./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/Division-2.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/Division-2.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 d089d3bcb050ed43a9f47a1e8909790d01358f90 .................................................................................................................................................................................................................................................................... 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 06:32:35,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:32:35,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:32:35,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:32:35,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:32:35,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:32:35,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:32:35,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:32:35,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:32:35,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:32:35,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:32:35,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:32:35,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:32:35,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:32:35,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:32:35,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:32:35,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:32:35,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:32:35,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:32:35,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:32:35,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:32:35,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:32:35,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:32:35,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:32:35,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:32:35,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:32:35,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:32:35,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:32:35,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:32:35,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:32:35,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:32:35,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:32:35,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:32:35,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:32:35,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:32:35,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:32:35,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:32:35,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:32:35,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:32:35,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:32:35,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:32:35,121 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:32:35,144 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:32:35,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:32:35,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:32:35,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:32:35,147 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:32:35,147 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:32:35,147 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:32:35,147 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:32:35,148 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:32:35,148 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:32:35,148 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:32:35,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:32:35,149 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:32:35,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:32:35,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:32:35,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:32:35,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:32:35,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:32:35,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:32:35,150 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:32:35,150 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:32:35,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:32:35,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:32:35,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:32:35,151 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:32:35,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:32:35,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:32:35,152 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:32:35,153 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:32:35,154 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:32:35,154 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 -> d089d3bcb050ed43a9f47a1e8909790d01358f90 [2020-10-20 06:32:35,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:32:35,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:32:35,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:32:35,407 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:32:35,408 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:32:35,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Division-2.c [2020-10-20 06:32:35,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8610162e/f8b755d842a1440289aa0f74300d4e90/FLAG7b82cf0dc [2020-10-20 06:32:36,060 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:32:36,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Division-2.c [2020-10-20 06:32:36,066 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8610162e/f8b755d842a1440289aa0f74300d4e90/FLAG7b82cf0dc [2020-10-20 06:32:36,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8610162e/f8b755d842a1440289aa0f74300d4e90 [2020-10-20 06:32:36,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:32:36,463 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:32:36,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:32:36,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:32:36,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:32:36,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:32:36" (1/1) ... [2020-10-20 06:32:36,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec0bf62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:36, skipping insertion in model container [2020-10-20 06:32:36,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:32:36" (1/1) ... [2020-10-20 06:32:36,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:32:36,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:32:36,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:32:36,680 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:32:36,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:32:36,704 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:32:36,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:36 WrapperNode [2020-10-20 06:32:36,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:32:36,706 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:32:36,706 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:32:36,706 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:32:36,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:36" (1/1) ... [2020-10-20 06:32:36,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:36" (1/1) ... [2020-10-20 06:32:36,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:32:36,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:32:36,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:32:36,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:32:36,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:36" (1/1) ... [2020-10-20 06:32:36,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:36" (1/1) ... [2020-10-20 06:32:36,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:36" (1/1) ... [2020-10-20 06:32:36,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:36" (1/1) ... [2020-10-20 06:32:36,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:36" (1/1) ... [2020-10-20 06:32:36,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:36" (1/1) ... [2020-10-20 06:32:36,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:36" (1/1) ... [2020-10-20 06:32:36,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:32:36,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:32:36,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:32:36,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:32:36,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:36" (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 06:32:36,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:32:36,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:32:36,960 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:32:36,960 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 06:32:36,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:32:36 BoogieIcfgContainer [2020-10-20 06:32:36,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:32:36,963 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:32:36,963 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:32:36,967 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:32:36,968 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:32:36,968 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:32:36" (1/3) ... [2020-10-20 06:32:36,970 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@768999f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:32:36, skipping insertion in model container [2020-10-20 06:32:36,970 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:32:36,970 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:36" (2/3) ... [2020-10-20 06:32:36,971 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@768999f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:32:36, skipping insertion in model container [2020-10-20 06:32:36,971 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:32:36,971 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:32:36" (3/3) ... [2020-10-20 06:32:36,973 INFO L373 chiAutomizerObserver]: Analyzing ICFG Division-2.c [2020-10-20 06:32:37,023 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:32:37,024 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:32:37,024 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:32:37,024 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:32:37,024 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:32:37,024 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:32:37,024 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:32:37,025 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:32:37,037 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-10-20 06:32:37,056 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-20 06:32:37,057 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:32:37,057 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:32:37,062 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:32:37,062 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-20 06:32:37,062 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:32:37,063 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-10-20 06:32:37,063 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-20 06:32:37,064 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:32:37,064 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:32:37,064 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:32:37,064 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-20 06:32:37,070 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~y~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0; 6#L14-2true [2020-10-20 06:32:37,071 INFO L796 eck$LassoCheckResult]: Loop: 6#L14-2true assume !!(main_~y~0 >= 0 && main_~y~0 <= 10);main_~y~0 := (if 1 + 2 * main_~y~0 < 0 && 0 != (1 + 2 * main_~y~0) % 2 then 1 + (1 + 2 * main_~y~0) / 2 else (1 + 2 * main_~y~0) / 2); 6#L14-2true [2020-10-20 06:32:37,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:32:37,077 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-20 06:32:37,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:32:37,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491688124] [2020-10-20 06:32:37,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:32:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:32:37,149 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:32:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:32:37,153 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:32:37,167 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:32:37,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:32:37,169 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2020-10-20 06:32:37,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:32:37,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853398100] [2020-10-20 06:32:37,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:32:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:32:37,191 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:32:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:32:37,205 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:32:37,207 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:32:37,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:32:37,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-10-20 06:32:37,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:32:37,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071546333] [2020-10-20 06:32:37,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:32:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:32:37,219 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:32:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:32:37,227 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:32:37,228 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:32:37,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:32:37 BoogieIcfgContainer [2020-10-20 06:32:37,427 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:32:37,428 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:32:37,428 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:32:37,429 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:32:37,429 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:32:36" (3/4) ... [2020-10-20 06:32:37,432 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-20 06:32:37,466 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:32:37,467 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:32:37,470 INFO L168 Benchmark]: Toolchain (without parser) took 1011.04 ms. Allocated memory was 40.9 MB in the beginning and 43.5 MB in the end (delta: 2.6 MB). Free memory was 19.0 MB in the beginning and 14.7 MB in the end (delta: 4.3 MB). Peak memory consumption was 7.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:32:37,471 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 31.5 MB. Free memory was 7.5 MB in the beginning and 7.5 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-20 06:32:37,472 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.94 ms. Allocated memory was 40.9 MB in the beginning and 41.9 MB in the end (delta: 1.0 MB). Free memory was 18.2 MB in the beginning and 20.2 MB in the end (delta: -2.0 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:32:37,473 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.09 ms. Allocated memory is still 41.9 MB. Free memory was 20.1 MB in the beginning and 18.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:32:37,474 INFO L168 Benchmark]: Boogie Preprocessor took 18.68 ms. Allocated memory is still 41.9 MB. Free memory was 18.7 MB in the beginning and 17.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:32:37,475 INFO L168 Benchmark]: RCFGBuilder took 210.18 ms. Allocated memory was 41.9 MB in the beginning and 43.0 MB in the end (delta: 1.0 MB). Free memory was 17.6 MB in the beginning and 24.0 MB in the end (delta: -6.5 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:32:37,476 INFO L168 Benchmark]: BuchiAutomizer took 464.69 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 23.8 MB in the beginning and 16.4 MB in the end (delta: 7.4 MB). Peak memory consumption was 7.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:32:37,477 INFO L168 Benchmark]: Witness Printer took 38.93 ms. Allocated memory is still 43.5 MB. Free memory was 16.4 MB in the beginning and 14.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:32:37,482 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 31.5 MB. Free memory was 7.5 MB in the beginning and 7.5 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 240.94 ms. Allocated memory was 40.9 MB in the beginning and 41.9 MB in the end (delta: 1.0 MB). Free memory was 18.2 MB in the beginning and 20.2 MB in the end (delta: -2.0 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 27.09 ms. Allocated memory is still 41.9 MB. Free memory was 20.1 MB in the beginning and 18.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 18.68 ms. Allocated memory is still 41.9 MB. Free memory was 18.7 MB in the beginning and 17.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 210.18 ms. Allocated memory was 41.9 MB in the beginning and 43.0 MB in the end (delta: 1.0 MB). Free memory was 17.6 MB in the beginning and 24.0 MB in the end (delta: -6.5 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 464.69 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 23.8 MB in the beginning and 16.4 MB in the end (delta: 7.4 MB). Peak memory consumption was 7.9 MB. Max. memory is 14.3 GB. * Witness Printer took 38.93 ms. Allocated memory is still 43.5 MB. Free memory was 16.4 MB in the beginning and 14.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 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 0.3s. 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: 14]: 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@5be837ae=0, \result=0, y=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 14]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int y = __VERIFIER_nondet_int(); Loop: [L14] COND TRUE y >= 0 && y <= 10 [L15] y = (2*y + 1) / 2 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...