:45:37,464 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-19 23:45:37,464 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:45:37,465 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:45:37,471 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-19 23:45:37,471 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 23:45:37,471 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-19 23:45:37,471 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-19 23:45:37,472 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-19 23:45:37,472 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:45:37,473 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:45:37,473 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-19 23:45:37,473 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 23:45:37,478 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L13-1true [2019-11-19 23:45:37,479 INFO L796 eck$LassoCheckResult]: Loop: 5#L13-1true assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 3#L10true assume main_~i~0 > 0;main_~i~0 := main_~i~0 - 1; 9#L10-2true assume main_~i~0 < 0;main_~i~0 := 1 + main_~i~0; 5#L13-1true [2019-11-19 23:45:37,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:45:37,483 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-19 23:45:37,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:45:37,489 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724624121] [2019-11-19 23:45:37,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:45:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:45:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:45:37,580 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:45:37,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:45:37,582 INFO L82 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 1 times [2019-11-19 23:45:37,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:45:37,582 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809092740] [2019-11-19 23:45:37,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:45:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:45:37,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:45:37,674 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809092740] [2019-11-19 23:45:37,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:45:37,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 23:45:37,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624693381] [2019-11-19 23:45:37,681 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-19 23:45:37,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:45:37,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 23:45:37,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:45:37,718 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2019-11-19 23:45:37,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:45:37,795 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2019-11-19 23:45:37,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:45:37,798 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2019-11-19 23:45:37,799 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-19 23:45:37,802 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 7 states and 10 transitions. [2019-11-19 23:45:37,803 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-19 23:45:37,803 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-19 23:45:37,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-11-19 23:45:37,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 23:45:37,804 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-19 23:45:37,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-11-19 23:45:37,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-19 23:45:37,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-19 23:45:37,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-11-19 23:45:37,829 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-19 23:45:37,830 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-19 23:45:37,830 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-19 23:45:37,830 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-11-19 23:45:37,831 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-19 23:45:37,831 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:45:37,831 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:45:37,832 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-19 23:45:37,832 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 23:45:37,832 INFO L794 eck$LassoCheckResult]: Stem: 35#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 36#L13-1 [2019-11-19 23:45:37,832 INFO L796 eck$LassoCheckResult]: Loop: 36#L13-1 assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 32#L10 assume !(main_~i~0 > 0); 34#L10-2 assume main_~i~0 < 0;main_~i~0 := 1 + main_~i~0; 36#L13-1 [2019-11-19 23:45:37,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:45:37,833 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-11-19 23:45:37,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:45:37,834 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005664271] [2019-11-19 23:45:37,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:45:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:45:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:45:37,844 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:45:37,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:45:37,845 INFO L82 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 1 times [2019-11-19 23:45:37,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:45:37,846 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911850068] [2019-11-19 23:45:37,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:45:37,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:45:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:45:37,854 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:45:37,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:45:37,855 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 1 times [2019-11-19 23:45:37,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:45:37,855 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658980995] [2019-11-19 23:45:37,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:45:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:45:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:45:37,869 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:45:37,935 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:45:37,936 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:45:37,936 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:45:37,936 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:45:37,936 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 23:45:37,937 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:45:37,937 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:45:37,937 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:45:37,937 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex06.c_Iteration2_Loop [2019-11-19 23:45:37,937 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:45:37,938 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:45:37,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:45:37,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:45:37,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:45:38,066 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:45:38,067 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93fe24ff-6847-4472-94ba-a82690f6bdc6/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) [2019-11-19 23:45:38,079 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:45:38,080 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93fe24ff-6847-4472-94ba-a82690f6bdc6/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:45:38,091 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 23:45:38,091 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 23:45:38,099 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 23:45:38,101 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:45:38,102 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:45:38,102 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:45:38,102 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:45:38,102 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 23:45:38,102 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:45:38,102 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:45:38,102 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:45:38,102 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex06.c_Iteration2_Loop [2019-11-19 23:45:38,103 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:45:38,103 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:45:38,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:45:38,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:45:38,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:45:38,278 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:45:38,282 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93fe24ff-6847-4472-94ba-a82690f6bdc6/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:45:38,288 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:45:38,290 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:45:38,290 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:45:38,291 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:45:38,291 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:45:38,291 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:45:38,294 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:45:38,294 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:45:38,298 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 23:45:38,305 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 23:45:38,305 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93fe24ff-6847-4472-94ba-a82690f6bdc6/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) [2019-11-19 23:45:38,311 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 23:45:38,311 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 23:45:38,311 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 23:45:38,312 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-19 23:45:38,317 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:45:38,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:45:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:45:38,365 WARN L253 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 23:45:38,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:45:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:45:38,374 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 23:45:38,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:45:38,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:45:38,403 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-19 23:45:38,404 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 4 states. [2019-11-19 23:45:38,472 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 19 states and 26 transitions. Complement of second has 8 states. [2019-11-19 23:45:38,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-19 23:45:38,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-19 23:45:38,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2019-11-19 23:45:38,477 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 3 letters. [2019-11-19 23:45:38,478 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:45:38,478 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-19 23:45:38,478 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:45:38,479 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 6 letters. [2019-11-19 23:45:38,479 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:45:38,480 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 26 transitions. [2019-11-19 23:45:38,482 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-19 23:45:38,484 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 13 states and 17 transitions. [2019-11-19 23:45:38,485 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2019-11-19 23:45:38,486 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-19 23:45:38,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2019-11-19 23:45:38,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 23:45:38,486 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2019-11-19 23:45:38,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2019-11-19 23:45:38,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-19 23:45:38,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-19 23:45:38,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2019-11-19 23:45:38,490 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-19 23:45:38,490 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-19 23:45:38,491 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-19 23:45:38,491 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2019-11-19 23:45:38,493 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-19 23:45:38,493 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:45:38,493 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:45:38,494 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-19 23:45:38,494 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 23:45:38,494 INFO L794 eck$LassoCheckResult]: Stem: 99#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 100#L13-1 assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 104#L10 assume main_~i~0 > 0;main_~i~0 := main_~i~0 - 1; 106#L10-2 [2019-11-19 23:45:38,494 INFO L796 eck$LassoCheckResult]: Loop: 106#L10-2 assume !(main_~i~0 < 0); 101#L13-1 assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 102#L10 assume main_~i~0 > 0;main_~i~0 := main_~i~0 - 1; 106#L10-2 [2019-11-19 23:45:38,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:45:38,495 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-11-19 23:45:38,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:45:38,495 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014791840] [2019-11-19 23:45:38,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:45:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:45:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:45:38,517 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:45:38,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:45:38,518 INFO L82 PathProgramCache]: Analyzing trace with hash 50295, now seen corresponding path program 1 times [2019-11-19 23:45:38,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:45:38,518 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190568448] [2019-11-19 23:45:38,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:45:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:45:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:45:38,525 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:45:38,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:45:38,525 INFO L82 PathProgramCache]: Analyzing trace with hash 925775829, now seen corresponding path program 1 times [2019-11-19 23:45:38,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:45:38,526 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714008736] [2019-11-19 23:45:38,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:45:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:45:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:45:38,537 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:45:38,556 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:45:38,557 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:45:38,557 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:45:38,557 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:45:38,557 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 23:45:38,557 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:45:38,557 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:45:38,557 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:45:38,557 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex06.c_Iteration3_Loop [2019-11-19 23:45:38,558 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:45:38,558 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:45:38,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:45:38,562 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:45:38,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:45:38,622 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:45:38,623 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93fe24ff-6847-4472-94ba-a82690f6bdc6/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:45:38,627 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:45:38,627 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 23:45:38,632 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 23:45:38,632 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_93fe24ff-6847-4472-94ba-a82690f6bdc6/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:45:38,638 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:45:38,638 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 23:45:38,644 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 23:45:38,645 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_93fe24ff-6847-4472-94ba-a82690f6bdc6/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:45:38,662 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:45:38,662 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93fe24ff-6847-4472-94ba-a82690f6bdc6/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 [2019-11-19 23:45:38,670 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 23:45:38,670 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 23:45:38,680 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 23:45:38,683 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:45:38,683 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:45:38,683 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:45:38,683 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:45:38,683 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 23:45:38,684 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:45:38,684 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:45:38,684 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:45:38,684 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex06.c_Iteration3_Loop [2019-11-19 23:45:38,684 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:45:38,684 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:45:38,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:45:38,698 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:45:38,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:45:38,775 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:45:38,775 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93fe24ff-6847-4472-94ba-a82690f6bdc6/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) [2019-11-19 23:45:38,792 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:45:38,793 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:45:38,794 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:45:38,794 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:45:38,794 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:45:38,798 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:45:38,798 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:45:38,808 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93fe24ff-6847-4472-94ba-a82690f6bdc6/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:45:38,820 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:45:38,821 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:45:38,821 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:45:38,821 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:45:38,821 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:45:38,825 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:45:38,826 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-19 23:45:38,830 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93fe24ff-6847-4472-94ba-a82690f6bdc6/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 [2019-11-19 23:45:38,851 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:45:38,853 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:45:38,853 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:45:38,853 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:45:38,853 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:45:38,853 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:45:38,856 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:45:38,856 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:45:38,862 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 23:45:38,866 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 23:45:38,866 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93fe24ff-6847-4472-94ba-a82690f6bdc6/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 [2019-11-19 23:45:38,875 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 23:45:38,875 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 23:45:38,875 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 23:45:38,875 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-19 23:45:38,878 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 23:45:38,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:45:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:45:38,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 23:45:38,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:45:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:45:38,910 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 23:45:38,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:45:38,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:45:38,922 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-19 23:45:38,922 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-11-19 23:45:38,944 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 18 states and 24 transitions. Complement of second has 4 states. [2019-11-19 23:45:38,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-19 23:45:38,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 23:45:38,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2019-11-19 23:45:38,946 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2019-11-19 23:45:38,946 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:45:38,946 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-19 23:45:38,946 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:45:38,946 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-19 23:45:38,947 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:45:38,947 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2019-11-19 23:45:38,948 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-19 23:45:38,948 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 24 transitions. [2019-11-19 23:45:38,948 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-19 23:45:38,949 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-19 23:45:38,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2019-11-19 23:45:38,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 23:45:38,949 INFO L688 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2019-11-19 23:45:38,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2019-11-19 23:45:38,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 14. [2019-11-19 23:45:38,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-19 23:45:38,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2019-11-19 23:45:38,951 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-19 23:45:38,951 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-19 23:45:38,951 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-19 23:45:38,951 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2019-11-19 23:45:38,952 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-19 23:45:38,952 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:45:38,952 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:45:38,952 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-19 23:45:38,952 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 23:45:38,952 INFO L794 eck$LassoCheckResult]: Stem: 168#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 169#L13-1 assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 176#L10 assume !(main_~i~0 > 0); 164#L10-2 [2019-11-19 23:45:38,952 INFO L796 eck$LassoCheckResult]: Loop: 164#L10-2 assume !(main_~i~0 < 0); 170#L13-1 assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 163#L10 assume !(main_~i~0 > 0); 164#L10-2 [2019-11-19 23:45:38,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:45:38,953 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-11-19 23:45:38,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:45:38,953 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092465468] [2019-11-19 23:45:38,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:45:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:45:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:45:38,971 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:45:38,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:45:38,973 INFO L82 PathProgramCache]: Analyzing trace with hash 50297, now seen corresponding path program 1 times [2019-11-19 23:45:38,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:45:38,974 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752228455] [2019-11-19 23:45:38,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:45:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:45:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:45:38,988 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:45:38,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:45:38,989 INFO L82 PathProgramCache]: Analyzing trace with hash 925835413, now seen corresponding path program 1 times [2019-11-19 23:45:38,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:45:39,002 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444676466] [2019-11-19 23:45:39,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:45:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:45:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:45:39,010 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:45:39,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 11:45:39 BoogieIcfgContainer [2019-11-19 23:45:39,072 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-19 23:45:39,073 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 23:45:39,073 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 23:45:39,073 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 23:45:39,074 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:45:37" (3/4) ... [2019-11-19 23:45:39,077 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-19 23:45:39,112 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_93fe24ff-6847-4472-94ba-a82690f6bdc6/bin/uautomizer/witness.graphml [2019-11-19 23:45:39,113 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 23:45:39,115 INFO L168 Benchmark]: Toolchain (without parser) took 2310.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 944.7 MB in the beginning and 961.0 MB in the end (delta: -16.3 MB). Peak memory consumption was 125.8 MB. Max. memory is 11.5 GB. [2019-11-19 23:45:39,116 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:45:39,117 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -192.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-19 23:45:39,117 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:45:39,118 INFO L168 Benchmark]: Boogie Preprocessor took 20.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:45:39,118 INFO L168 Benchmark]: RCFGBuilder took 275.68 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-19 23:45:39,119 INFO L168 Benchmark]: BuchiAutomizer took 1699.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 961.0 MB in the end (delta: 157.6 MB). Peak memory consumption was 157.6 MB. Max. memory is 11.5 GB. [2019-11-19 23:45:39,120 INFO L168 Benchmark]: Witness Printer took 40.37 ms. Allocated memory is still 1.2 GB. Free memory is still 961.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:45:39,123 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 237.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -192.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 275.68 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1699.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 961.0 MB in the end (delta: 157.6 MB). Peak memory consumption was 157.6 MB. Max. memory is 11.5 GB. * Witness Printer took 40.37 ms. Allocated memory is still 1.2 GB. Free memory is still 961.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i and consists of 5 locations. One deterministic module has affine ranking function i and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 14 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. 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 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 14 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 19 SDtfs, 19 SDslu, 3 SDs, 0 SdLazy, 34 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax186 hnf100 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq143 hnf94 smp100 dnf100 smp100 tf110 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 32ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 13]: 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@a90106a=0, \result=0, i=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i >= -5 && i <= 5 [L10] COND FALSE !(i > 0) Loop: [L13] COND FALSE !(i < 0) [L9] COND TRUE i >= -5 && i <= 5 [L10] COND FALSE !(i > 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...