./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 ff03de63 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-ff03de6 [2021-12-21 21:59:07,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 21:59:07,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 21:59:07,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 21:59:07,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 21:59:07,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 21:59:07,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 21:59:07,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 21:59:07,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 21:59:07,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 21:59:07,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 21:59:07,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 21:59:07,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 21:59:07,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 21:59:07,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 21:59:07,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 21:59:07,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 21:59:07,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 21:59:07,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 21:59:07,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 21:59:07,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 21:59:07,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 21:59:07,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 21:59:07,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 21:59:07,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 21:59:07,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 21:59:07,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 21:59:07,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 21:59:07,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 21:59:07,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 21:59:07,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 21:59:07,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 21:59:07,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 21:59:07,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 21:59:07,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 21:59:07,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 21:59:07,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 21:59:07,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 21:59:07,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 21:59:07,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 21:59:07,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 21:59:07,094 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-21 21:59:07,112 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 21:59:07,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 21:59:07,113 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 21:59:07,113 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 21:59:07,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 21:59:07,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 21:59:07,115 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 21:59:07,115 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-21 21:59:07,115 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-21 21:59:07,115 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-21 21:59:07,116 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-21 21:59:07,116 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-21 21:59:07,116 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-21 21:59:07,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 21:59:07,116 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 21:59:07,116 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 21:59:07,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 21:59:07,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 21:59:07,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 21:59:07,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-21 21:59:07,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-21 21:59:07,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-21 21:59:07,118 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 21:59:07,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 21:59:07,118 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-21 21:59:07,118 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 21:59:07,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-21 21:59:07,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 21:59:07,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 21:59:07,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 21:59:07,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 21:59:07,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 21:59:07,120 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-21 21:59:07,120 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12afb8178f03cf9f30c3db13fe59541339718c2babf1801d998ad3c12365b61d [2021-12-21 21:59:07,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 21:59:07,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 21:59:07,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 21:59:07,382 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 21:59:07,384 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 21:59:07,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-nla/dijkstra6-both-nt.c [2021-12-21 21:59:07,450 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75dd6107f/7a82389d4c1549bca37048d258e7f140/FLAGdfb35fe17 [2021-12-21 21:59:07,846 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 21:59:07,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-nla/dijkstra6-both-nt.c [2021-12-21 21:59:07,852 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75dd6107f/7a82389d4c1549bca37048d258e7f140/FLAGdfb35fe17 [2021-12-21 21:59:07,861 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75dd6107f/7a82389d4c1549bca37048d258e7f140 [2021-12-21 21:59:07,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 21:59:07,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 21:59:07,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 21:59:07,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 21:59:07,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 21:59:07,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:59:07" (1/1) ... [2021-12-21 21:59:07,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35c98962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:07, skipping insertion in model container [2021-12-21 21:59:07,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:59:07" (1/1) ... [2021-12-21 21:59:07,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 21:59:07,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 21:59:08,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 21:59:08,030 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 21:59:08,053 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 21:59:08,063 INFO L208 MainTranslator]: Completed translation [2021-12-21 21:59:08,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:08 WrapperNode [2021-12-21 21:59:08,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 21:59:08,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 21:59:08,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 21:59:08,069 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 21:59:08,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:08" (1/1) ... [2021-12-21 21:59:08,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:08" (1/1) ... [2021-12-21 21:59:08,093 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2021-12-21 21:59:08,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 21:59:08,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 21:59:08,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 21:59:08,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 21:59:08,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:08" (1/1) ... [2021-12-21 21:59:08,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:08" (1/1) ... [2021-12-21 21:59:08,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:08" (1/1) ... [2021-12-21 21:59:08,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:08" (1/1) ... [2021-12-21 21:59:08,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:08" (1/1) ... [2021-12-21 21:59:08,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:08" (1/1) ... [2021-12-21 21:59:08,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:08" (1/1) ... [2021-12-21 21:59:08,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 21:59:08,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 21:59:08,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 21:59:08,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 21:59:08,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:08" (1/1) ... [2021-12-21 21:59:08,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:59:08,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:59:08,134 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) [2021-12-21 21:59:08,141 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 [2021-12-21 21:59:08,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 21:59:08,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 21:59:08,198 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 21:59:08,199 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 21:59:08,270 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 21:59:08,275 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 21:59:08,276 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 21:59:08,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:59:08 BoogieIcfgContainer [2021-12-21 21:59:08,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 21:59:08,278 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-21 21:59:08,278 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-21 21:59:08,281 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-21 21:59:08,281 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 21:59:08,281 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.12 09:59:07" (1/3) ... [2021-12-21 21:59:08,282 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1f8c5960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 09:59:08, skipping insertion in model container [2021-12-21 21:59:08,282 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 21:59:08,282 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:59:08" (2/3) ... [2021-12-21 21:59:08,283 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1f8c5960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 09:59:08, skipping insertion in model container [2021-12-21 21:59:08,283 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 21:59:08,283 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:59:08" (3/3) ... [2021-12-21 21:59:08,284 INFO L388 chiAutomizerObserver]: Analyzing ICFG dijkstra6-both-nt.c [2021-12-21 21:59:08,320 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-21 21:59:08,321 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-21 21:59:08,321 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-21 21:59:08,321 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-21 21:59:08,321 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-21 21:59:08,321 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-21 21:59:08,322 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-21 21:59:08,322 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-21 21:59:08,349 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) [2021-12-21 21:59:08,361 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-21 21:59:08,375 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:59:08,375 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:59:08,380 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-21 21:59:08,381 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-21 21:59:08,381 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-21 21:59:08,381 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) [2021-12-21 21:59:08,382 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-21 21:59:08,382 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:59:08,383 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:59:08,383 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-21 21:59:08,383 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-21 21:59:08,388 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 [2021-12-21 21:59:08,396 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 [2021-12-21 21:59:08,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:59:08,402 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-21 21:59:08,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:59:08,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839717082] [2021-12-21 21:59:08,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:59:08,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:59:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:59:08,505 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:59:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:59:08,539 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:59:08,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:59:08,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1420, now seen corresponding path program 1 times [2021-12-21 21:59:08,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:59:08,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236716896] [2021-12-21 21:59:08,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:59:08,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:59:08,566 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 21:59:08,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056720233] [2021-12-21 21:59:08,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:59:08,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 21:59:08,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:59:08,575 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) [2021-12-21 21:59:08,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 21:59:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:59:08,625 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:59:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:59:08,632 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:59:08,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:59:08,637 INFO L85 PathProgramCache]: Analyzing trace with hash 28693997, now seen corresponding path program 1 times [2021-12-21 21:59:08,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:59:08,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728734276] [2021-12-21 21:59:08,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:59:08,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:59:08,643 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 21:59:08,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1859656919] [2021-12-21 21:59:08,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:59:08,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 21:59:08,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:59:08,647 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) [2021-12-21 21:59:08,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 21:59:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:59:08,690 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:59:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:59:08,699 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:59:20,756 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) [2021-12-21 21:59:32,984 WARN L227 SmtUtils]: Spent 12.17s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-21 21:59:46,758 WARN L227 SmtUtils]: Spent 13.73s 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) [2021-12-21 21:59:46,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.12 09:59:46 BoogieIcfgContainer [2021-12-21 21:59:46,810 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-21 21:59:46,810 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 21:59:46,811 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 21:59:46,811 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 21:59:46,816 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:59:08" (3/4) ... [2021-12-21 21:59:46,818 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-21 21:59:46,846 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 21:59:46,846 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 21:59:46,847 INFO L158 Benchmark]: Toolchain (without parser) took 38983.42ms. Allocated memory was 83.9MB in the beginning and 109.1MB in the end (delta: 25.2MB). Free memory was 50.8MB in the beginning and 69.0MB in the end (delta: -18.2MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2021-12-21 21:59:46,848 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 62.4MB in the beginning and 62.4MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 21:59:46,848 INFO L158 Benchmark]: CACSL2BoogieTranslator took 202.47ms. Allocated memory is still 83.9MB. Free memory was 50.7MB in the beginning and 62.7MB in the end (delta: -12.1MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2021-12-21 21:59:46,849 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.33ms. Allocated memory is still 83.9MB. Free memory was 62.7MB in the beginning and 61.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 21:59:46,849 INFO L158 Benchmark]: Boogie Preprocessor took 13.43ms. Allocated memory is still 83.9MB. Free memory was 61.2MB in the beginning and 60.3MB in the end (delta: 920.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 21:59:46,850 INFO L158 Benchmark]: RCFGBuilder took 169.76ms. Allocated memory is still 83.9MB. Free memory was 60.3MB in the beginning and 51.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 21:59:46,851 INFO L158 Benchmark]: BuchiAutomizer took 38531.62ms. Allocated memory was 83.9MB in the beginning and 109.1MB in the end (delta: 25.2MB). Free memory was 51.9MB in the beginning and 70.6MB in the end (delta: -18.7MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2021-12-21 21:59:46,855 INFO L158 Benchmark]: Witness Printer took 35.91ms. Allocated memory is still 109.1MB. Free memory was 70.2MB in the beginning and 69.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 21:59:46,858 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 62.4MB in the beginning and 62.4MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 202.47ms. Allocated memory is still 83.9MB. Free memory was 50.7MB in the beginning and 62.7MB in the end (delta: -12.1MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.33ms. Allocated memory is still 83.9MB. Free memory was 62.7MB in the beginning and 61.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.43ms. Allocated memory is still 83.9MB. Free memory was 61.2MB in the beginning and 60.3MB in the end (delta: 920.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 169.76ms. Allocated memory is still 83.9MB. Free memory was 60.3MB in the beginning and 51.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 38531.62ms. Allocated memory was 83.9MB in the beginning and 109.1MB in the end (delta: 25.2MB). Free memory was 51.9MB in the beginning and 70.6MB in the end (delta: -18.7MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * Witness Printer took 35.91ms. Allocated memory is still 109.1MB. Free memory was 70.2MB in the beginning and 69.0MB in the end (delta: 1.2MB). 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 38.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 38.4s. 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@4299d82c=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! [2021-12-21 21:59:46,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 21:59:47,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 21:59:47,295 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)