./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-nla/fermat3-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/fermat3-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 8231fe22d480c49c0b9eb27131f9ee49d0bb3e08baee8b3f4ce46ec4be87fd26 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:59:43,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:59:43,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:59:43,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:59:43,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:59:43,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:59:43,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:59:43,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:59:43,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:59:43,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:59:43,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:59:43,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:59:43,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:59:43,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:59:43,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:59:43,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:59:43,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:59:43,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:59:43,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:59:43,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:59:43,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:59:43,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:59:43,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:59:43,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:59:43,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:59:43,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:59:43,233 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:59:43,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:59:43,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:59:43,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:59:43,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:59:43,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:59:43,238 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:59:43,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:59:43,240 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:59:43,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:59:43,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:59:43,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:59:43,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:59:43,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:59:43,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:59:43,244 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-15 16:59:43,281 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:59:43,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:59:43,282 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:59:43,282 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:59:43,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:59:43,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:59:43,284 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:59:43,284 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-15 16:59:43,284 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-15 16:59:43,285 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-15 16:59:43,285 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-15 16:59:43,286 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-15 16:59:43,286 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-15 16:59:43,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:59:43,286 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 16:59:43,286 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:59:43,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:59:43,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 16:59:43,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:59:43,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-15 16:59:43,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-15 16:59:43,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-15 16:59:43,288 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 16:59:43,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 16:59:43,289 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-15 16:59:43,289 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:59:43,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-15 16:59:43,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:59:43,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:59:43,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:59:43,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 16:59:43,290 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:59:43,291 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-15 16:59:43,291 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8231fe22d480c49c0b9eb27131f9ee49d0bb3e08baee8b3f4ce46ec4be87fd26 [2021-12-15 16:59:43,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:59:43,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:59:43,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:59:43,525 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:59:43,526 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:59:43,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-nla/fermat3-both-nt.c [2021-12-15 16:59:43,592 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4894d4c58/97185dff169d48afaa3376b00aeea66d/FLAGe6eccfe59 [2021-12-15 16:59:43,985 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:59:43,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-nla/fermat3-both-nt.c [2021-12-15 16:59:43,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4894d4c58/97185dff169d48afaa3376b00aeea66d/FLAGe6eccfe59 [2021-12-15 16:59:44,413 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4894d4c58/97185dff169d48afaa3376b00aeea66d [2021-12-15 16:59:44,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:59:44,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:59:44,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:59:44,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:59:44,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:59:44,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:59:44" (1/1) ... [2021-12-15 16:59:44,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54975fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:44, skipping insertion in model container [2021-12-15 16:59:44,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:59:44" (1/1) ... [2021-12-15 16:59:44,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:59:44,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:59:44,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:59:44,620 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 16:59:44,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:59:44,642 INFO L208 MainTranslator]: Completed translation [2021-12-15 16:59:44,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:44 WrapperNode [2021-12-15 16:59:44,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:59:44,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 16:59:44,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 16:59:44,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 16:59:44,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:44" (1/1) ... [2021-12-15 16:59:44,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:44" (1/1) ... [2021-12-15 16:59:44,667 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 46 [2021-12-15 16:59:44,668 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 16:59:44,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 16:59:44,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 16:59:44,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 16:59:44,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:44" (1/1) ... [2021-12-15 16:59:44,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:44" (1/1) ... [2021-12-15 16:59:44,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:44" (1/1) ... [2021-12-15 16:59:44,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:44" (1/1) ... [2021-12-15 16:59:44,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:44" (1/1) ... [2021-12-15 16:59:44,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:44" (1/1) ... [2021-12-15 16:59:44,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:44" (1/1) ... [2021-12-15 16:59:44,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 16:59:44,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 16:59:44,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 16:59:44,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 16:59:44,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:44" (1/1) ... [2021-12-15 16:59:44,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 16:59:44,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:59:44,710 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 16:59:44,713 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 16:59:44,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 16:59:44,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 16:59:44,776 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 16:59:44,777 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 16:59:44,855 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 16:59:44,860 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 16:59:44,861 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 16:59:44,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:59:44 BoogieIcfgContainer [2021-12-15 16:59:44,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 16:59:44,863 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-15 16:59:44,863 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-15 16:59:44,866 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-15 16:59:44,867 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 16:59:44,867 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.12 04:59:44" (1/3) ... [2021-12-15 16:59:44,868 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6f8cd3a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 04:59:44, skipping insertion in model container [2021-12-15 16:59:44,868 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 16:59:44,869 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:44" (2/3) ... [2021-12-15 16:59:44,869 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6f8cd3a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 04:59:44, skipping insertion in model container [2021-12-15 16:59:44,869 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 16:59:44,869 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:59:44" (3/3) ... [2021-12-15 16:59:44,870 INFO L388 chiAutomizerObserver]: Analyzing ICFG fermat3-both-nt.c [2021-12-15 16:59:44,905 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-15 16:59:44,905 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-15 16:59:44,905 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-15 16:59:44,905 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-15 16:59:44,905 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-15 16:59:44,906 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-15 16:59:44,906 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-15 16:59:44,906 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-15 16:59:44,917 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 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 16:59:44,931 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-15 16:59:44,932 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 16:59:44,932 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 16:59:44,936 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-15 16:59:44,937 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-15 16:59:44,937 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-15 16:59:44,937 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 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 16:59:44,938 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-15 16:59:44,939 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 16:59:44,939 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 16:59:44,939 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-15 16:59:44,939 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-15 16:59:44,945 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 11#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~nondet3#1, main_#t~post4#1, main_#t~post5#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, main_~cc~0#1, main_~kk~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; 7#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;main_~cc~0#1 := 0;main_~kk~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 12#L38-2true [2021-12-15 16:59:44,945 INFO L793 eck$LassoCheckResult]: Loop: 12#L38-2true assume !!(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 - 4 * (main_~A~0#1 + main_~r~0#1) + main_~cc~0#1 < main_~kk~0#1);main_~c~0#1 := 0;main_~k~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~r~0#1 := main_~r~0#1 - main_~v~0#1;main_~v~0#1 := 2 + main_~v~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#L51-2true assume !true; 10#L51-3true main_#t~post5#1 := main_~cc~0#1;main_~cc~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 12#L38-2true [2021-12-15 16:59:44,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:59:44,951 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2021-12-15 16:59:44,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:59:44,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414458573] [2021-12-15 16:59:44,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:44,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:59:45,008 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 16:59:45,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271261438] [2021-12-15 16:59:45,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:45,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:59:45,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:59:45,012 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 16:59:45,013 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 16:59:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:45,057 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 16:59:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:45,076 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 16:59:45,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:59:45,079 INFO L85 PathProgramCache]: Analyzing trace with hash 50998, now seen corresponding path program 1 times [2021-12-15 16:59:45,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:59:45,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588865137] [2021-12-15 16:59:45,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:45,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:59:45,084 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 16:59:45,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40447818] [2021-12-15 16:59:45,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:45,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:59:45,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:59:45,099 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 16:59:45,161 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 16:59:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:59:45,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 16:59:45,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:59:45,211 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 16:59:45,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:59:45,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:59:45,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588865137] [2021-12-15 16:59:45,213 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-15 16:59:45,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40447818] [2021-12-15 16:59:45,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40447818] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:59:45,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:59:45,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:59:45,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236527145] [2021-12-15 16:59:45,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:59:45,232 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 16:59:45,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:59:45,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 16:59:45,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 16:59:45,271 INFO L87 Difference]: Start difference. First operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 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) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 16:59:45,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:59:45,276 INFO L93 Difference]: Finished difference Result 11 states and 14 transitions. [2021-12-15 16:59:45,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 16:59:45,283 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 14 transitions. [2021-12-15 16:59:45,285 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-15 16:59:45,289 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2021-12-15 16:59:45,290 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-12-15 16:59:45,290 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-12-15 16:59:45,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2021-12-15 16:59:45,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 16:59:45,292 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-12-15 16:59:45,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2021-12-15 16:59:45,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-12-15 16:59:45,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 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 16:59:45,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2021-12-15 16:59:45,313 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-12-15 16:59:45,313 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-12-15 16:59:45,313 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-15 16:59:45,314 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2021-12-15 16:59:45,314 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-15 16:59:45,315 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 16:59:45,315 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 16:59:45,315 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-15 16:59:45,315 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-15 16:59:45,316 INFO L791 eck$LassoCheckResult]: Stem: 38#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 39#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post4#1, main_#t~post5#1, main_~c~0#1, main_~k~0#1, main_~A~0#1, main_~R~0#1, main_~u~0#1, main_~v~0#1, main_~r~0#1, main_~cc~0#1, main_~kk~0#1;havoc main_~A~0#1;havoc main_~R~0#1;havoc main_~u~0#1;havoc main_~v~0#1;havoc main_~r~0#1;main_~A~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~R~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 42#L27 assume !((main_~R~0#1 - 1) * (main_~R~0#1 - 1) >= main_~A~0#1); 40#L30 assume !(1 != (if main_~A~0#1 < 0 && 0 != main_~A~0#1 % 2 then main_~A~0#1 % 2 - 2 else main_~A~0#1 % 2));main_~u~0#1 := 1 + 2 * main_~R~0#1;main_~v~0#1 := 1;main_~r~0#1 := main_~R~0#1 * main_~R~0#1 - main_~A~0#1;main_~cc~0#1 := 0;main_~kk~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 41#L38-2 [2021-12-15 16:59:45,316 INFO L793 eck$LassoCheckResult]: Loop: 41#L38-2 assume !!(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 - 4 * (main_~A~0#1 + main_~r~0#1) + main_~cc~0#1 < main_~kk~0#1);main_~c~0#1 := 0;main_~k~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~r~0#1 := main_~r~0#1 - main_~v~0#1;main_~v~0#1 := 2 + main_~v~0#1;main_#t~post4#1 := main_~c~0#1;main_~c~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 36#L51-2 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); 37#L51-3 main_#t~post5#1 := main_~cc~0#1;main_~cc~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 41#L38-2 [2021-12-15 16:59:45,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:59:45,317 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 2 times [2021-12-15 16:59:45,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:59:45,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822112294] [2021-12-15 16:59:45,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:45,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:59:45,323 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 16:59:45,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [204724790] [2021-12-15 16:59:45,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-15 16:59:45,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:59:45,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:59:45,360 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 16:59:45,361 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 16:59:45,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-15 16:59:45,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-12-15 16:59:45,385 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 16:59:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:45,398 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 16:59:45,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:59:45,399 INFO L85 PathProgramCache]: Analyzing trace with hash 50874, now seen corresponding path program 1 times [2021-12-15 16:59:45,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:59:45,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795581277] [2021-12-15 16:59:45,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:45,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:59:45,417 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 16:59:45,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271420578] [2021-12-15 16:59:45,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:45,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:59:45,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:59:45,424 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:59:45,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-15 16:59:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:45,448 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 16:59:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:45,478 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 16:59:45,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:59:45,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1806911859, now seen corresponding path program 1 times [2021-12-15 16:59:45,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:59:45,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326940682] [2021-12-15 16:59:45,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:45,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:59:45,483 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 16:59:45,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1245612306] [2021-12-15 16:59:45,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:45,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:59:45,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:59:45,491 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:59:45,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-15 16:59:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:59:45,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-15 16:59:45,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:59:45,735 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 16:59:45,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:59:45,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:59:45,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326940682] [2021-12-15 16:59:45,737 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-15 16:59:45,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245612306] [2021-12-15 16:59:45,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245612306] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:59:45,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:59:45,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 16:59:45,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072423480] [2021-12-15 16:59:45,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:59:45,848 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 16:59:45,852 INFO L158 Benchmark]: Toolchain (without parser) took 1433.14ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 61.2MB in the beginning and 73.1MB in the end (delta: -11.9MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2021-12-15 16:59:45,852 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory is still 48.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:59:45,853 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.46ms. Allocated memory is still 92.3MB. Free memory was 61.0MB in the beginning and 70.6MB in the end (delta: -9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 16:59:45,853 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.16ms. Allocated memory is still 92.3MB. Free memory was 70.6MB in the beginning and 69.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:59:45,854 INFO L158 Benchmark]: Boogie Preprocessor took 15.51ms. Allocated memory is still 92.3MB. Free memory was 69.3MB in the beginning and 68.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 16:59:45,854 INFO L158 Benchmark]: RCFGBuilder took 178.12ms. Allocated memory is still 92.3MB. Free memory was 68.1MB in the beginning and 58.8MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 16:59:45,855 INFO L158 Benchmark]: BuchiAutomizer took 987.50ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 58.8MB in the beginning and 73.1MB in the end (delta: -14.3MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2021-12-15 16:59:45,857 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 92.3MB. Free memory is still 48.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.46ms. Allocated memory is still 92.3MB. Free memory was 61.0MB in the beginning and 70.6MB in the end (delta: -9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.16ms. Allocated memory is still 92.3MB. Free memory was 70.6MB in the beginning and 69.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.51ms. Allocated memory is still 92.3MB. Free memory was 69.3MB in the beginning and 68.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 178.12ms. Allocated memory is still 92.3MB. Free memory was 68.1MB in the beginning and 58.8MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 987.50ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 58.8MB in the beginning and 73.1MB in the end (delta: -14.3MB). Peak memory consumption was 6.7MB. 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 16:59:45,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-15 16:59:46,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-15 16:59:46,296 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 16:59:46,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-15 16:59:46,697 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 16:59:46,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with 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