./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.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 f55c3c29f65baba8ba49ec35fe2e62008dfb74b3 ........................................................................................................................................................................................................................................................................ 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 0.1.25-9a8b2e8 [2020-10-20 06:34:05,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:34:05,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:34:05,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:34:05,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:34:05,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:34:05,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:34:05,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:34:05,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:34:05,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:34:05,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:34:05,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:34:05,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:34:05,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:34:05,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:34:05,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:34:05,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:34:05,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:34:05,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:34:05,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:34:05,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:34:05,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:34:05,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:34:05,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:34:05,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:34:05,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:34:05,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:34:05,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:34:05,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:34:05,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:34:05,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:34:05,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:34:05,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:34:05,234 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:34:05,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:34:05,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:34:05,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:34:05,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:34:05,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:34:05,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:34:05,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:34:05,239 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:34:05,271 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:34:05,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:34:05,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:34:05,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:34:05,273 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:34:05,273 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:34:05,273 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:34:05,273 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:34:05,274 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:34:05,274 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:34:05,274 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:34:05,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:34:05,274 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:34:05,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:34:05,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:34:05,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:34:05,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:34:05,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:34:05,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:34:05,276 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:34:05,276 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:34:05,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:34:05,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:34:05,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:34:05,277 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:34:05,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:34:05,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:34:05,277 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:34:05,278 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:34:05,279 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:34:05,279 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 -> /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 -> f55c3c29f65baba8ba49ec35fe2e62008dfb74b3 [2020-10-20 06:34:05,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:34:05,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:34:05,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:34:05,528 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:34:05,529 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:34:05,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c [2020-10-20 06:34:05,603 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc757ef63/0a8088832404454393e5a2cca9129777/FLAGf990780d3 [2020-10-20 06:34:06,147 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:34:06,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c [2020-10-20 06:34:06,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc757ef63/0a8088832404454393e5a2cca9129777/FLAGf990780d3 [2020-10-20 06:34:06,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc757ef63/0a8088832404454393e5a2cca9129777 [2020-10-20 06:34:06,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:34:06,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:34:06,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:34:06,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:34:06,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:34:06,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:34:06" (1/1) ... [2020-10-20 06:34:06,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f45f876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:06, skipping insertion in model container [2020-10-20 06:34:06,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:34:06" (1/1) ... [2020-10-20 06:34:06,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:34:06,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:34:06,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:34:06,659 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:34:06,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:34:06,699 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:34:06,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:06 WrapperNode [2020-10-20 06:34:06,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:34:06,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:34:06,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:34:06,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:34:06,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:06" (1/1) ... [2020-10-20 06:34:06,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:06" (1/1) ... [2020-10-20 06:34:06,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:34:06,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:34:06,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:34:06,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:34:06,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:06" (1/1) ... [2020-10-20 06:34:06,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:06" (1/1) ... [2020-10-20 06:34:06,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:06" (1/1) ... [2020-10-20 06:34:06,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:06" (1/1) ... [2020-10-20 06:34:06,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:06" (1/1) ... [2020-10-20 06:34:06,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:06" (1/1) ... [2020-10-20 06:34:06,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:06" (1/1) ... [2020-10-20 06:34:06,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:34:06,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:34:06,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:34:06,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:34:06,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:06" (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 [2020-10-20 06:34:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:34:06,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:34:07,016 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:34:07,017 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 06:34:07,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:34:07 BoogieIcfgContainer [2020-10-20 06:34:07,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:34:07,020 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:34:07,020 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:34:07,025 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:34:07,026 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:34:07,026 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:34:06" (1/3) ... [2020-10-20 06:34:07,027 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1694bfd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:34:07, skipping insertion in model container [2020-10-20 06:34:07,028 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:34:07,028 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:06" (2/3) ... [2020-10-20 06:34:07,029 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1694bfd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:34:07, skipping insertion in model container [2020-10-20 06:34:07,029 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:34:07,029 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:34:07" (3/3) ... [2020-10-20 06:34:07,032 INFO L373 chiAutomizerObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1-modified.c [2020-10-20 06:34:07,093 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:34:07,093 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:34:07,093 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:34:07,093 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:34:07,093 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:34:07,094 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:34:07,094 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:34:07,094 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:34:07,108 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-20 06:34:07,128 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:34:07,128 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:07,129 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:07,145 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 06:34:07,145 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:34:07,146 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:34:07,146 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-20 06:34:07,147 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:34:07,147 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:07,147 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:07,147 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 06:34:07,148 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:34:07,155 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 9#L20true assume main_~y1~0 >= 0 && main_~y2~0 >= 0; 10#L22-2true [2020-10-20 06:34:07,155 INFO L796 eck$LassoCheckResult]: Loop: 10#L22-2true assume !!(main_~y1~0 != main_~y2~0); 4#L22true assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 10#L22-2true [2020-10-20 06:34:07,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:07,161 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2020-10-20 06:34:07,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:07,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655946633] [2020-10-20 06:34:07,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:07,243 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:07,248 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:07,262 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:07,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:07,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2020-10-20 06:34:07,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:07,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699384511] [2020-10-20 06:34:07,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:07,277 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:07,283 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:07,284 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:07,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:07,288 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2020-10-20 06:34:07,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:07,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999965298] [2020-10-20 06:34:07,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:07,302 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:07,307 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:07,309 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:07,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:34:07 BoogieIcfgContainer [2020-10-20 06:34:07,422 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:34:07,423 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:34:07,423 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:34:07,423 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:34:07,424 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:34:07" (3/4) ... [2020-10-20 06:34:07,427 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-20 06:34:07,485 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:34:07,485 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:34:07,488 INFO L168 Benchmark]: Toolchain (without parser) took 1064.29 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 24.3 MB in the beginning and 10.2 MB in the end (delta: 14.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:07,489 INFO L168 Benchmark]: CDTParser took 1.30 ms. Allocated memory is still 32.5 MB. Free memory was 11.4 MB in the beginning and 11.4 MB in the end (delta: 52.8 kB). Peak memory consumption was 52.8 kB. Max. memory is 14.3 GB. [2020-10-20 06:34:07,490 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.15 ms. Allocated memory is still 43.0 MB. Free memory was 23.4 MB in the beginning and 14.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:07,492 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.93 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 13.9 MB in the beginning and 25.9 MB in the end (delta: -12.0 MB). Peak memory consumption was 4.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:07,493 INFO L168 Benchmark]: Boogie Preprocessor took 21.90 ms. Allocated memory is still 43.5 MB. Free memory was 25.9 MB in the beginning and 24.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:07,494 INFO L168 Benchmark]: RCFGBuilder took 240.98 ms. Allocated memory is still 43.5 MB. Free memory was 24.7 MB in the beginning and 15.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:07,496 INFO L168 Benchmark]: BuchiAutomizer took 402.48 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 15.8 MB in the beginning and 12.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 5.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:07,497 INFO L168 Benchmark]: Witness Printer took 62.32 ms. Allocated memory is still 45.6 MB. Free memory was 12.0 MB in the beginning and 10.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:07,505 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.30 ms. Allocated memory is still 32.5 MB. Free memory was 11.4 MB in the beginning and 11.4 MB in the end (delta: 52.8 kB). Peak memory consumption was 52.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 271.15 ms. Allocated memory is still 43.0 MB. Free memory was 23.4 MB in the beginning and 14.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 53.93 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 13.9 MB in the beginning and 25.9 MB in the end (delta: -12.0 MB). Peak memory consumption was 4.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 21.90 ms. Allocated memory is still 43.5 MB. Free memory was 25.9 MB in the beginning and 24.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 240.98 ms. Allocated memory is still 43.5 MB. Free memory was 24.7 MB in the beginning and 15.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 402.48 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 15.8 MB in the beginning and 12.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 5.6 MB. Max. memory is 14.3 GB. * Witness Printer took 62.32 ms. Allocated memory is still 45.6 MB. Free memory was 12.0 MB in the beginning and 10.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 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 0.3s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. 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: 21]: 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 {y2=0, y1=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@73f4d841=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@644c53a=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 21]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L17] int y1, y2; [L18] y1 = __VERIFIER_nondet_int() [L19] y2 = __VERIFIER_nondet_int() [L20] COND TRUE y1 >= 0 && y2 >= 0 Loop: [L21] COND TRUE y1 != y2 [L22] COND TRUE y1 > y2 [L23] y1 = y1 - y2 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...