./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 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a62edba4-9940-482e-8037-a1ceb81090f3/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a62edba4-9940-482e-8037-a1ceb81090f3/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a62edba4-9940-482e-8037-a1ceb81090f3/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a62edba4-9940-482e-8037-a1ceb81090f3/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_a62edba4-9940-482e-8037-a1ceb81090f3/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a62edba4-9940-482e-8037-a1ceb81090f3/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 0.1.23-5842f4b [2018-11-18 13:39:52,650 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:39:52,651 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:39:52,658 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:39:52,658 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:39:52,659 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:39:52,660 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:39:52,661 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:39:52,662 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:39:52,662 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:39:52,663 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:39:52,663 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:39:52,664 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:39:52,665 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:39:52,665 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:39:52,666 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:39:52,667 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:39:52,668 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:39:52,669 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:39:52,670 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:39:52,671 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:39:52,671 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:39:52,673 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:39:52,673 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:39:52,673 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:39:52,674 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:39:52,675 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:39:52,675 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:39:52,676 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:39:52,676 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:39:52,677 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:39:52,677 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:39:52,677 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:39:52,677 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:39:52,678 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:39:52,678 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:39:52,679 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a62edba4-9940-482e-8037-a1ceb81090f3/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-18 13:39:52,688 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:39:52,688 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:39:52,689 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 13:39:52,689 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 13:39:52,689 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 13:39:52,689 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 13:39:52,690 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 13:39:52,690 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 13:39:52,690 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 13:39:52,690 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 13:39:52,690 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 13:39:52,690 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:39:52,690 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 13:39:52,690 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 13:39:52,691 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:39:52,691 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 13:39:52,691 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 13:39:52,691 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 13:39:52,691 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:39:52,691 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 13:39:52,691 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:39:52,691 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 13:39:52,692 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:39:52,692 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:39:52,692 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 13:39:52,692 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:39:52,692 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 13:39:52,692 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 13:39:52,693 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 13:39:52,693 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_a62edba4-9940-482e-8037-a1ceb81090f3/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 [2018-11-18 13:39:52,715 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:39:52,724 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:39:52,726 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:39:52,727 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:39:52,727 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:39:52,728 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a62edba4-9940-482e-8037-a1ceb81090f3/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/Ex07_false-termination_true-no-overflow.c [2018-11-18 13:39:52,763 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a62edba4-9940-482e-8037-a1ceb81090f3/bin-2019/uautomizer/data/894faf006/c6f77f03afbe4d2da6722bba55519727/FLAGea5dfb666 [2018-11-18 13:39:53,172 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:39:53,173 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a62edba4-9940-482e-8037-a1ceb81090f3/sv-benchmarks/c/termination-restricted-15/Ex07_false-termination_true-no-overflow.c [2018-11-18 13:39:53,178 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a62edba4-9940-482e-8037-a1ceb81090f3/bin-2019/uautomizer/data/894faf006/c6f77f03afbe4d2da6722bba55519727/FLAGea5dfb666 [2018-11-18 13:39:53,188 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a62edba4-9940-482e-8037-a1ceb81090f3/bin-2019/uautomizer/data/894faf006/c6f77f03afbe4d2da6722bba55519727 [2018-11-18 13:39:53,190 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:39:53,191 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 13:39:53,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:39:53,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:39:53,194 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:39:53,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:39:53" (1/1) ... [2018-11-18 13:39:53,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@399b9200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:39:53, skipping insertion in model container [2018-11-18 13:39:53,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:39:53" (1/1) ... [2018-11-18 13:39:53,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:39:53,213 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:39:53,319 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:39:53,321 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:39:53,329 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:39:53,339 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:39:53,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:39:53 WrapperNode [2018-11-18 13:39:53,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:39:53,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 13:39:53,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 13:39:53,340 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 13:39:53,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:39:53" (1/1) ... [2018-11-18 13:39:53,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:39:53" (1/1) ... [2018-11-18 13:39:53,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 13:39:53,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:39:53,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:39:53,361 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:39:53,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:39:53" (1/1) ... [2018-11-18 13:39:53,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:39:53" (1/1) ... [2018-11-18 13:39:53,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:39:53" (1/1) ... [2018-11-18 13:39:53,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:39:53" (1/1) ... [2018-11-18 13:39:53,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:39:53" (1/1) ... [2018-11-18 13:39:53,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:39:53" (1/1) ... [2018-11-18 13:39:53,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:39:53" (1/1) ... [2018-11-18 13:39:53,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:39:53,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:39:53,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:39:53,374 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:39:53,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:39:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a62edba4-9940-482e-8037-a1ceb81090f3/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 [2018-11-18 13:39:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:39:53,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:39:53,513 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:39:53,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:39:53 BoogieIcfgContainer [2018-11-18 13:39:53,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:39:53,514 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 13:39:53,514 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 13:39:53,516 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 13:39:53,517 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 13:39:53,517 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 01:39:53" (1/3) ... [2018-11-18 13:39:53,517 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3b516077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 01:39:53, skipping insertion in model container [2018-11-18 13:39:53,517 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 13:39:53,518 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:39:53" (2/3) ... [2018-11-18 13:39:53,518 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3b516077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 01:39:53, skipping insertion in model container [2018-11-18 13:39:53,518 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 13:39:53,518 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:39:53" (3/3) ... [2018-11-18 13:39:53,519 INFO L375 chiAutomizerObserver]: Analyzing ICFG Ex07_false-termination_true-no-overflow.c [2018-11-18 13:39:53,551 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 13:39:53,552 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 13:39:53,552 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 13:39:53,552 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 13:39:53,552 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:39:53,552 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:39:53,552 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 13:39:53,552 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:39:53,552 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 13:39:53,560 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-11-18 13:39:53,572 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 13:39:53,573 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 13:39:53,573 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 13:39:53,577 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 13:39:53,577 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 13:39:53,577 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 13:39:53,577 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-11-18 13:39:53,577 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 13:39:53,577 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 13:39:53,578 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 13:39:53,578 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 13:39:53,578 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 13:39:53,582 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 7#L13-1true [2018-11-18 13:39:53,582 INFO L796 eck$LassoCheckResult]: Loop: 7#L13-1true assume true; 10#L9-1true assume !!(0 != ~unnamed0~0~true); 4#L10true assume !(main_~i~0 > 0); 11#L10-2true assume main_~i~0 < 0;main_~i~0 := 1 + main_~i~0; 7#L13-1true [2018-11-18 13:39:53,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:39:53,586 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-18 13:39:53,587 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:39:53,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:39:53,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:39:53,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:39:53,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:39:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:39:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:39:53,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:39:53,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1114347, now seen corresponding path program 1 times [2018-11-18 13:39:53,642 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:39:53,642 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:39:53,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:39:53,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:39:53,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:39:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:39:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:39:53,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:39:53,651 INFO L82 PathProgramCache]: Analyzing trace with hash 889541549, now seen corresponding path program 1 times [2018-11-18 13:39:53,651 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:39:53,651 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:39:53,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:39:53,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:39:53,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:39:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:39:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:39:53,714 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 13:39:53,715 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 13:39:53,715 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 13:39:53,715 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 13:39:53,715 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 13:39:53,716 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:39:53,716 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 13:39:53,716 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 13:39:53,716 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ex07_false-termination_true-no-overflow.c_Iteration1_Loop [2018-11-18 13:39:53,716 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 13:39:53,716 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 13:39:53,735 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:39:53,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:39:53,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:39:53,850 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 13:39:53,851 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a62edba4-9940-482e-8037-a1ceb81090f3/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 [2018-11-18 13:39:53,854 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:39:53,854 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:39:53,877 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 13:39:53,877 INFO L448 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_a62edba4-9940-482e-8037-a1ceb81090f3/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 [2018-11-18 13:39:53,882 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:39:53,883 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:39:53,908 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 13:39:53,908 INFO L448 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_a62edba4-9940-482e-8037-a1ceb81090f3/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 [2018-11-18 13:39:53,914 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:39:53,914 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a62edba4-9940-482e-8037-a1ceb81090f3/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 [2018-11-18 13:39:53,944 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 13:39:53,944 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:39:53,962 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 13:39:53,963 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 13:39:53,963 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 13:39:53,963 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 13:39:53,963 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 13:39:53,963 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 13:39:53,963 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:39:53,963 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 13:39:53,963 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 13:39:53,963 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ex07_false-termination_true-no-overflow.c_Iteration1_Loop [2018-11-18 13:39:53,964 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 13:39:53,964 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 13:39:53,965 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:39:53,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:39:53,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:39:54,020 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 13:39:54,023 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 13:39:54,024 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 [2018-11-18 13:39:54,025 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:39:54,026 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:39:54,026 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:39:54,026 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:39:54,030 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 13:39:54,030 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 13:39:54,037 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 13:39:54,037 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 [2018-11-18 13:39:54,038 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:39:54,038 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:39:54,038 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:39:54,038 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:39:54,040 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 13:39:54,040 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 13:39:54,048 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 13:39:54,049 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 [2018-11-18 13:39:54,049 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:39:54,050 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 13:39:54,050 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:39:54,051 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:39:54,051 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:39:54,051 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 13:39:54,051 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 13:39:54,057 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 13:39:54,060 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 13:39:54,060 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 13:39:54,062 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 13:39:54,062 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 13:39:54,062 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 13:39:54,063 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-18 13:39:54,063 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 13:39:54,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:39:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:39:54,114 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:39:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:39:54,122 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:39:54,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:39:54,139 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 [2018-11-18 13:39:54,140 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 4 states. [2018-11-18 13:39:54,182 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. [2018-11-18 13:39:54,183 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 [2018-11-18 13:39:54,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 13:39:54,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2018-11-18 13:39:54,186 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 2 letters. Loop has 4 letters. [2018-11-18 13:39:54,187 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:39:54,187 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 6 letters. Loop has 4 letters. [2018-11-18 13:39:54,188 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:39:54,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 2 letters. Loop has 8 letters. [2018-11-18 13:39:54,188 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:39:54,189 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 48 transitions. [2018-11-18 13:39:54,191 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-18 13:39:54,194 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 20 states and 26 transitions. [2018-11-18 13:39:54,195 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2018-11-18 13:39:54,196 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-11-18 13:39:54,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2018-11-18 13:39:54,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 13:39:54,197 INFO L705 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2018-11-18 13:39:54,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2018-11-18 13:39:54,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2018-11-18 13:39:54,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-18 13:39:54,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2018-11-18 13:39:54,218 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2018-11-18 13:39:54,218 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2018-11-18 13:39:54,218 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 13:39:54,218 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 24 transitions. [2018-11-18 13:39:54,219 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-18 13:39:54,219 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 13:39:54,219 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 13:39:54,219 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-18 13:39:54,219 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 13:39:54,219 INFO L794 eck$LassoCheckResult]: Stem: 94#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 88#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 89#L13-1 assume true; 101#L9-1 assume !!(0 != ~unnamed0~0~true); 102#L10 assume !(main_~i~0 > 0); 91#L10-2 [2018-11-18 13:39:54,220 INFO L796 eck$LassoCheckResult]: Loop: 91#L10-2 assume !(main_~i~0 < 0); 99#L13-1 assume true; 104#L9-1 assume !!(0 != ~unnamed0~0~true); 90#L10 assume !(main_~i~0 > 0); 91#L10-2 [2018-11-18 13:39:54,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:39:54,220 INFO L82 PathProgramCache]: Analyzing trace with hash 28694888, now seen corresponding path program 1 times [2018-11-18 13:39:54,220 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:39:54,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:39:54,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:39:54,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:39:54,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:39:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:39:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:39:54,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:39:54,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1614869, now seen corresponding path program 1 times [2018-11-18 13:39:54,224 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:39:54,225 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:39:54,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:39:54,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:39:54,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:39:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:39:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:39:54,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:39:54,230 INFO L82 PathProgramCache]: Analyzing trace with hash 384135676, now seen corresponding path program 1 times [2018-11-18 13:39:54,230 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:39:54,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:39:54,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:39:54,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:39:54,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:39:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:39:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:39:54,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 01:39:54 BoogieIcfgContainer [2018-11-18 13:39:54,281 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 13:39:54,281 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:39:54,281 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:39:54,282 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:39:54,282 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:39:53" (3/4) ... [2018-11-18 13:39:54,284 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-11-18 13:39:54,308 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a62edba4-9940-482e-8037-a1ceb81090f3/bin-2019/uautomizer/witness.graphml [2018-11-18 13:39:54,308 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:39:54,309 INFO L168 Benchmark]: Toolchain (without parser) took 1118.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 189.8 MB). Free memory was 958.1 MB in the beginning and 1.1 GB in the end (delta: -125.6 MB). Peak memory consumption was 64.2 MB. Max. memory is 11.5 GB. [2018-11-18 13:39:54,310 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:39:54,310 INFO L168 Benchmark]: CACSL2BoogieTranslator took 148.05 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:39:54,311 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.79 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:39:54,311 INFO L168 Benchmark]: Boogie Preprocessor took 12.66 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:39:54,312 INFO L168 Benchmark]: RCFGBuilder took 140.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 189.8 MB). Free memory was 944.6 MB in the beginning and 1.2 GB in the end (delta: -230.0 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-18 13:39:54,312 INFO L168 Benchmark]: BuchiAutomizer took 767.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 87.9 MB). Peak memory consumption was 87.9 MB. Max. memory is 11.5 GB. [2018-11-18 13:39:54,313 INFO L168 Benchmark]: Witness Printer took 26.74 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: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2018-11-18 13:39:54,316 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 148.05 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.79 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.66 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 140.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 189.8 MB). Free memory was 944.6 MB in the beginning and 1.2 GB in the end (delta: -230.0 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 767.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 87.9 MB). Peak memory consumption was 87.9 MB. Max. memory is 11.5 GB. * Witness Printer took 26.74 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: 3.2 MB). Peak memory consumption was 3.2 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 0.0s. 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@6ce128d7=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...