./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Ex07_false-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_72ca0ffe-639a-4dbd-9583-9bffc5eff966/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_72ca0ffe-639a-4dbd-9583-9bffc5eff966/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_72ca0ffe-639a-4dbd-9583-9bffc5eff966/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_72ca0ffe-639a-4dbd-9583-9bffc5eff966/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Ex07_false-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_72ca0ffe-639a-4dbd-9583-9bffc5eff966/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_72ca0ffe-639a-4dbd-9583-9bffc5eff966/bin-2019/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 f77d0d21d7cb1d6a29608eb65655982c4edaf4ed ........................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-1dbac8b [2018-11-10 07:20:46,273 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 07:20:46,274 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 07:20:46,282 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 07:20:46,282 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 07:20:46,283 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 07:20:46,284 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 07:20:46,285 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 07:20:46,286 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 07:20:46,287 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 07:20:46,288 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 07:20:46,288 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 07:20:46,288 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 07:20:46,289 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 07:20:46,290 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 07:20:46,291 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 07:20:46,291 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 07:20:46,292 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 07:20:46,294 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 07:20:46,295 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 07:20:46,296 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 07:20:46,296 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 07:20:46,298 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 07:20:46,298 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 07:20:46,299 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 07:20:46,299 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 07:20:46,300 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 07:20:46,301 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 07:20:46,301 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 07:20:46,302 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 07:20:46,302 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 07:20:46,303 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 07:20:46,303 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 07:20:46,303 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 07:20:46,304 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 07:20:46,304 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 07:20:46,304 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_72ca0ffe-639a-4dbd-9583-9bffc5eff966/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-10 07:20:46,315 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 07:20:46,315 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 07:20:46,316 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 07:20:46,317 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 07:20:46,317 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 07:20:46,317 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-10 07:20:46,317 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-10 07:20:46,317 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-10 07:20:46,317 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-10 07:20:46,318 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-10 07:20:46,318 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-10 07:20:46,318 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 07:20:46,318 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 07:20:46,318 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 07:20:46,318 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 07:20:46,318 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-10 07:20:46,319 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-10 07:20:46,319 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-10 07:20:46,319 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 07:20:46,319 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-10 07:20:46,319 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-10 07:20:46,319 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 07:20:46,320 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 07:20:46,320 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-10 07:20:46,320 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 07:20:46,320 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 07:20:46,320 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-10 07:20:46,321 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-10 07:20:46,321 INFO L133 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_72ca0ffe-639a-4dbd-9583-9bffc5eff966/bin-2019/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 -> f77d0d21d7cb1d6a29608eb65655982c4edaf4ed [2018-11-10 07:20:46,344 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 07:20:46,353 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 07:20:46,356 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 07:20:46,357 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 07:20:46,357 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 07:20:46,358 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_72ca0ffe-639a-4dbd-9583-9bffc5eff966/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/Ex07_false-termination_true-no-overflow.c [2018-11-10 07:20:46,401 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_72ca0ffe-639a-4dbd-9583-9bffc5eff966/bin-2019/uautomizer/data/9de7c00a6/4439e98c048c404b8a2c5f3d9d35d017/FLAGb91627cff [2018-11-10 07:20:46,806 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 07:20:46,807 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_72ca0ffe-639a-4dbd-9583-9bffc5eff966/sv-benchmarks/c/termination-restricted-15/Ex07_false-termination_true-no-overflow.c [2018-11-10 07:20:46,810 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_72ca0ffe-639a-4dbd-9583-9bffc5eff966/bin-2019/uautomizer/data/9de7c00a6/4439e98c048c404b8a2c5f3d9d35d017/FLAGb91627cff [2018-11-10 07:20:46,819 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_72ca0ffe-639a-4dbd-9583-9bffc5eff966/bin-2019/uautomizer/data/9de7c00a6/4439e98c048c404b8a2c5f3d9d35d017 [2018-11-10 07:20:46,821 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 07:20:46,821 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 07:20:46,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 07:20:46,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 07:20:46,824 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 07:20:46,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:20:46" (1/1) ... [2018-11-10 07:20:46,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30094b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:46, skipping insertion in model container [2018-11-10 07:20:46,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:20:46" (1/1) ... [2018-11-10 07:20:46,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 07:20:46,847 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 07:20:46,960 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:20:46,963 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 07:20:46,971 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:20:46,979 INFO L193 MainTranslator]: Completed translation [2018-11-10 07:20:46,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:46 WrapperNode [2018-11-10 07:20:46,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 07:20:46,980 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 07:20:46,980 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 07:20:46,980 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 07:20:46,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:46" (1/1) ... [2018-11-10 07:20:46,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:46" (1/1) ... [2018-11-10 07:20:46,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 07:20:46,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 07:20:46,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 07:20:46,999 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 07:20:47,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:46" (1/1) ... [2018-11-10 07:20:47,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:46" (1/1) ... [2018-11-10 07:20:47,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:46" (1/1) ... [2018-11-10 07:20:47,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:46" (1/1) ... [2018-11-10 07:20:47,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:46" (1/1) ... [2018-11-10 07:20:47,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:46" (1/1) ... [2018-11-10 07:20:47,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:46" (1/1) ... [2018-11-10 07:20:47,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 07:20:47,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 07:20:47,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 07:20:47,011 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 07:20:47,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72ca0ffe-639a-4dbd-9583-9bffc5eff966/bin-2019/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 [2018-11-10 07:20:47,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 07:20:47,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 07:20:47,162 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 07:20:47,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:20:47 BoogieIcfgContainer [2018-11-10 07:20:47,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 07:20:47,163 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-10 07:20:47,163 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-10 07:20:47,166 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-10 07:20:47,166 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 07:20:47,166 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.11 07:20:46" (1/3) ... [2018-11-10 07:20:47,167 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1f00f1e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 07:20:47, skipping insertion in model container [2018-11-10 07:20:47,167 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 07:20:47,167 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:46" (2/3) ... [2018-11-10 07:20:47,167 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1f00f1e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 07:20:47, skipping insertion in model container [2018-11-10 07:20:47,167 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 07:20:47,168 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:20:47" (3/3) ... [2018-11-10 07:20:47,169 INFO L375 chiAutomizerObserver]: Analyzing ICFG Ex07_false-termination_true-no-overflow.c [2018-11-10 07:20:47,201 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 07:20:47,201 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-10 07:20:47,202 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-10 07:20:47,202 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-10 07:20:47,202 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 07:20:47,202 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 07:20:47,202 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-10 07:20:47,202 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 07:20:47,202 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-10 07:20:47,210 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-11-10 07:20:47,223 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 07:20:47,223 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:20:47,223 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:20:47,228 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 07:20:47,228 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 07:20:47,228 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-10 07:20:47,228 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-11-10 07:20:47,228 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 07:20:47,229 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:20:47,229 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:20:47,229 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 07:20:47,229 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 07:20:47,233 INFO L793 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 7#L13-1true [2018-11-10 07:20:47,234 INFO L795 eck$LassoCheckResult]: Loop: 7#L13-1true assume true; 10#L9-1true assume !!(~unnamed0~0~true != 0); 4#L10true assume !(main_~i~0 > 0); 11#L10-2true assume main_~i~0 < 0;main_~i~0 := main_~i~0 + 1; 7#L13-1true [2018-11-10 07:20:47,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:20:47,237 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-10 07:20:47,238 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:20:47,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:20:47,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:20:47,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:20:47,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:20:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:20:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:20:47,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:20:47,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1114347, now seen corresponding path program 1 times [2018-11-10 07:20:47,293 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:20:47,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:20:47,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:20:47,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:20:47,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:20:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:20:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:20:47,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:20:47,303 INFO L82 PathProgramCache]: Analyzing trace with hash 889541549, now seen corresponding path program 1 times [2018-11-10 07:20:47,303 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:20:47,304 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:20:47,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:20:47,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:20:47,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:20:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:20:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:20:47,359 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:20:47,360 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:20:47,360 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:20:47,360 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:20:47,360 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 07:20:47,360 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:20:47,361 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:20:47,361 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:20:47,361 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ex07_false-termination_true-no-overflow.c_Iteration1_Loop [2018-11-10 07:20:47,361 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:20:47,361 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:20:47,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:20:47,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:20:47,395 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:20:47,457 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:20:47,457 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72ca0ffe-639a-4dbd-9583-9bffc5eff966/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:20:47,468 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:20:47,468 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:20:47,490 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 07:20:47,490 INFO L446 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_72ca0ffe-639a-4dbd-9583-9bffc5eff966/bin-2019/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 [2018-11-10 07:20:47,498 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:20:47,498 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:20:47,526 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 07:20:47,526 INFO L446 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_72ca0ffe-639a-4dbd-9583-9bffc5eff966/bin-2019/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 [2018-11-10 07:20:47,529 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:20:47,529 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72ca0ffe-639a-4dbd-9583-9bffc5eff966/bin-2019/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 [2018-11-10 07:20:47,551 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 07:20:47,551 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:20:47,570 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 07:20:47,571 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:20:47,571 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:20:47,571 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:20:47,571 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:20:47,571 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 07:20:47,571 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:20:47,571 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:20:47,571 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:20:47,571 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ex07_false-termination_true-no-overflow.c_Iteration1_Loop [2018-11-10 07:20:47,572 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:20:47,572 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:20:47,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:20:47,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:20:47,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:20:47,642 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:20:47,645 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 07:20:47,646 INFO L122 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 [2018-11-10 07:20:47,647 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:20:47,648 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:20:47,648 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:20:47,648 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:20:47,651 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 07:20:47,651 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 07:20:47,657 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 07:20:47,658 INFO L122 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 [2018-11-10 07:20:47,658 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:20:47,658 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:20:47,658 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:20:47,659 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:20:47,661 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 07:20:47,661 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 07:20:47,670 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 07:20:47,670 INFO L122 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 [2018-11-10 07:20:47,671 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:20:47,671 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 07:20:47,672 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:20:47,672 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:20:47,672 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:20:47,673 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 07:20:47,673 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 07:20:47,678 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 07:20:47,682 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 07:20:47,682 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 07:20:47,684 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 07:20:47,684 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 07:20:47,684 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 07:20:47,685 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-10 07:20:47,686 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 07:20:47,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:20:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:20:47,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:20:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:20:47,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:20:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:20:47,782 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 [2018-11-10 07:20:47,784 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 4 states. [2018-11-10 07:20:47,822 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 4 states. Result 32 states and 48 transitions. Complement of second has 8 states. [2018-11-10 07:20:47,823 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 [2018-11-10 07:20:47,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 07:20:47,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2018-11-10 07:20:47,826 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 2 letters. Loop has 4 letters. [2018-11-10 07:20:47,827 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:20:47,828 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 6 letters. Loop has 4 letters. [2018-11-10 07:20:47,828 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:20:47,828 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 2 letters. Loop has 8 letters. [2018-11-10 07:20:47,828 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:20:47,829 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 48 transitions. [2018-11-10 07:20:47,830 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-10 07:20:47,833 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 20 states and 26 transitions. [2018-11-10 07:20:47,834 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2018-11-10 07:20:47,834 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-11-10 07:20:47,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2018-11-10 07:20:47,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 07:20:47,835 INFO L705 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2018-11-10 07:20:47,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2018-11-10 07:20:47,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2018-11-10 07:20:47,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-10 07:20:47,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2018-11-10 07:20:47,855 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2018-11-10 07:20:47,855 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2018-11-10 07:20:47,855 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-10 07:20:47,855 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 24 transitions. [2018-11-10 07:20:47,855 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-10 07:20:47,856 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:20:47,856 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:20:47,856 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-10 07:20:47,856 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 07:20:47,856 INFO L793 eck$LassoCheckResult]: Stem: 94#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 88#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 89#L13-1 assume true; 101#L9-1 assume !!(~unnamed0~0~true != 0); 102#L10 assume !(main_~i~0 > 0); 91#L10-2 [2018-11-10 07:20:47,856 INFO L795 eck$LassoCheckResult]: Loop: 91#L10-2 assume !(main_~i~0 < 0); 99#L13-1 assume true; 104#L9-1 assume !!(~unnamed0~0~true != 0); 90#L10 assume !(main_~i~0 > 0); 91#L10-2 [2018-11-10 07:20:47,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:20:47,856 INFO L82 PathProgramCache]: Analyzing trace with hash 28694888, now seen corresponding path program 1 times [2018-11-10 07:20:47,857 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:20:47,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:20:47,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:20:47,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:20:47,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:20:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:20:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:20:47,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:20:47,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1614869, now seen corresponding path program 1 times [2018-11-10 07:20:47,862 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:20:47,862 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:20:47,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:20:47,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:20:47,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:20:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:20:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:20:47,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:20:47,867 INFO L82 PathProgramCache]: Analyzing trace with hash 384135676, now seen corresponding path program 1 times [2018-11-10 07:20:47,867 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:20:47,867 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:20:47,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:20:47,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:20:47,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:20:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:20:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:20:47,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.11 07:20:47 BoogieIcfgContainer [2018-11-10 07:20:47,911 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-10 07:20:47,911 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 07:20:47,911 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 07:20:47,911 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 07:20:47,912 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:20:47" (3/4) ... [2018-11-10 07:20:47,914 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-11-10 07:20:47,937 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_72ca0ffe-639a-4dbd-9583-9bffc5eff966/bin-2019/uautomizer/witness.graphml [2018-11-10 07:20:47,937 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 07:20:47,938 INFO L168 Benchmark]: Toolchain (without parser) took 1116.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 960.2 MB in the beginning and 1.0 GB in the end (delta: -59.7 MB). Peak memory consumption was 62.9 MB. Max. memory is 11.5 GB. [2018-11-10 07:20:47,939 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:20:47,939 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.64 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-10 07:20:47,939 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.61 ms. Allocated memory is still 1.0 GB. Free memory is still 949.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:20:47,940 INFO L168 Benchmark]: Boogie Preprocessor took 11.41 ms. Allocated memory is still 1.0 GB. Free memory was 949.4 MB in the beginning and 946.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 07:20:47,940 INFO L168 Benchmark]: RCFGBuilder took 152.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 946.7 MB in the beginning and 1.1 GB in the end (delta: -165.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2018-11-10 07:20:47,941 INFO L168 Benchmark]: BuchiAutomizer took 747.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 88.5 MB). Peak memory consumption was 88.5 MB. Max. memory is 11.5 GB. [2018-11-10 07:20:47,941 INFO L168 Benchmark]: Witness Printer took 25.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-10 07:20:47,944 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 157.64 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.61 ms. Allocated memory is still 1.0 GB. Free memory is still 949.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.41 ms. Allocated memory is still 1.0 GB. Free memory was 949.4 MB in the beginning and 946.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 152.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 946.7 MB in the beginning and 1.1 GB in the end (delta: -165.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 747.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 88.5 MB). Peak memory consumption was 88.5 MB. Max. memory is 11.5 GB. * Witness Printer took 25.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 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 * i and consists of 5 locations. The remainder module has 18 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.7s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 18 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 6 SDtfs, 8 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: inital10 mio100 ax220 hnf100 lsp45 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - 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@469919ea=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 \read(true) [L10] COND FALSE !(i > 0) Loop: [L13] COND FALSE !(i < 0) [L9] COND TRUE \read(true) [L10] COND FALSE !(i > 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...