./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-nla/fermat1-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/fermat1-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 cabfd8eedd0de2c1f9a158c6a9fe3332f40d8b10920296676c706c8fde162c58 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:59:38,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:59:38,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:59:38,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:59:38,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:59:38,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:59:38,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:59:38,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:59:38,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:59:38,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:59:38,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:59:38,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:59:38,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:59:38,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:59:38,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:59:38,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:59:38,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:59:38,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:59:38,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:59:38,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:59:38,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:59:38,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:59:38,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:59:38,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:59:38,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:59:38,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:59:38,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:59:38,849 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:59:38,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:59:38,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:59:38,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:59:38,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:59:38,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:59:38,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:59:38,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:59:38,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:59:38,854 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:59:38,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:59:38,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:59:38,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:59:38,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:59:38,856 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-15 16:59:38,885 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:59:38,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:59:38,887 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:59:38,887 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:59:38,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:59:38,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:59:38,888 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:59:38,888 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-15 16:59:38,888 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-15 16:59:38,888 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-15 16:59:38,889 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-15 16:59:38,889 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-15 16:59:38,889 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-15 16:59:38,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:59:38,890 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 16:59:38,890 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:59:38,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:59:38,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 16:59:38,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:59:38,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-15 16:59:38,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-15 16:59:38,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-15 16:59:38,891 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 16:59:38,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 16:59:38,891 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-15 16:59:38,891 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:59:38,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-15 16:59:38,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:59:38,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:59:38,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:59:38,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 16:59:38,892 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:59:38,894 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-15 16:59:38,894 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cabfd8eedd0de2c1f9a158c6a9fe3332f40d8b10920296676c706c8fde162c58 [2021-12-15 16:59:39,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:59:39,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:59:39,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:59:39,154 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:59:39,154 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:59:39,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-nla/fermat1-both-nt.c [2021-12-15 16:59:39,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dff9a70c/81427074ffda4f86920600bc329448d6/FLAG648886bc4 [2021-12-15 16:59:39,489 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:59:39,490 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-nla/fermat1-both-nt.c [2021-12-15 16:59:39,498 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dff9a70c/81427074ffda4f86920600bc329448d6/FLAG648886bc4 [2021-12-15 16:59:39,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dff9a70c/81427074ffda4f86920600bc329448d6 [2021-12-15 16:59:39,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:59:39,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:59:39,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:59:39,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:59:39,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:59:39,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:59:39" (1/1) ... [2021-12-15 16:59:39,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ddda0d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:39, skipping insertion in model container [2021-12-15 16:59:39,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:59:39" (1/1) ... [2021-12-15 16:59:39,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:59:39,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:59:40,066 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:59:40,069 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 16:59:40,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:59:40,089 INFO L208 MainTranslator]: Completed translation [2021-12-15 16:59:40,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:40 WrapperNode [2021-12-15 16:59:40,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:59:40,091 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 16:59:40,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 16:59:40,092 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 16:59:40,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:40" (1/1) ... [2021-12-15 16:59:40,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:40" (1/1) ... [2021-12-15 16:59:40,110 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 39 [2021-12-15 16:59:40,111 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 16:59:40,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 16:59:40,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 16:59:40,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 16:59:40,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:40" (1/1) ... [2021-12-15 16:59:40,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:40" (1/1) ... [2021-12-15 16:59:40,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:40" (1/1) ... [2021-12-15 16:59:40,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:40" (1/1) ... [2021-12-15 16:59:40,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:40" (1/1) ... [2021-12-15 16:59:40,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:40" (1/1) ... [2021-12-15 16:59:40,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:40" (1/1) ... [2021-12-15 16:59:40,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 16:59:40,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 16:59:40,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 16:59:40,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 16:59:40,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:40" (1/1) ... [2021-12-15 16:59:40,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 16:59:40,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:59:40,164 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 16:59:40,185 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 16:59:40,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 16:59:40,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 16:59:40,244 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 16:59:40,245 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 16:59:40,351 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 16:59:40,355 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 16:59:40,355 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 16:59:40,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:59:40 BoogieIcfgContainer [2021-12-15 16:59:40,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 16:59:40,358 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-15 16:59:40,358 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-15 16:59:40,360 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-15 16:59:40,360 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 16:59:40,361 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.12 04:59:39" (1/3) ... [2021-12-15 16:59:40,362 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@44992833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 04:59:40, skipping insertion in model container [2021-12-15 16:59:40,362 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 16:59:40,362 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:40" (2/3) ... [2021-12-15 16:59:40,363 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@44992833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 04:59:40, skipping insertion in model container [2021-12-15 16:59:40,363 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 16:59:40,363 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:59:40" (3/3) ... [2021-12-15 16:59:40,364 INFO L388 chiAutomizerObserver]: Analyzing ICFG fermat1-both-nt.c [2021-12-15 16:59:40,408 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-15 16:59:40,408 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-15 16:59:40,408 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-15 16:59:40,409 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-15 16:59:40,409 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-15 16:59:40,409 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-15 16:59:40,409 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-15 16:59:40,409 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-15 16:59:40,423 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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 16:59:40,433 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-15 16:59:40,434 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 16:59:40,434 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 16:59:40,437 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-15 16:59:40,437 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-15 16:59:40,437 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-15 16:59:40,437 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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 16:59:40,438 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-15 16:59:40,439 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 16:59:40,439 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 16:59:40,439 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-15 16:59:40,439 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-15 16:59:40,443 INFO L791 eck$LassoCheckResult]: Stem: 5#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_#t~nondet2#1, main_#t~post3#1, main_#t~post4#1, main_~c~0#1, main_~k~0#1, main_~A~0#1, main_~R~0#1, main_~u~0#1, main_~v~0#1, main_~r~0#1;havoc main_~A~0#1;havoc main_~R~0#1;havoc main_~u~0#1;havoc main_~v~0#1;havoc main_~r~0#1;main_~A~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~R~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 8#L27true assume !((main_~R~0#1 - 1) * (main_~R~0#1 - 1) >= main_~A~0#1); 6#L30true assume !(1 != (if main_~A~0#1 < 0 && 0 != main_~A~0#1 % 2 then main_~A~0#1 % 2 - 2 else main_~A~0#1 % 2));main_~u~0#1 := 1 + 2 * main_~R~0#1;main_~v~0#1 := 1;main_~r~0#1 := main_~R~0#1 * main_~R~0#1 - main_~A~0#1; 4#L37-2true [2021-12-15 16:59:40,443 INFO L793 eck$LassoCheckResult]: Loop: 4#L37-2true assume !!(4 * (main_~A~0#1 + main_~r~0#1) == main_~u~0#1 * main_~u~0#1 - main_~v~0#1 * main_~v~0#1 - 2 * main_~u~0#1 + 2 * main_~v~0#1);main_~c~0#1 := 0;main_~k~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~r~0#1 := main_~r~0#1 - main_~v~0#1;main_~v~0#1 := 2 + main_~v~0#1;main_#t~post3#1 := main_~c~0#1;main_~c~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1;main_~r~0#1 := main_~r~0#1 + main_~u~0#1;main_~u~0#1 := 2 + main_~u~0#1;main_#t~post4#1 := main_~c~0#1;main_~c~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 4#L37-2true [2021-12-15 16:59:40,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:59:40,449 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2021-12-15 16:59:40,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:59:40,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448878343] [2021-12-15 16:59:40,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:40,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:59:40,546 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 16:59:40,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [149113241] [2021-12-15 16:59:40,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:40,547 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:59:40,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:59:40,549 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 16:59:40,551 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 16:59:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:40,591 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 16:59:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:40,604 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 16:59:40,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:59:40,621 INFO L85 PathProgramCache]: Analyzing trace with hash 52, now seen corresponding path program 1 times [2021-12-15 16:59:40,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:59:40,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554966243] [2021-12-15 16:59:40,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:40,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:59:40,624 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 16:59:40,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [771158477] [2021-12-15 16:59:40,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:40,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:59:40,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:59:40,639 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 16:59:40,655 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 16:59:40,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:40,700 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 16:59:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:40,706 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 16:59:40,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:59:40,707 INFO L85 PathProgramCache]: Analyzing trace with hash 28695853, now seen corresponding path program 1 times [2021-12-15 16:59:40,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:59:40,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866291000] [2021-12-15 16:59:40,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:40,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:59:40,710 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 16:59:40,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1909327448] [2021-12-15 16:59:40,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:40,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:59:40,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:59:40,712 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:59:40,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-15 16:59:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:40,735 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 16:59:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:40,745 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 16:59:40,800 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$LassoCheckResult.(LassoCheck.java:855) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:252) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:457) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:397) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$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 16:59:40,803 INFO L158 Benchmark]: Toolchain (without parser) took 863.86ms. Allocated memory was 100.7MB in the beginning and 161.5MB in the end (delta: 60.8MB). Free memory was 62.7MB in the beginning and 123.6MB in the end (delta: -60.9MB). Peak memory consumption was 192.7kB. Max. memory is 16.1GB. [2021-12-15 16:59:40,803 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 100.7MB. Free memory is still 78.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:59:40,804 INFO L158 Benchmark]: CACSL2BoogieTranslator took 151.88ms. Allocated memory is still 100.7MB. Free memory was 62.6MB in the beginning and 53.5MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 16:59:40,804 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.19ms. Allocated memory is still 100.7MB. Free memory was 53.5MB in the beginning and 52.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:59:40,804 INFO L158 Benchmark]: Boogie Preprocessor took 20.88ms. Allocated memory is still 100.7MB. Free memory was 52.1MB in the beginning and 51.2MB in the end (delta: 897.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 16:59:40,805 INFO L158 Benchmark]: RCFGBuilder took 224.19ms. Allocated memory was 100.7MB in the beginning and 161.5MB in the end (delta: 60.8MB). Free memory was 51.1MB in the beginning and 135.8MB in the end (delta: -84.7MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2021-12-15 16:59:40,806 INFO L158 Benchmark]: BuchiAutomizer took 444.10ms. Allocated memory is still 161.5MB. Free memory was 135.8MB in the beginning and 123.6MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 16:59:40,808 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 100.7MB. Free memory is still 78.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 151.88ms. Allocated memory is still 100.7MB. Free memory was 62.6MB in the beginning and 53.5MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.19ms. Allocated memory is still 100.7MB. Free memory was 53.5MB in the beginning and 52.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.88ms. Allocated memory is still 100.7MB. Free memory was 52.1MB in the beginning and 51.2MB in the end (delta: 897.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 224.19ms. Allocated memory was 100.7MB in the beginning and 161.5MB in the end (delta: 60.8MB). Free memory was 51.1MB in the beginning and 135.8MB in the end (delta: -84.7MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * BuchiAutomizer took 444.10ms. Allocated memory is still 161.5MB. Free memory was 135.8MB in the beginning and 123.6MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. 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 16:59:40,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-15 16:59:41,064 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 16:59:41,261 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 16:59:41,462 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