./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-acceleration/phases_2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/loop-acceleration/phases_2-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash 3cd199824dccc6e7aa84d2a9a82b4dda750590d9 ................................................................................................................................................................................................................................................................................. 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-f470102 [2019-11-28 20:49:59,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:49:59,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:49:59,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:49:59,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:49:59,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:49:59,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:49:59,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:49:59,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:49:59,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:49:59,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:49:59,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:49:59,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:49:59,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:49:59,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:49:59,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:49:59,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:49:59,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:49:59,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:49:59,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:49:59,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:49:59,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:49:59,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:49:59,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:49:59,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:49:59,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:49:59,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:49:59,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:49:59,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:49:59,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:49:59,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:49:59,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:49:59,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:49:59,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:49:59,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:49:59,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:49:59,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:49:59,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:49:59,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:49:59,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:49:59,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:49:59,470 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-28 20:49:59,505 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:49:59,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:49:59,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:49:59,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:49:59,514 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:49:59,514 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 20:49:59,514 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 20:49:59,515 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 20:49:59,515 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 20:49:59,515 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 20:49:59,515 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 20:49:59,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:49:59,517 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:49:59,517 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:49:59,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:49:59,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:49:59,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:49:59,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 20:49:59,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 20:49:59,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 20:49:59,520 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:49:59,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:49:59,520 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 20:49:59,521 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:49:59,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 20:49:59,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:49:59,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:49:59,522 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 20:49:59,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:49:59,522 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:49:59,523 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:49:59,524 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 20:49:59,525 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 20:49:59,526 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3cd199824dccc6e7aa84d2a9a82b4dda750590d9 [2019-11-28 20:49:59,828 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:49:59,846 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:49:59,849 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:49:59,851 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:49:59,852 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:49:59,852 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/phases_2-1.c [2019-11-28 20:49:59,921 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d513b83ff/9c7b80584a50415396b788623e0f94d7/FLAGa1653f13c [2019-11-28 20:50:00,399 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:50:00,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/phases_2-1.c [2019-11-28 20:50:00,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d513b83ff/9c7b80584a50415396b788623e0f94d7/FLAGa1653f13c [2019-11-28 20:50:00,779 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d513b83ff/9c7b80584a50415396b788623e0f94d7 [2019-11-28 20:50:00,783 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:50:00,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:50:00,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:50:00,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:50:00,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:50:00,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:50:00" (1/1) ... [2019-11-28 20:50:00,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68a60da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:00, skipping insertion in model container [2019-11-28 20:50:00,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:50:00" (1/1) ... [2019-11-28 20:50:00,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:50:00,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:50:01,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:50:01,051 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:50:01,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:50:01,085 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:50:01,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:01 WrapperNode [2019-11-28 20:50:01,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:50:01,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:50:01,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:50:01,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:50:01,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:01" (1/1) ... [2019-11-28 20:50:01,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:01" (1/1) ... [2019-11-28 20:50:01,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:50:01,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:50:01,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:50:01,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:50:01,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:01" (1/1) ... [2019-11-28 20:50:01,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:01" (1/1) ... [2019-11-28 20:50:01,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:01" (1/1) ... [2019-11-28 20:50:01,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:01" (1/1) ... [2019-11-28 20:50:01,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:01" (1/1) ... [2019-11-28 20:50:01,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:01" (1/1) ... [2019-11-28 20:50:01,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:01" (1/1) ... [2019-11-28 20:50:01,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:50:01,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:50:01,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:50:01,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:50:01,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:01" (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 [2019-11-28 20:50:01,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:50:01,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:50:01,431 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:50:01,432 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-28 20:50:01,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:50:01 BoogieIcfgContainer [2019-11-28 20:50:01,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:50:01,434 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 20:50:01,434 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 20:50:01,437 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 20:50:01,438 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:50:01,438 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 08:50:00" (1/3) ... [2019-11-28 20:50:01,440 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@520ef575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:50:01, skipping insertion in model container [2019-11-28 20:50:01,440 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:50:01,440 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:01" (2/3) ... [2019-11-28 20:50:01,441 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@520ef575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:50:01, skipping insertion in model container [2019-11-28 20:50:01,441 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:50:01,441 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:50:01" (3/3) ... [2019-11-28 20:50:01,443 INFO L371 chiAutomizerObserver]: Analyzing ICFG phases_2-1.c [2019-11-28 20:50:01,494 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 20:50:01,495 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 20:50:01,495 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 20:50:01,495 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:50:01,495 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:50:01,496 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 20:50:01,496 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:50:01,496 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 20:50:01,512 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-28 20:50:01,533 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 20:50:01,533 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:50:01,533 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:50:01,540 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 20:50:01,540 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:50:01,540 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 20:50:01,540 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-28 20:50:01,541 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 20:50:01,542 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:50:01,542 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:50:01,542 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 20:50:01,542 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:50:01,549 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet1, main_#t~post2, main_~x~0, main_~y~0;main_~x~0 := 1;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 4#L16true assume !!(main_~y~0 % 4294967296 > 0); 7#L19-2true [2019-11-28 20:50:01,549 INFO L796 eck$LassoCheckResult]: Loop: 7#L19-2true assume !!(main_~x~0 % 4294967296 < main_~y~0 % 4294967296); 11#L19true assume main_~x~0 % 4294967296 < (if main_~y~0 % 4294967296 < 0 && 0 != main_~y~0 % 4294967296 % (main_~x~0 % 4294967296) then (if main_~x~0 % 4294967296 < 0 then main_~y~0 % 4294967296 / (main_~x~0 % 4294967296) - 1 else 1 + main_~y~0 % 4294967296 / (main_~x~0 % 4294967296)) else main_~y~0 % 4294967296 / (main_~x~0 % 4294967296)) % 4294967296;main_~x~0 := main_~x~0 * main_~x~0; 7#L19-2true [2019-11-28 20:50:01,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:01,555 INFO L82 PathProgramCache]: Analyzing trace with hash 998, now seen corresponding path program 1 times [2019-11-28 20:50:01,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:01,563 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134957243] [2019-11-28 20:50:01,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:01,652 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:50:01,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:01,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1444, now seen corresponding path program 1 times [2019-11-28 20:50:01,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:01,654 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991472308] [2019-11-28 20:50:01,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:01,661 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 20:50:01,661 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [106896069] [2019-11-28 20:50:01,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:50:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2019-11-28 20:50:01,736 WARN L168 FreeRefinementEngine]: Strategy CAMEL was unsuccessful and could not determine trace feasibility [2019-11-28 20:50:01,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:01,738 INFO L82 PathProgramCache]: Analyzing trace with hash 959561, now seen corresponding path program 1 times [2019-11-28 20:50:01,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:01,739 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031384042] [2019-11-28 20:50:01,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:01,745 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 20:50:01,746 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1456989540] [2019-11-28 20:50:01,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:50:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:01,820 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:50:01,983 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-11-28 20:50:02,119 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-11-28 20:50:02,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 08:50:02 BoogieIcfgContainer [2019-11-28 20:50:02,172 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 20:50:02,172 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:50:02,173 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:50:02,173 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:50:02,174 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:50:01" (3/4) ... [2019-11-28 20:50:02,177 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-28 20:50:02,219 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:50:02,220 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:50:02,222 INFO L168 Benchmark]: Toolchain (without parser) took 1436.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -128.4 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2019-11-28 20:50:02,222 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:50:02,223 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.79 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:50:02,224 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -196.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:50:02,225 INFO L168 Benchmark]: Boogie Preprocessor took 22.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:50:02,226 INFO L168 Benchmark]: RCFGBuilder took 229.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. [2019-11-28 20:50:02,227 INFO L168 Benchmark]: BuchiAutomizer took 738.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:50:02,228 INFO L168 Benchmark]: Witness Printer took 47.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:50:02,232 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 299.79 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 95.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -196.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 229.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 738.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 11.5 GB. * Witness Printer took 47.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 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 0.6s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. 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: 18]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {\result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@71c0b9a6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@b99fbf5=0, x=1, y=2} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 18]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] unsigned int x = 1; [L14] unsigned int y = __VERIFIER_nondet_uint(); [L16] COND FALSE !(!(y > 0)) Loop: [L18] COND TRUE x < y [L19] COND TRUE x < y / x [L20] x *= x End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...