./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/NO_21.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4efafe38-4e65-4f8e-b95c-e6a757423f8e/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_4efafe38-4e65-4f8e-b95c-e6a757423f8e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4efafe38-4e65-4f8e-b95c-e6a757423f8e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4efafe38-4e65-4f8e-b95c-e6a757423f8e/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/NO_21.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4efafe38-4e65-4f8e-b95c-e6a757423f8e/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4efafe38-4e65-4f8e-b95c-e6a757423f8e/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 012f84fd0ea677a0f91b2a112c75e9cee95427f9 .................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 20:26:14,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 20:26:14,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 20:26:14,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 20:26:14,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 20:26:14,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 20:26:14,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 20:26:14,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 20:26:14,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 20:26:14,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 20:26:14,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 20:26:14,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 20:26:14,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 20:26:14,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 20:26:14,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 20:26:14,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 20:26:14,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 20:26:14,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 20:26:14,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 20:26:14,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 20:26:14,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 20:26:14,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 20:26:14,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 20:26:14,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 20:26:14,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 20:26:14,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 20:26:14,543 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 20:26:14,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 20:26:14,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 20:26:14,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 20:26:14,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 20:26:14,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 20:26:14,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 20:26:14,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 20:26:14,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 20:26:14,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 20:26:14,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 20:26:14,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 20:26:14,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 20:26:14,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 20:26:14,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 20:26:14,558 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4efafe38-4e65-4f8e-b95c-e6a757423f8e/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-15 20:26:14,578 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 20:26:14,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 20:26:14,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 20:26:14,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 20:26:14,581 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 20:26:14,581 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 20:26:14,581 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 20:26:14,581 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 20:26:14,581 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 20:26:14,582 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 20:26:14,583 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 20:26:14,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 20:26:14,583 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 20:26:14,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 20:26:14,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 20:26:14,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 20:26:14,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 20:26:14,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 20:26:14,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 20:26:14,585 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 20:26:14,585 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 20:26:14,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 20:26:14,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 20:26:14,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 20:26:14,586 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 20:26:14,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 20:26:14,586 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 20:26:14,586 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 20:26:14,589 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 20:26:14,590 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4efafe38-4e65-4f8e-b95c-e6a757423f8e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 012f84fd0ea677a0f91b2a112c75e9cee95427f9 [2019-11-15 20:26:14,618 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 20:26:14,628 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 20:26:14,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 20:26:14,632 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 20:26:14,632 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 20:26:14,633 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4efafe38-4e65-4f8e-b95c-e6a757423f8e/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/NO_21.c [2019-11-15 20:26:14,696 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4efafe38-4e65-4f8e-b95c-e6a757423f8e/bin/uautomizer/data/88ce186f1/278946cb29564b318be51271167dd2f5/FLAG08f25125d [2019-11-15 20:26:15,100 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 20:26:15,100 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4efafe38-4e65-4f8e-b95c-e6a757423f8e/sv-benchmarks/c/termination-restricted-15/NO_21.c [2019-11-15 20:26:15,107 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4efafe38-4e65-4f8e-b95c-e6a757423f8e/bin/uautomizer/data/88ce186f1/278946cb29564b318be51271167dd2f5/FLAG08f25125d [2019-11-15 20:26:15,121 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4efafe38-4e65-4f8e-b95c-e6a757423f8e/bin/uautomizer/data/88ce186f1/278946cb29564b318be51271167dd2f5 [2019-11-15 20:26:15,124 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 20:26:15,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 20:26:15,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 20:26:15,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 20:26:15,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 20:26:15,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:26:15" (1/1) ... [2019-11-15 20:26:15,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c108e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:15, skipping insertion in model container [2019-11-15 20:26:15,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:26:15" (1/1) ... [2019-11-15 20:26:15,143 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 20:26:15,158 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 20:26:15,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:26:15,328 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 20:26:15,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:26:15,415 INFO L192 MainTranslator]: Completed translation [2019-11-15 20:26:15,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:15 WrapperNode [2019-11-15 20:26:15,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 20:26:15,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 20:26:15,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 20:26:15,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 20:26:15,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:15" (1/1) ... [2019-11-15 20:26:15,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:15" (1/1) ... [2019-11-15 20:26:15,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 20:26:15,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 20:26:15,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 20:26:15,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 20:26:15,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:15" (1/1) ... [2019-11-15 20:26:15,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:15" (1/1) ... [2019-11-15 20:26:15,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:15" (1/1) ... [2019-11-15 20:26:15,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:15" (1/1) ... [2019-11-15 20:26:15,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:15" (1/1) ... [2019-11-15 20:26:15,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:15" (1/1) ... [2019-11-15 20:26:15,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:15" (1/1) ... [2019-11-15 20:26:15,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 20:26:15,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 20:26:15,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 20:26:15,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 20:26:15,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4efafe38-4e65-4f8e-b95c-e6a757423f8e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:26:15,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 20:26:15,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 20:26:15,676 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 20:26:15,677 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-15 20:26:15,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:26:15 BoogieIcfgContainer [2019-11-15 20:26:15,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 20:26:15,679 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 20:26:15,679 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 20:26:15,683 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 20:26:15,683 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 20:26:15,684 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 08:26:15" (1/3) ... [2019-11-15 20:26:15,685 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b8311a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 08:26:15, skipping insertion in model container [2019-11-15 20:26:15,685 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 20:26:15,685 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:15" (2/3) ... [2019-11-15 20:26:15,688 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b8311a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 08:26:15, skipping insertion in model container [2019-11-15 20:26:15,688 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 20:26:15,688 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:26:15" (3/3) ... [2019-11-15 20:26:15,689 INFO L371 chiAutomizerObserver]: Analyzing ICFG NO_21.c [2019-11-15 20:26:15,743 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 20:26:15,744 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 20:26:15,744 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 20:26:15,744 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 20:26:15,744 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 20:26:15,744 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 20:26:15,745 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 20:26:15,745 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 20:26:15,760 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2019-11-15 20:26:15,778 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-15 20:26:15,779 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 20:26:15,779 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 20:26:15,785 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 20:26:15,785 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-15 20:26:15,785 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 20:26:15,785 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2019-11-15 20:26:15,786 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-15 20:26:15,786 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 20:26:15,786 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 20:26:15,787 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 20:26:15,787 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-15 20:26:15,794 INFO L791 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0;havoc main_~i~0;main_~i~0 := 0; 5#L9-2true [2019-11-15 20:26:15,794 INFO L793 eck$LassoCheckResult]: Loop: 5#L9-2true assume !!(main_~i~0 < 100);main_~i~0 := 1 + main_~i~0;main_~i~0 := main_~i~0 - 1; 5#L9-2true [2019-11-15 20:26:15,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:26:15,801 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-15 20:26:15,807 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:26:15,808 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871235923] [2019-11-15 20:26:15,808 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:26:15,808 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:26:15,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:26:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:26:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:26:15,891 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:26:15,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:26:15,892 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2019-11-15 20:26:15,892 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:26:15,893 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303095950] [2019-11-15 20:26:15,893 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:26:15,893 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:26:15,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:26:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:26:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:26:15,902 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:26:15,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:26:15,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-15 20:26:15,904 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:26:15,904 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514355284] [2019-11-15 20:26:15,904 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:26:15,904 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:26:15,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:26:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:26:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:26:15,915 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:26:15,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.11 08:26:15 BoogieIcfgContainer [2019-11-15 20:26:15,984 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-15 20:26:15,985 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 20:26:15,985 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 20:26:15,985 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 20:26:15,985 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:26:15" (3/4) ... [2019-11-15 20:26:15,996 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-15 20:26:16,048 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4efafe38-4e65-4f8e-b95c-e6a757423f8e/bin/uautomizer/witness.graphml [2019-11-15 20:26:16,048 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 20:26:16,050 INFO L168 Benchmark]: Toolchain (without parser) took 922.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -173.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:26:16,051 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:26:16,052 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -212.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-15 20:26:16,052 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:26:16,053 INFO L168 Benchmark]: Boogie Preprocessor took 17.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:26:16,053 INFO L168 Benchmark]: RCFGBuilder took 207.49 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: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. [2019-11-15 20:26:16,054 INFO L168 Benchmark]: BuchiAutomizer took 305.72 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: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2019-11-15 20:26:16,055 INFO L168 Benchmark]: Witness Printer took 63.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:26:16,061 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 287.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -212.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 207.49 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: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 305.72 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: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * Witness Printer took 63.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 9]: 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 {\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 = 0 Loop: [L9] COND TRUE i < 100 [L10] i = i+1 [L11] i = i-1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...