./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 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/NO_21.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0.2.0-5485861 [2020-10-26 04:16:47,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:16:47,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:16:47,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:16:47,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:16:47,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:16:47,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:16:47,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:16:47,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:16:47,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:16:47,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:16:47,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:16:47,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:16:47,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:16:47,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:16:47,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:16:47,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:16:47,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:16:47,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:16:47,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:16:47,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:16:47,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:16:47,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:16:47,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:16:47,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:16:47,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:16:47,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:16:47,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:16:47,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:16:47,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:16:47,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:16:47,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:16:47,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:16:47,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:16:47,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:16:47,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:16:47,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:16:47,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:16:47,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:16:47,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:16:47,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:16:47,376 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-26 04:16:47,433 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:16:47,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:16:47,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:16:47,438 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:16:47,438 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:16:47,438 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 04:16:47,438 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 04:16:47,439 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 04:16:47,439 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 04:16:47,439 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 04:16:47,441 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 04:16:47,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:16:47,441 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:16:47,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:16:47,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:16:47,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 04:16:47,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 04:16:47,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 04:16:47,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:16:47,443 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 04:16:47,443 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:16:47,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 04:16:47,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:16:47,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:16:47,444 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 04:16:47,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:16:47,445 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:16:47,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:16:47,445 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 04:16:47,447 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 04:16:47,447 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 012f84fd0ea677a0f91b2a112c75e9cee95427f9 [2020-10-26 04:16:47,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:16:47,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:16:47,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:16:47,979 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:16:47,980 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:16:47,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/NO_21.c [2020-10-26 04:16:48,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f57d796d6/0c7e778aab4c4324bbedddb691b29491/FLAGea6967061 [2020-10-26 04:16:48,679 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:16:48,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/NO_21.c [2020-10-26 04:16:48,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f57d796d6/0c7e778aab4c4324bbedddb691b29491/FLAGea6967061 [2020-10-26 04:16:49,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f57d796d6/0c7e778aab4c4324bbedddb691b29491 [2020-10-26 04:16:49,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:16:49,077 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:16:49,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:16:49,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:16:49,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:16:49,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:16:49" (1/1) ... [2020-10-26 04:16:49,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67459667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:49, skipping insertion in model container [2020-10-26 04:16:49,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:16:49" (1/1) ... [2020-10-26 04:16:49,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:16:49,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:16:49,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:16:49,317 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:16:49,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:16:49,344 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:16:49,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:49 WrapperNode [2020-10-26 04:16:49,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:16:49,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:16:49,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:16:49,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:16:49,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:49" (1/1) ... [2020-10-26 04:16:49,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:49" (1/1) ... [2020-10-26 04:16:49,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:16:49,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:16:49,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:16:49,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:16:49,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:49" (1/1) ... [2020-10-26 04:16:49,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:49" (1/1) ... [2020-10-26 04:16:49,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:49" (1/1) ... [2020-10-26 04:16:49,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:49" (1/1) ... [2020-10-26 04:16:49,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:49" (1/1) ... [2020-10-26 04:16:49,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:49" (1/1) ... [2020-10-26 04:16:49,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:49" (1/1) ... [2020-10-26 04:16:49,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:16:49,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:16:49,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:16:49,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:16:49,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 04:16:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:16:49,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:16:49,631 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:16:49,631 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-26 04:16:49,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:16:49 BoogieIcfgContainer [2020-10-26 04:16:49,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:16:49,634 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 04:16:49,635 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 04:16:49,638 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 04:16:49,639 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:16:49,640 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 04:16:49" (1/3) ... [2020-10-26 04:16:49,641 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6c3943bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:16:49, skipping insertion in model container [2020-10-26 04:16:49,641 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:16:49,641 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:49" (2/3) ... [2020-10-26 04:16:49,642 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6c3943bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:16:49, skipping insertion in model container [2020-10-26 04:16:49,642 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:16:49,642 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:16:49" (3/3) ... [2020-10-26 04:16:49,644 INFO L373 chiAutomizerObserver]: Analyzing ICFG NO_21.c [2020-10-26 04:16:49,699 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 04:16:49,700 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 04:16:49,700 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 04:16:49,700 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:16:49,701 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:16:49,707 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 04:16:49,708 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:16:49,708 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 04:16:49,724 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-10-26 04:16:49,748 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-26 04:16:49,749 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:16:49,749 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:16:49,756 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:16:49,756 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-26 04:16:49,756 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 04:16:49,757 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-10-26 04:16:49,758 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-26 04:16:49,758 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:16:49,758 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:16:49,758 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:16:49,759 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-26 04:16:49,767 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0;havoc main_~i~0;main_~i~0 := 0; 5#L9-2true [2020-10-26 04:16:49,768 INFO L796 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 [2020-10-26 04:16:49,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:49,774 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-26 04:16:49,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:49,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16802046] [2020-10-26 04:16:49,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:49,892 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:49,897 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:49,914 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:49,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:49,916 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2020-10-26 04:16:49,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:49,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235602373] [2020-10-26 04:16:49,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:49,924 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:49,929 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:49,930 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:49,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:49,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-10-26 04:16:49,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:49,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108853849] [2020-10-26 04:16:49,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:49,944 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:49,949 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:49,950 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:50,114 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2020-10-26 04:16:50,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 04:16:50 BoogieIcfgContainer [2020-10-26 04:16:50,162 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 04:16:50,163 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:16:50,163 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:16:50,163 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:16:50,164 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:16:49" (3/4) ... [2020-10-26 04:16:50,167 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-26 04:16:50,211 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 04:16:50,212 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:16:50,215 INFO L168 Benchmark]: Toolchain (without parser) took 1141.79 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 22.4 MB in the beginning and 31.7 MB in the end (delta: -9.3 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:50,216 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 44.0 MB. Free memory was 24.6 MB in the beginning and 24.6 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:16:50,217 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.92 ms. Allocated memory is still 44.0 MB. Free memory was 21.7 MB in the beginning and 22.8 MB in the end (delta: -1.0 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:50,218 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.06 ms. Allocated memory is still 44.0 MB. Free memory was 22.8 MB in the beginning and 21.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:50,219 INFO L168 Benchmark]: Boogie Preprocessor took 19.02 ms. Allocated memory is still 44.0 MB. Free memory was 21.5 MB in the beginning and 20.7 MB in the end (delta: 828.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:16:50,221 INFO L168 Benchmark]: RCFGBuilder took 235.41 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.6 MB in the beginning and 35.2 MB in the end (delta: -14.7 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:50,222 INFO L168 Benchmark]: BuchiAutomizer took 527.31 ms. Allocated memory is still 54.5 MB. Free memory was 35.0 MB in the beginning and 33.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 401.9 kB. Max. memory is 16.1 GB. [2020-10-26 04:16:50,223 INFO L168 Benchmark]: Witness Printer took 49.46 ms. Allocated memory is still 54.5 MB. Free memory was 33.4 MB in the beginning and 31.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:50,229 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 44.0 MB. Free memory was 24.6 MB in the beginning and 24.6 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 262.92 ms. Allocated memory is still 44.0 MB. Free memory was 21.7 MB in the beginning and 22.8 MB in the end (delta: -1.0 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.06 ms. Allocated memory is still 44.0 MB. Free memory was 22.8 MB in the beginning and 21.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.02 ms. Allocated memory is still 44.0 MB. Free memory was 21.5 MB in the beginning and 20.7 MB in the end (delta: 828.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 235.41 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.6 MB in the beginning and 35.2 MB in the end (delta: -14.7 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 527.31 ms. Allocated memory is still 54.5 MB. Free memory was 35.0 MB in the beginning and 33.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 401.9 kB. Max. memory is 16.1 GB. * Witness Printer took 49.46 ms. Allocated memory is still 54.5 MB. Free memory was 33.4 MB in the beginning and 31.7 MB in the end (delta: 1.7 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: 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...