./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-nla/dijkstra6-both-nt.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-nla/dijkstra6-both-nt.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 12afb8178f03cf9f30c3db13fe59541339718c2babf1801d998ad3c12365b61d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 19:49:28,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 19:49:28,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 19:49:28,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 19:49:28,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 19:49:28,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 19:49:28,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 19:49:28,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 19:49:28,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 19:49:28,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 19:49:28,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 19:49:28,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 19:49:28,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 19:49:28,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 19:49:28,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 19:49:28,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 19:49:28,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 19:49:28,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 19:49:28,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 19:49:28,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 19:49:28,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 19:49:28,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 19:49:28,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 19:49:28,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 19:49:28,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 19:49:28,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 19:49:28,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 19:49:28,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 19:49:28,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 19:49:28,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 19:49:28,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 19:49:28,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 19:49:28,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 19:49:28,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 19:49:28,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 19:49:28,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 19:49:28,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 19:49:28,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 19:49:28,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 19:49:28,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 19:49:28,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 19:49:28,570 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-22 19:49:28,588 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 19:49:28,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 19:49:28,591 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 19:49:28,591 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 19:49:28,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 19:49:28,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 19:49:28,592 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 19:49:28,593 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-22 19:49:28,593 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-22 19:49:28,593 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-22 19:49:28,593 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-22 19:49:28,594 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-22 19:49:28,594 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-22 19:49:28,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 19:49:28,594 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 19:49:28,594 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 19:49:28,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 19:49:28,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 19:49:28,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 19:49:28,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-22 19:49:28,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-22 19:49:28,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-22 19:49:28,595 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 19:49:28,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 19:49:28,596 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-22 19:49:28,596 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 19:49:28,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-22 19:49:28,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 19:49:28,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 19:49:28,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 19:49:28,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 19:49:28,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 19:49:28,598 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-22 19:49:28,598 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12afb8178f03cf9f30c3db13fe59541339718c2babf1801d998ad3c12365b61d [2021-12-22 19:49:28,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 19:49:28,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 19:49:28,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 19:49:28,786 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 19:49:28,786 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 19:49:28,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-nla/dijkstra6-both-nt.c [2021-12-22 19:49:28,826 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aefa2d7a9/8cfc8f220b1a4cc7995f010dd8f45324/FLAGa37e3cacd [2021-12-22 19:49:29,189 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 19:49:29,189 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-nla/dijkstra6-both-nt.c [2021-12-22 19:49:29,197 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aefa2d7a9/8cfc8f220b1a4cc7995f010dd8f45324/FLAGa37e3cacd [2021-12-22 19:49:29,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aefa2d7a9/8cfc8f220b1a4cc7995f010dd8f45324 [2021-12-22 19:49:29,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 19:49:29,569 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 19:49:29,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 19:49:29,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 19:49:29,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 19:49:29,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:49:29" (1/1) ... [2021-12-22 19:49:29,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ebf7196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:29, skipping insertion in model container [2021-12-22 19:49:29,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:49:29" (1/1) ... [2021-12-22 19:49:29,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 19:49:29,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 19:49:29,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:49:29,704 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 19:49:29,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:49:29,728 INFO L208 MainTranslator]: Completed translation [2021-12-22 19:49:29,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:29 WrapperNode [2021-12-22 19:49:29,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 19:49:29,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 19:49:29,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 19:49:29,731 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 19:49:29,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:29" (1/1) ... [2021-12-22 19:49:29,740 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:29" (1/1) ... [2021-12-22 19:49:29,752 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2021-12-22 19:49:29,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 19:49:29,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 19:49:29,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 19:49:29,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 19:49:29,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:29" (1/1) ... [2021-12-22 19:49:29,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:29" (1/1) ... [2021-12-22 19:49:29,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:29" (1/1) ... [2021-12-22 19:49:29,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:29" (1/1) ... [2021-12-22 19:49:29,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:29" (1/1) ... [2021-12-22 19:49:29,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:29" (1/1) ... [2021-12-22 19:49:29,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:29" (1/1) ... [2021-12-22 19:49:29,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 19:49:29,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 19:49:29,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 19:49:29,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 19:49:29,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:29" (1/1) ... [2021-12-22 19:49:29,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:49:29,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:49:29,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:49:29,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-22 19:49:29,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 19:49:29,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 19:49:29,882 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 19:49:29,883 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 19:49:29,988 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 19:49:29,994 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 19:49:29,994 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 19:49:29,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:49:29 BoogieIcfgContainer [2021-12-22 19:49:29,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 19:49:29,996 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-22 19:49:29,997 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-22 19:49:29,999 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-22 19:49:29,999 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 19:49:30,000 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.12 07:49:29" (1/3) ... [2021-12-22 19:49:30,001 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5bdf05fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.12 07:49:30, skipping insertion in model container [2021-12-22 19:49:30,001 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 19:49:30,001 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:49:29" (2/3) ... [2021-12-22 19:49:30,002 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5bdf05fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.12 07:49:30, skipping insertion in model container [2021-12-22 19:49:30,002 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 19:49:30,002 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:49:29" (3/3) ... [2021-12-22 19:49:30,003 INFO L388 chiAutomizerObserver]: Analyzing ICFG dijkstra6-both-nt.c [2021-12-22 19:49:30,053 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-22 19:49:30,053 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-22 19:49:30,053 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-22 19:49:30,053 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-22 19:49:30,054 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-22 19:49:30,054 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-22 19:49:30,054 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-22 19:49:30,054 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-22 19:49:30,065 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:49:30,079 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-22 19:49:30,079 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:49:30,079 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:49:30,084 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-22 19:49:30,084 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-22 19:49:30,084 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-22 19:49:30,084 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:49:30,085 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-22 19:49:30,086 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:49:30,086 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:49:30,086 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-22 19:49:30,086 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-22 19:49:30,091 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~n~0#1, main_~p~0#1, main_~q~0#1, main_~r~0#1, main_~h~0#1;havoc main_~n~0#1;havoc main_~p~0#1;havoc main_~q~0#1;havoc main_~r~0#1;havoc main_~h~0#1;main_~n~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := 0;main_~q~0#1 := 1;main_~r~0#1 := main_~n~0#1;main_~h~0#1 := 0; 8#L40true assume main_~q~0#1 > main_~n~0#1; 9#L51-1true [2021-12-22 19:49:30,092 INFO L793 eck$LassoCheckResult]: Loop: 9#L51-1true assume !!(0 == main_~p~0#1 * main_~p~0#1 - main_~n~0#1 * main_~q~0#1 + main_~q~0#1 * main_~r~0#1); 5#L51true assume !(4 * (if main_~q~0#1 < 0 && 0 != main_~q~0#1 % 4 then 1 + main_~q~0#1 / 4 else main_~q~0#1 / 4) == main_~q~0#1 && 2 * (if main_~p~0#1 < 0 && 0 != main_~p~0#1 % 2 then 1 + main_~p~0#1 / 2 else main_~p~0#1 / 2) == main_~p~0#1); 9#L51-1true [2021-12-22 19:49:30,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:49:30,099 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-22 19:49:30,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:49:30,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115558564] [2021-12-22 19:49:30,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:49:30,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:49:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:49:30,157 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:49:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:49:30,182 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:49:30,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:49:30,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1420, now seen corresponding path program 1 times [2021-12-22 19:49:30,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:49:30,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321863645] [2021-12-22 19:49:30,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:49:30,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:49:30,202 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:49:30,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030599246] [2021-12-22 19:49:30,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:49:30,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:49:30,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:49:30,220 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:49:30,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 19:49:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:49:30,243 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:49:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:49:30,248 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:49:30,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:49:30,249 INFO L85 PathProgramCache]: Analyzing trace with hash 28693997, now seen corresponding path program 1 times [2021-12-22 19:49:30,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:49:30,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591987472] [2021-12-22 19:49:30,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:49:30,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:49:30,254 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:49:30,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168360610] [2021-12-22 19:49:30,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:49:30,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:49:30,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:49:30,256 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:49:30,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 19:49:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:49:30,289 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:49:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:49:30,294 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:49:42,344 WARN L227 SmtUtils]: Spent 12.05s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-12-22 19:49:56,191 WARN L227 SmtUtils]: Spent 13.77s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-22 19:50:09,457 WARN L227 SmtUtils]: Spent 13.23s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 269] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-12-22 19:50:09,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.12 07:50:09 BoogieIcfgContainer [2021-12-22 19:50:09,514 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-22 19:50:09,514 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 19:50:09,514 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 19:50:09,515 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 19:50:09,515 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:49:29" (3/4) ... [2021-12-22 19:50:09,517 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-22 19:50:09,538 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 19:50:09,540 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 19:50:09,541 INFO L158 Benchmark]: Toolchain (without parser) took 39971.78ms. Allocated memory was 104.9MB in the beginning and 169.9MB in the end (delta: 65.0MB). Free memory was 80.7MB in the beginning and 105.4MB in the end (delta: -24.7MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. [2021-12-22 19:50:09,542 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 104.9MB. Free memory is still 63.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 19:50:09,543 INFO L158 Benchmark]: CACSL2BoogieTranslator took 160.54ms. Allocated memory was 104.9MB in the beginning and 169.9MB in the end (delta: 65.0MB). Free memory was 80.5MB in the beginning and 148.0MB in the end (delta: -67.5MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2021-12-22 19:50:09,543 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.32ms. Allocated memory is still 169.9MB. Free memory was 147.6MB in the beginning and 146.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 19:50:09,544 INFO L158 Benchmark]: Boogie Preprocessor took 10.69ms. Allocated memory is still 169.9MB. Free memory was 146.3MB in the beginning and 145.5MB in the end (delta: 744.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 19:50:09,544 INFO L158 Benchmark]: RCFGBuilder took 231.79ms. Allocated memory is still 169.9MB. Free memory was 145.5MB in the beginning and 136.8MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 19:50:09,545 INFO L158 Benchmark]: BuchiAutomizer took 39517.50ms. Allocated memory is still 169.9MB. Free memory was 136.5MB in the beginning and 107.1MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2021-12-22 19:50:09,547 INFO L158 Benchmark]: Witness Printer took 25.72ms. Allocated memory is still 169.9MB. Free memory was 106.8MB in the beginning and 105.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 19:50:09,549 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 104.9MB. Free memory is still 63.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 160.54ms. Allocated memory was 104.9MB in the beginning and 169.9MB in the end (delta: 65.0MB). Free memory was 80.5MB in the beginning and 148.0MB in the end (delta: -67.5MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.32ms. Allocated memory is still 169.9MB. Free memory was 147.6MB in the beginning and 146.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 10.69ms. Allocated memory is still 169.9MB. Free memory was 146.3MB in the beginning and 145.5MB in the end (delta: 744.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 231.79ms. Allocated memory is still 169.9MB. Free memory was 145.5MB in the beginning and 136.8MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 39517.50ms. Allocated memory is still 169.9MB. Free memory was 136.5MB in the beginning and 107.1MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 25.72ms. Allocated memory is still 169.9MB. Free memory was 106.8MB in the beginning and 105.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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 39.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 39.4s. 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: 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: 41]: 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 {h=0, q=1, r=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2455ed50=0, p=0, n=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 41]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L22] int n, p, q, r, h; [L24] n = __VERIFIER_nondet_int() [L26] p = 0 [L27] q = 1 [L28] r = n [L29] h = 0 [L40] COND TRUE q > n Loop: [L41] COND TRUE p * p - n * q + q * r == 0 [L51] COND FALSE !(4 * (q / 4) == q && 2 * (p / 2) == p) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-22 19:50:09,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 19:50:09,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-22 19:50:10,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)