./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-nla/ps6-both-t.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 791161d1 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/ps6-both-t.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 8714f16c1ccb3a98ee40083c859e54a4506b8ba33fb8c9b1ab2e7b84d1cea7ec --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 14:22:16,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 14:22:16,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 14:22:16,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 14:22:16,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 14:22:16,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 14:22:16,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 14:22:16,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 14:22:16,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 14:22:16,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 14:22:16,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 14:22:16,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 14:22:16,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 14:22:16,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 14:22:16,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 14:22:16,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 14:22:16,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 14:22:16,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 14:22:16,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 14:22:16,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 14:22:16,292 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 14:22:16,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 14:22:16,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 14:22:16,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 14:22:16,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 14:22:16,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 14:22:16,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 14:22:16,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 14:22:16,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 14:22:16,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 14:22:16,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 14:22:16,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 14:22:16,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 14:22:16,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 14:22:16,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 14:22:16,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 14:22:16,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 14:22:16,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 14:22:16,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 14:22:16,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 14:22:16,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 14:22:16,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 14:22:16,308 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-07-23 14:22:16,333 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 14:22:16,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 14:22:16,334 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 14:22:16,334 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 14:22:16,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 14:22:16,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 14:22:16,336 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 14:22:16,336 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-23 14:22:16,336 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-23 14:22:16,337 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-23 14:22:16,337 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-23 14:22:16,337 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-23 14:22:16,337 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-23 14:22:16,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 14:22:16,338 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 14:22:16,338 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 14:22:16,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 14:22:16,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 14:22:16,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 14:22:16,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-23 14:22:16,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-23 14:22:16,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-23 14:22:16,338 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 14:22:16,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 14:22:16,339 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-23 14:22:16,339 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 14:22:16,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-23 14:22:16,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 14:22:16,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 14:22:16,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 14:22:16,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 14:22:16,340 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-23 14:22:16,341 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8714f16c1ccb3a98ee40083c859e54a4506b8ba33fb8c9b1ab2e7b84d1cea7ec [2022-07-23 14:22:16,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 14:22:16,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 14:22:16,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 14:22:16,573 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 14:22:16,574 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 14:22:16,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-nla/ps6-both-t.c [2022-07-23 14:22:16,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56dcb1943/9e20ca15bdca4fc6a7efe1310c1a2cc2/FLAGf12f85b03 [2022-07-23 14:22:17,033 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 14:22:17,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-nla/ps6-both-t.c [2022-07-23 14:22:17,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56dcb1943/9e20ca15bdca4fc6a7efe1310c1a2cc2/FLAGf12f85b03 [2022-07-23 14:22:17,474 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56dcb1943/9e20ca15bdca4fc6a7efe1310c1a2cc2 [2022-07-23 14:22:17,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 14:22:17,477 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 14:22:17,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 14:22:17,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 14:22:17,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 14:22:17,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:22:17" (1/1) ... [2022-07-23 14:22:17,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e5995d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:22:17, skipping insertion in model container [2022-07-23 14:22:17,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:22:17" (1/1) ... [2022-07-23 14:22:17,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 14:22:17,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 14:22:17,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:22:17,664 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 14:22:17,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:22:17,692 INFO L208 MainTranslator]: Completed translation [2022-07-23 14:22:17,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:22:17 WrapperNode [2022-07-23 14:22:17,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 14:22:17,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 14:22:17,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 14:22:17,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 14:22:17,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:22:17" (1/1) ... [2022-07-23 14:22:17,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:22:17" (1/1) ... [2022-07-23 14:22:17,717 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2022-07-23 14:22:17,717 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 14:22:17,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 14:22:17,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 14:22:17,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 14:22:17,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:22:17" (1/1) ... [2022-07-23 14:22:17,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:22:17" (1/1) ... [2022-07-23 14:22:17,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:22:17" (1/1) ... [2022-07-23 14:22:17,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:22:17" (1/1) ... [2022-07-23 14:22:17,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:22:17" (1/1) ... [2022-07-23 14:22:17,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:22:17" (1/1) ... [2022-07-23 14:22:17,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:22:17" (1/1) ... [2022-07-23 14:22:17,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 14:22:17,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 14:22:17,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 14:22:17,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 14:22:17,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:22:17" (1/1) ... [2022-07-23 14:22:17,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:22:17,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:22:17,754 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) [2022-07-23 14:22:17,763 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 [2022-07-23 14:22:17,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 14:22:17,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 14:22:17,838 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 14:22:17,840 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 14:22:17,922 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 14:22:17,927 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 14:22:17,928 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-23 14:22:17,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:22:17 BoogieIcfgContainer [2022-07-23 14:22:17,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 14:22:17,930 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-23 14:22:17,930 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-23 14:22:17,933 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-23 14:22:17,933 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:22:17,933 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.07 02:22:17" (1/3) ... [2022-07-23 14:22:17,934 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e9e82f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:22:17, skipping insertion in model container [2022-07-23 14:22:17,934 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:22:17,934 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:22:17" (2/3) ... [2022-07-23 14:22:17,934 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e9e82f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:22:17, skipping insertion in model container [2022-07-23 14:22:17,934 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:22:17,934 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:22:17" (3/3) ... [2022-07-23 14:22:17,939 INFO L354 chiAutomizerObserver]: Analyzing ICFG ps6-both-t.c [2022-07-23 14:22:17,995 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-23 14:22:17,998 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-23 14:22:17,998 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-23 14:22:17,998 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-23 14:22:17,998 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-23 14:22:17,998 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-23 14:22:17,999 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-23 14:22:17,999 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-23 14:22:18,005 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2022-07-23 14:22:18,019 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-23 14:22:18,020 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:22:18,020 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:22:18,024 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 14:22:18,025 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-23 14:22:18,025 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-23 14:22:18,025 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2022-07-23 14:22:18,026 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-23 14:22:18,026 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:22:18,026 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:22:18,027 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 14:22:18,027 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-23 14:22:18,033 INFO L752 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~k~0#1, main_~y~0#1, main_~x~0#1, main_~c~0#1;havoc main_~k~0#1;havoc main_~y~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~k~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := 0;main_~x~0#1 := 0;main_~c~0#1 := 0; 3#L25-2true [2022-07-23 14:22:18,033 INFO L754 eck$LassoCheckResult]: Loop: 3#L25-2true assume !false; 6#L28true assume !!(main_~c~0#1 + -2 * main_~y~0#1 * main_~y~0#1 * main_~y~0#1 * main_~y~0#1 * main_~y~0#1 * main_~y~0#1 - 6 * main_~y~0#1 * main_~y~0#1 * main_~y~0#1 * main_~y~0#1 * main_~y~0#1 - 5 * main_~y~0#1 * main_~y~0#1 * main_~y~0#1 * main_~y~0#1 + main_~y~0#1 * main_~y~0#1 + 12 * main_~x~0#1 < main_~k~0#1);main_~c~0#1 := 1 + main_~c~0#1;main_~y~0#1 := 1 + main_~y~0#1;main_~x~0#1 := main_~y~0#1 * main_~y~0#1 * main_~y~0#1 * main_~y~0#1 * main_~y~0#1 + main_~x~0#1; 3#L25-2true [2022-07-23 14:22:18,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:22:18,044 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-23 14:22:18,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:22:18,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458809866] [2022-07-23 14:22:18,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:22:18,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:22:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:22:18,129 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:22:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:22:18,156 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:22:18,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:22:18,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2022-07-23 14:22:18,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:22:18,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149478691] [2022-07-23 14:22:18,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:22:18,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:22:18,181 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 14:22:18,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [899666905] [2022-07-23 14:22:18,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:22:18,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 14:22:18,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:22:18,187 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) [2022-07-23 14:22:18,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-23 14:22:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:22:18,237 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:22:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:22:18,260 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:22:18,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:22:18,261 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-07-23 14:22:18,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:22:18,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108827279] [2022-07-23 14:22:18,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:22:18,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:22:18,267 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 14:22:18,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1351577856] [2022-07-23 14:22:18,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:22:18,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 14:22:18,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:22:18,295 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) [2022-07-23 14:22:18,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-23 14:22:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:22:18,403 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:22:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:22:18,412 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:22:18,508 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:22:18,509 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:22:18,509 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:22:18,509 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:22:18,509 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:22:18,509 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:22:18,509 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:22:18,510 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:22:18,510 INFO L133 ssoRankerPreferences]: Filename of dumped script: ps6-both-t.c_Iteration1_Loop [2022-07-23 14:22:18,510 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:22:18,510 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:22:18,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:22:18,680 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:22:18,681 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:22:18,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:22:18,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:22:18,724 INFO L229 MonitoredProcess]: Starting monitored process 4 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) [2022-07-23 14:22:18,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-07-23 14:22:18,727 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:22:18,727 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:22:18,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-07-23 14:22:18,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:22:18,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:22:18,761 INFO L229 MonitoredProcess]: Starting monitored process 5 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) [2022-07-23 14:22:18,768 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:22:18,768 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:22:18,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-07-23 14:22:18,788 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:22:18,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-07-23 14:22:18,806 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:22:18,806 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:22:18,806 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:22:18,806 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:22:18,806 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:22:18,806 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:22:18,806 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:22:18,806 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:22:18,807 INFO L133 ssoRankerPreferences]: Filename of dumped script: ps6-both-t.c_Iteration1_Loop [2022-07-23 14:22:18,807 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:22:18,807 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:22:18,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true