./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-nla/egcd2-both-nt.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3a877d22 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/egcd2-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 4b8e7a0340ae3342090517f2a88c3de1beaa3d83173c8c0fc0ae95ebc1f42c80 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:59:37,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:59:37,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:59:38,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:59:38,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:59:38,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:59:38,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:59:38,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:59:38,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:59:38,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:59:38,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:59:38,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:59:38,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:59:38,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:59:38,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:59:38,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:59:38,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:59:38,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:59:38,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:59:38,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:59:38,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:59:38,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:59:38,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:59:38,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:59:38,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:59:38,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:59:38,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:59:38,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:59:38,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:59:38,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:59:38,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:59:38,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:59:38,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:59:38,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:59:38,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:59:38,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:59:38,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:59:38,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:59:38,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:59:38,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:59:38,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:59:38,075 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-15 16:59:38,090 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:59:38,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:59:38,091 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:59:38,091 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:59:38,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:59:38,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:59:38,093 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:59:38,093 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-15 16:59:38,093 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-15 16:59:38,093 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-15 16:59:38,093 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-15 16:59:38,093 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-15 16:59:38,094 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-15 16:59:38,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:59:38,094 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 16:59:38,094 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:59:38,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:59:38,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 16:59:38,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:59:38,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-15 16:59:38,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-15 16:59:38,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-15 16:59:38,095 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 16:59:38,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 16:59:38,095 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-15 16:59:38,096 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:59:38,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-15 16:59:38,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:59:38,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:59:38,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:59:38,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 16:59:38,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:59:38,097 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-15 16:59:38,097 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b8e7a0340ae3342090517f2a88c3de1beaa3d83173c8c0fc0ae95ebc1f42c80 [2021-12-15 16:59:38,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:59:38,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:59:38,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:59:38,280 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:59:38,288 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:59:38,290 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-nla/egcd2-both-nt.c [2021-12-15 16:59:38,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1de7a7dff/13abb3e4af6d4d57add81fcdf9dc70ca/FLAG993886be2 [2021-12-15 16:59:38,647 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:59:38,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-nla/egcd2-both-nt.c [2021-12-15 16:59:38,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1de7a7dff/13abb3e4af6d4d57add81fcdf9dc70ca/FLAG993886be2 [2021-12-15 16:59:38,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1de7a7dff/13abb3e4af6d4d57add81fcdf9dc70ca [2021-12-15 16:59:38,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:59:38,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:59:38,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:59:38,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:59:38,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:59:38,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:59:38" (1/1) ... [2021-12-15 16:59:38,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16ccc519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38, skipping insertion in model container [2021-12-15 16:59:38,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:59:38" (1/1) ... [2021-12-15 16:59:38,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:59:38,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:59:38,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:59:38,801 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 16:59:38,815 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:59:38,823 INFO L208 MainTranslator]: Completed translation [2021-12-15 16:59:38,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38 WrapperNode [2021-12-15 16:59:38,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:59:38,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 16:59:38,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 16:59:38,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 16:59:38,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38" (1/1) ... [2021-12-15 16:59:38,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38" (1/1) ... [2021-12-15 16:59:38,846 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2021-12-15 16:59:38,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 16:59:38,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 16:59:38,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 16:59:38,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 16:59:38,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38" (1/1) ... [2021-12-15 16:59:38,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38" (1/1) ... [2021-12-15 16:59:38,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38" (1/1) ... [2021-12-15 16:59:38,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38" (1/1) ... [2021-12-15 16:59:38,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38" (1/1) ... [2021-12-15 16:59:38,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38" (1/1) ... [2021-12-15 16:59:38,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38" (1/1) ... [2021-12-15 16:59:38,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 16:59:38,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 16:59:38,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 16:59:38,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 16:59:38,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38" (1/1) ... [2021-12-15 16:59:38,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 16:59:38,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:59:38,892 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) [2021-12-15 16:59:38,915 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 [2021-12-15 16:59:38,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 16:59:38,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 16:59:38,969 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 16:59:38,970 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 16:59:39,040 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 16:59:39,045 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 16:59:39,045 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 16:59:39,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:59:39 BoogieIcfgContainer [2021-12-15 16:59:39,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 16:59:39,047 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-15 16:59:39,047 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-15 16:59:39,050 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-15 16:59:39,050 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 16:59:39,050 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.12 04:59:38" (1/3) ... [2021-12-15 16:59:39,051 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@aa6db0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 04:59:39, skipping insertion in model container [2021-12-15 16:59:39,051 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 16:59:39,052 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38" (2/3) ... [2021-12-15 16:59:39,052 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@aa6db0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 04:59:39, skipping insertion in model container [2021-12-15 16:59:39,053 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 16:59:39,053 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:59:39" (3/3) ... [2021-12-15 16:59:39,054 INFO L388 chiAutomizerObserver]: Analyzing ICFG egcd2-both-nt.c [2021-12-15 16:59:39,082 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-15 16:59:39,082 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-15 16:59:39,082 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-15 16:59:39,082 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-15 16:59:39,083 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-15 16:59:39,083 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-15 16:59:39,083 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-15 16:59:39,083 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-15 16:59:39,092 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 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) [2021-12-15 16:59:39,107 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-15 16:59:39,113 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 16:59:39,113 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 16:59:39,117 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-15 16:59:39,117 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-15 16:59:39,118 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-15 16:59:39,118 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 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) [2021-12-15 16:59:39,119 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-15 16:59:39,120 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 16:59:39,120 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 16:59:39,120 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-15 16:59:39,120 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-15 16:59:39,124 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~temp~0#1, main_~x~0#1, main_~y~0#1, main_~a~0#1, main_~b~0#1, main_~p~0#1, main_~q~0#1, main_~r~0#1, main_~s~0#1, main_~c~0#1, main_~k~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~a~0#1;havoc main_~b~0#1;havoc main_~p~0#1;havoc main_~q~0#1;havoc main_~r~0#1;havoc main_~s~0#1;havoc main_~c~0#1;havoc main_~k~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 6#L25true assume !(main_~x~0#1 < 1); 7#L28true assume !(main_~y~0#1 < 1);main_~a~0#1 := main_~x~0#1;main_~b~0#1 := main_~y~0#1;main_~p~0#1 := 1;main_~q~0#1 := 0;main_~r~0#1 := 0;main_~s~0#1 := 1;main_~c~0#1 := 0;main_~k~0#1 := 0; 13#L41-2true [2021-12-15 16:59:39,125 INFO L793 eck$LassoCheckResult]: Loop: 13#L41-2true assume !false; 12#L42true assume !!(0 != main_~b~0#1);main_~c~0#1 := main_~a~0#1;main_~k~0#1 := 0; 9#L47-2true assume !(main_~a~0#1 == main_~y~0#1 * main_~r~0#1 + main_~x~0#1 * main_~p~0#1); 5#L47-3true main_~a~0#1 := main_~b~0#1;main_~b~0#1 := main_~c~0#1;havoc main_~temp~0#1;main_~temp~0#1 := main_~p~0#1;main_~p~0#1 := main_~q~0#1;main_~q~0#1 := main_~temp~0#1 - main_~q~0#1 * main_~k~0#1;main_~temp~0#1 := main_~r~0#1;main_~r~0#1 := main_~s~0#1;main_~s~0#1 := main_~temp~0#1 - main_~s~0#1 * main_~k~0#1; 13#L41-2true [2021-12-15 16:59:39,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:59:39,129 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2021-12-15 16:59:39,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:59:39,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695979858] [2021-12-15 16:59:39,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:39,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:59:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:39,201 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 16:59:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:39,231 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 16:59:39,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:59:39,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1575180, now seen corresponding path program 1 times [2021-12-15 16:59:39,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:59:39,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355869307] [2021-12-15 16:59:39,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:39,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:59:39,247 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 16:59:39,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [453930407] [2021-12-15 16:59:39,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:39,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:59:39,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:59:39,251 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) [2021-12-15 16:59:39,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 16:59:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:39,303 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 16:59:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:39,342 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 16:59:39,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:59:39,343 INFO L85 PathProgramCache]: Analyzing trace with hash 179690867, now seen corresponding path program 1 times [2021-12-15 16:59:39,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:59:39,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074009972] [2021-12-15 16:59:39,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:39,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:59:39,348 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 16:59:39,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [78801890] [2021-12-15 16:59:39,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:39,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:59:39,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:59:39,373 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) [2021-12-15 16:59:39,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-15 16:59:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:59:39,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-15 16:59:39,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:59:39,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:59:39,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:59:39,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:59:39,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074009972] [2021-12-15 16:59:39,533 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-15 16:59:39,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78801890] [2021-12-15 16:59:39,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78801890] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:59:39,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:59:39,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:59:39,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882995101] [2021-12-15 16:59:39,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:59:39,620 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.getTrivialTransFormula(TransFormulaBuilder.java:285) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.synthesize(LassoCheck.java:548) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkLoopTermination(LassoCheck.java:944) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:834) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:252) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:457) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:397) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 16:59:39,626 INFO L158 Benchmark]: Toolchain (without parser) took 962.90ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 69.4MB in the beginning and 62.9MB in the end (delta: 6.6MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. [2021-12-15 16:59:39,627 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory was 56.4MB in the beginning and 56.3MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:59:39,629 INFO L158 Benchmark]: CACSL2BoogieTranslator took 160.91ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 69.1MB in the beginning and 104.6MB in the end (delta: -35.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 16:59:39,630 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.84ms. Allocated memory is still 127.9MB. Free memory was 104.6MB in the beginning and 103.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 16:59:39,631 INFO L158 Benchmark]: Boogie Preprocessor took 16.32ms. Allocated memory is still 127.9MB. Free memory was 103.3MB in the beginning and 102.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:59:39,632 INFO L158 Benchmark]: RCFGBuilder took 183.00ms. Allocated memory is still 127.9MB. Free memory was 102.2MB in the beginning and 93.3MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 16:59:39,635 INFO L158 Benchmark]: BuchiAutomizer took 577.16ms. Allocated memory is still 127.9MB. Free memory was 92.8MB in the beginning and 62.9MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2021-12-15 16:59:39,640 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory was 56.4MB in the beginning and 56.3MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 160.91ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 69.1MB in the beginning and 104.6MB in the end (delta: -35.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.84ms. Allocated memory is still 127.9MB. Free memory was 104.6MB in the beginning and 103.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.32ms. Allocated memory is still 127.9MB. Free memory was 103.3MB in the beginning and 102.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 183.00ms. Allocated memory is still 127.9MB. Free memory was 102.2MB in the beginning and 93.3MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 577.16ms. Allocated memory is still 127.9MB. Free memory was 92.8MB in the beginning and 62.9MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 16:59:39,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-15 16:59:39,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-15 16:59:40,080 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 Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*32bit*_Bitvector*.epf No suitable settings file found using Termination*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable