./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.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-restricted-15/TwoFloatInterv.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 c81b642bdc34318660f50d5b284278ba8988a3d4 ............................................................................................................................................................................................................................................................................................................................. 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 06:36:07,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:36:07,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:36:07,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:36:07,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:36:07,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:36:07,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:36:07,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:36:07,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:36:07,199 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:36:07,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:36:07,201 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:36:07,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:36:07,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:36:07,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:36:07,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:36:07,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:36:07,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:36:07,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:36:07,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:36:07,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:36:07,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:36:07,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:36:07,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:36:07,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:36:07,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:36:07,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:36:07,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:36:07,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:36:07,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:36:07,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:36:07,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:36:07,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:36:07,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:36:07,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:36:07,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:36:07,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:36:07,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:36:07,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:36:07,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:36:07,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:36:07,247 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:36:07,293 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:36:07,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:36:07,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:36:07,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:36:07,295 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:36:07,295 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:36:07,296 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:36:07,296 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:36:07,296 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:36:07,296 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:36:07,297 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:36:07,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:36:07,298 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:36:07,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:36:07,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:36:07,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:36:07,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:36:07,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:36:07,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:36:07,300 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:36:07,300 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:36:07,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:36:07,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:36:07,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:36:07,301 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:36:07,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:36:07,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:36:07,302 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:36:07,302 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:36:07,303 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:36:07,304 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 -> c81b642bdc34318660f50d5b284278ba8988a3d4 [2020-10-20 06:36:07,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:36:07,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:36:07,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:36:07,515 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:36:07,515 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:36:07,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c [2020-10-20 06:36:07,588 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0ddd154d/acea3732b5d54bea9847675bc5e27acf/FLAG5e90029a7 [2020-10-20 06:36:08,146 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:36:08,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c [2020-10-20 06:36:08,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0ddd154d/acea3732b5d54bea9847675bc5e27acf/FLAG5e90029a7 [2020-10-20 06:36:08,577 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0ddd154d/acea3732b5d54bea9847675bc5e27acf [2020-10-20 06:36:08,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:36:08,589 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:36:08,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:36:08,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:36:08,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:36:08,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:36:08" (1/1) ... [2020-10-20 06:36:08,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@779cc586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:08, skipping insertion in model container [2020-10-20 06:36:08,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:36:08" (1/1) ... [2020-10-20 06:36:08,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:36:08,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:36:08,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:36:08,780 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:36:08,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:36:08,811 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:36:08,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:08 WrapperNode [2020-10-20 06:36:08,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:36:08,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:36:08,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:36:08,814 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:36:08,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:08" (1/1) ... [2020-10-20 06:36:08,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:08" (1/1) ... [2020-10-20 06:36:08,854 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:36:08,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:36:08,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:36:08,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:36:08,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:08" (1/1) ... [2020-10-20 06:36:08,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:08" (1/1) ... [2020-10-20 06:36:08,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:08" (1/1) ... [2020-10-20 06:36:08,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:08" (1/1) ... [2020-10-20 06:36:08,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:08" (1/1) ... [2020-10-20 06:36:08,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:08" (1/1) ... [2020-10-20 06:36:08,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:08" (1/1) ... [2020-10-20 06:36:08,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:36:08,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:36:08,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:36:08,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:36:08,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:08" (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 06:36:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:36:08,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:36:09,081 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:36:09,081 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 06:36:09,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:36:09 BoogieIcfgContainer [2020-10-20 06:36:09,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:36:09,084 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:36:09,084 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:36:09,087 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:36:09,088 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:36:09,089 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:36:08" (1/3) ... [2020-10-20 06:36:09,090 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@127145df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:36:09, skipping insertion in model container [2020-10-20 06:36:09,090 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:36:09,091 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:08" (2/3) ... [2020-10-20 06:36:09,091 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@127145df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:36:09, skipping insertion in model container [2020-10-20 06:36:09,091 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:36:09,092 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:36:09" (3/3) ... [2020-10-20 06:36:09,093 INFO L373 chiAutomizerObserver]: Analyzing ICFG TwoFloatInterv.c [2020-10-20 06:36:09,144 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:36:09,145 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:36:09,145 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:36:09,145 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:36:09,145 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:36:09,145 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:36:09,146 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:36:09,146 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:36:09,161 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-10-20 06:36:09,183 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 06:36:09,183 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:36:09,183 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:36:09,189 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:36:09,189 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 06:36:09,189 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:36:09,190 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-10-20 06:36:09,191 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 06:36:09,191 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:36:09,191 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:36:09,192 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:36:09,192 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 06:36:09,206 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 3#L16-1true [2020-10-20 06:36:09,207 INFO L796 eck$LassoCheckResult]: Loop: 3#L16-1true assume !!(main_~i~0 > 0 && main_~i~0 < 50); 4#L10true assume main_~i~0 < 20;main_~i~0 := main_~i~0 - 1; 10#L10-2true assume main_~i~0 > 10;main_~i~0 := 1 + main_~i~0; 7#L13-1true assume 30 <= main_~i~0 && main_~i~0 <= 40;main_~i~0 := main_~i~0 - 1; 3#L16-1true [2020-10-20 06:36:09,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:09,216 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-20 06:36:09,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:09,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710579514] [2020-10-20 06:36:09,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:09,303 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:09,307 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:09,322 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:09,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:09,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1234538, now seen corresponding path program 1 times [2020-10-20 06:36:09,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:09,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706516860] [2020-10-20 06:36:09,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:09,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:09,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706516860] [2020-10-20 06:36:09,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:36:09,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:36:09,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357306575] [2020-10-20 06:36:09,419 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-20 06:36:09,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:36:09,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:36:09,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:36:09,434 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2020-10-20 06:36:09,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:36:09,578 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2020-10-20 06:36:09,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:36:09,581 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 25 transitions. [2020-10-20 06:36:09,583 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2020-10-20 06:36:09,587 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 12 states and 16 transitions. [2020-10-20 06:36:09,588 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-10-20 06:36:09,588 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-10-20 06:36:09,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2020-10-20 06:36:09,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:36:09,589 INFO L691 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2020-10-20 06:36:09,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2020-10-20 06:36:09,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 9. [2020-10-20 06:36:09,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-20 06:36:09,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2020-10-20 06:36:09,623 INFO L714 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2020-10-20 06:36:09,623 INFO L594 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2020-10-20 06:36:09,623 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:36:09,623 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 13 transitions. [2020-10-20 06:36:09,624 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-20 06:36:09,624 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:36:09,625 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:36:09,625 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:36:09,625 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 06:36:09,625 INFO L794 eck$LassoCheckResult]: Stem: 42#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 43#L16-1 [2020-10-20 06:36:09,626 INFO L796 eck$LassoCheckResult]: Loop: 43#L16-1 assume !!(main_~i~0 > 0 && main_~i~0 < 50); 45#L10 assume !(main_~i~0 < 20); 46#L10-2 assume main_~i~0 > 10;main_~i~0 := 1 + main_~i~0; 47#L13-1 assume 30 <= main_~i~0 && main_~i~0 <= 40;main_~i~0 := main_~i~0 - 1; 43#L16-1 [2020-10-20 06:36:09,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:09,626 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2020-10-20 06:36:09,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:09,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768032993] [2020-10-20 06:36:09,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:09,631 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:09,633 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:09,634 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:09,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:09,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1236460, now seen corresponding path program 1 times [2020-10-20 06:36:09,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:09,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182173644] [2020-10-20 06:36:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:09,643 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:09,648 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:09,649 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:09,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:09,650 INFO L82 PathProgramCache]: Analyzing trace with hash 29865611, now seen corresponding path program 1 times [2020-10-20 06:36:09,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:09,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426721840] [2020-10-20 06:36:09,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:09,657 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:09,666 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:09,667 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:09,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:36:09 BoogieIcfgContainer [2020-10-20 06:36:09,775 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:36:09,775 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:36:09,775 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:36:09,776 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:36:09,776 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:36:09" (3/4) ... [2020-10-20 06:36:09,779 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-20 06:36:09,823 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:36:09,823 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:36:09,826 INFO L168 Benchmark]: Toolchain (without parser) took 1242.70 ms. Allocated memory was 43.0 MB in the beginning and 48.8 MB in the end (delta: 5.8 MB). Free memory was 25.6 MB in the beginning and 16.9 MB in the end (delta: 8.7 MB). Peak memory consumption was 14.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:36:09,827 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 32.5 MB. Free memory was 11.3 MB in the beginning and 11.2 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. [2020-10-20 06:36:09,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 220.44 ms. Allocated memory is still 43.0 MB. Free memory was 24.7 MB in the beginning and 15.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:36:09,829 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.19 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 15.3 MB in the beginning and 28.1 MB in the end (delta: -12.8 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:36:09,830 INFO L168 Benchmark]: Boogie Preprocessor took 16.26 ms. Allocated memory is still 45.6 MB. Free memory was 28.1 MB in the beginning and 26.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:36:09,831 INFO L168 Benchmark]: RCFGBuilder took 211.81 ms. Allocated memory is still 45.6 MB. Free memory was 26.9 MB in the beginning and 17.9 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:36:09,832 INFO L168 Benchmark]: BuchiAutomizer took 691.20 ms. Allocated memory was 45.6 MB in the beginning and 48.8 MB in the end (delta: 3.1 MB). Free memory was 17.7 MB in the beginning and 19.0 MB in the end (delta: -1.2 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:36:09,833 INFO L168 Benchmark]: Witness Printer took 48.33 ms. Allocated memory is still 48.8 MB. Free memory was 19.0 MB in the beginning and 16.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:36:09,837 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 32.5 MB. Free memory was 11.3 MB in the beginning and 11.2 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 220.44 ms. Allocated memory is still 43.0 MB. Free memory was 24.7 MB in the beginning and 15.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 41.19 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 15.3 MB in the beginning and 28.1 MB in the end (delta: -12.8 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 16.26 ms. Allocated memory is still 45.6 MB. Free memory was 28.1 MB in the beginning and 26.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 211.81 ms. Allocated memory is still 45.6 MB. Free memory was 26.9 MB in the beginning and 17.9 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 691.20 ms. Allocated memory was 45.6 MB in the beginning and 48.8 MB in the end (delta: 3.1 MB). Free memory was 17.7 MB in the beginning and 19.0 MB in the end (delta: -1.2 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Witness Printer took 48.33 ms. Allocated memory is still 48.8 MB. Free memory was 19.0 MB in the beginning and 16.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 4 locations. The remainder module has 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.1s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 9 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 12 SDtfs, 8 SDslu, 6 SDs, 0 SdLazy, 25 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI1 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 {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4696902=0, \result=0, i=29} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() Loop: [L9] COND TRUE i > 0 && i < 50 [L10] COND FALSE !(i < 20) [L13] COND TRUE i > 10 [L14] i = i+1 [L16] COND TRUE 30 <= i && i <= 40 [L17] i = i-1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...