./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Loop-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_336bd7bd-8fa9-4503-b731-068057c90218/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_336bd7bd-8fa9-4503-b731-068057c90218/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_336bd7bd-8fa9-4503-b731-068057c90218/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_336bd7bd-8fa9-4503-b731-068057c90218/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Loop-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_336bd7bd-8fa9-4503-b731-068057c90218/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_336bd7bd-8fa9-4503-b731-068057c90218/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 079a94391776bb57925fadb38be78dd5e66e0a82 ............................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-29 23:33:45,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:33:45,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:33:45,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:33:45,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:33:45,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:33:45,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:33:45,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:33:45,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:33:45,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:33:45,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:33:45,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:33:45,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:33:45,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:33:45,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:33:45,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:33:45,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:33:45,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:33:45,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:33:45,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:33:45,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:33:45,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:33:45,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:33:45,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:33:45,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:33:45,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:33:45,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:33:45,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:33:45,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:33:45,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:33:45,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:33:45,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:33:45,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:33:45,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:33:45,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:33:45,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:33:45,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:33:45,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:33:45,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:33:45,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:33:45,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:33:45,684 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_336bd7bd-8fa9-4503-b731-068057c90218/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 23:33:45,710 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:33:45,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:33:45,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:33:45,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:33:45,713 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:33:45,713 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 23:33:45,714 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 23:33:45,714 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 23:33:45,714 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 23:33:45,715 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 23:33:45,715 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 23:33:45,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:33:45,716 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:33:45,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:33:45,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:33:45,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 23:33:45,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 23:33:45,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 23:33:45,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:33:45,719 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 23:33:45,719 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:33:45,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 23:33:45,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:33:45,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:33:45,721 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 23:33:45,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:33:45,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:33:45,722 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:33:45,722 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 23:33:45,723 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 23:33:45,723 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_336bd7bd-8fa9-4503-b731-068057c90218/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_336bd7bd-8fa9-4503-b731-068057c90218/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 079a94391776bb57925fadb38be78dd5e66e0a82 [2020-11-29 23:33:46,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:33:46,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:33:46,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:33:46,040 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:33:46,041 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:33:46,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_336bd7bd-8fa9-4503-b731-068057c90218/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/Loop-2.c [2020-11-29 23:33:46,127 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_336bd7bd-8fa9-4503-b731-068057c90218/bin/uautomizer/data/3d446f55d/69915d6644044d2bb079479cfecb62f2/FLAG32920780f [2020-11-29 23:33:46,690 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:33:46,691 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_336bd7bd-8fa9-4503-b731-068057c90218/sv-benchmarks/c/termination-restricted-15/Loop-2.c [2020-11-29 23:33:46,701 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_336bd7bd-8fa9-4503-b731-068057c90218/bin/uautomizer/data/3d446f55d/69915d6644044d2bb079479cfecb62f2/FLAG32920780f [2020-11-29 23:33:47,069 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_336bd7bd-8fa9-4503-b731-068057c90218/bin/uautomizer/data/3d446f55d/69915d6644044d2bb079479cfecb62f2 [2020-11-29 23:33:47,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:33:47,078 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:33:47,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:33:47,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:33:47,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:33:47,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:33:47" (1/1) ... [2020-11-29 23:33:47,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c5119e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:33:47, skipping insertion in model container [2020-11-29 23:33:47,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:33:47" (1/1) ... [2020-11-29 23:33:47,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:33:47,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:33:47,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:33:47,270 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:33:47,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:33:47,317 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:33:47,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:33:47 WrapperNode [2020-11-29 23:33:47,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:33:47,319 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:33:47,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:33:47,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:33:47,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:33:47" (1/1) ... [2020-11-29 23:33:47,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:33:47" (1/1) ... [2020-11-29 23:33:47,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:33:47,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:33:47,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:33:47,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:33:47,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:33:47" (1/1) ... [2020-11-29 23:33:47,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:33:47" (1/1) ... [2020-11-29 23:33:47,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:33:47" (1/1) ... [2020-11-29 23:33:47,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:33:47" (1/1) ... [2020-11-29 23:33:47,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:33:47" (1/1) ... [2020-11-29 23:33:47,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:33:47" (1/1) ... [2020-11-29 23:33:47,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:33:47" (1/1) ... [2020-11-29 23:33:47,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:33:47,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:33:47,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:33:47,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:33:47,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:33:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_336bd7bd-8fa9-4503-b731-068057c90218/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 [2020-11-29 23:33:47,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:33:47,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:33:47,556 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:33:47,556 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 23:33:47,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:33:47 BoogieIcfgContainer [2020-11-29 23:33:47,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:33:47,559 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 23:33:47,559 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 23:33:47,562 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 23:33:47,563 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:33:47,563 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 11:33:47" (1/3) ... [2020-11-29 23:33:47,565 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2d705e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:33:47, skipping insertion in model container [2020-11-29 23:33:47,565 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:33:47,565 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:33:47" (2/3) ... [2020-11-29 23:33:47,566 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2d705e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:33:47, skipping insertion in model container [2020-11-29 23:33:47,566 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:33:47,566 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:33:47" (3/3) ... [2020-11-29 23:33:47,568 INFO L373 chiAutomizerObserver]: Analyzing ICFG Loop-2.c [2020-11-29 23:33:47,618 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 23:33:47,618 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 23:33:47,618 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 23:33:47,618 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:33:47,618 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:33:47,619 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 23:33:47,619 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:33:47,619 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 23:33:47,631 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-11-29 23:33:47,648 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 23:33:47,648 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:33:47,648 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:33:47,654 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 23:33:47,654 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 23:33:47,655 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 23:33:47,655 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-11-29 23:33:47,656 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 23:33:47,656 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:33:47,656 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:33:47,656 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 23:33:47,657 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 23:33:47,664 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~a~0, main_~b~0, main_~i~0;havoc main_~a~0;havoc main_~b~0;havoc main_~i~0;main_~a~0 := 5;main_~b~0 := 3;main_~i~0 := 0; 6#L13-2true [2020-11-29 23:33:47,664 INFO L796 eck$LassoCheckResult]: Loop: 6#L13-2true assume !!(main_~i~0 < 10);main_~i~0 := main_~i~0; 6#L13-2true [2020-11-29 23:33:47,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:33:47,670 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-29 23:33:47,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:33:47,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747425829] [2020-11-29 23:33:47,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:33:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:33:47,757 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:33:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:33:47,762 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:33:47,778 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:33:47,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:33:47,780 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2020-11-29 23:33:47,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:33:47,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158784616] [2020-11-29 23:33:47,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:33:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:33:47,788 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:33:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:33:47,793 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:33:47,794 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:33:47,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:33:47,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-29 23:33:47,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:33:47,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469623560] [2020-11-29 23:33:47,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:33:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:33:47,808 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:33:47,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:33:47,813 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:33:47,815 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:33:48,022 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-11-29 23:33:48,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 11:33:48 BoogieIcfgContainer [2020-11-29 23:33:48,067 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 23:33:48,068 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:33:48,068 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:33:48,068 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:33:48,069 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:33:47" (3/4) ... [2020-11-29 23:33:48,076 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 23:33:48,127 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_336bd7bd-8fa9-4503-b731-068057c90218/bin/uautomizer/witness.graphml [2020-11-29 23:33:48,129 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:33:48,136 INFO L168 Benchmark]: Toolchain (without parser) took 1052.90 ms. Allocated memory is still 119.5 MB. Free memory was 85.5 MB in the beginning and 66.0 MB in the end (delta: 19.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2020-11-29 23:33:48,137 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 73.4 MB. Free memory was 32.2 MB in the beginning and 32.2 MB in the end (delta: 35.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:33:48,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.96 ms. Allocated memory is still 119.5 MB. Free memory was 85.3 MB in the beginning and 95.3 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:33:48,142 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.89 ms. Allocated memory is still 119.5 MB. Free memory was 95.3 MB in the beginning and 94.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:33:48,143 INFO L168 Benchmark]: Boogie Preprocessor took 17.45 ms. Allocated memory is still 119.5 MB. Free memory was 94.0 MB in the beginning and 93.3 MB in the end (delta: 635.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:33:48,144 INFO L168 Benchmark]: RCFGBuilder took 186.64 ms. Allocated memory is still 119.5 MB. Free memory was 93.3 MB in the beginning and 85.6 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:33:48,146 INFO L168 Benchmark]: BuchiAutomizer took 507.83 ms. Allocated memory is still 119.5 MB. Free memory was 85.6 MB in the beginning and 68.0 MB in the end (delta: 17.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 23:33:48,148 INFO L168 Benchmark]: Witness Printer took 61.90 ms. Allocated memory is still 119.5 MB. Free memory was 68.0 MB in the beginning and 66.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:33:48,151 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 73.4 MB. Free memory was 32.2 MB in the beginning and 32.2 MB in the end (delta: 35.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 238.96 ms. Allocated memory is still 119.5 MB. Free memory was 85.3 MB in the beginning and 95.3 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.89 ms. Allocated memory is still 119.5 MB. Free memory was 95.3 MB in the beginning and 94.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.45 ms. Allocated memory is still 119.5 MB. Free memory was 94.0 MB in the beginning and 93.3 MB in the end (delta: 635.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 186.64 ms. Allocated memory is still 119.5 MB. Free memory was 93.3 MB in the beginning and 85.6 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 507.83 ms. Allocated memory is still 119.5 MB. Free memory was 85.6 MB in the beginning and 68.0 MB in the end (delta: 17.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Witness Printer took 61.90 ms. Allocated memory is still 119.5 MB. Free memory was 68.0 MB in the beginning and 66.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 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 0.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. 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: 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 {a=5, \result=0, b=3, i=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int a; [L7] int b; [L8] int i; [L9] a = 5 [L10] b = 3 [L11] i = 0 Loop: [L13] COND TRUE i < 10 [L13] i = i + 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...