./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 54858612 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-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-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 64bit --witnessprinter.graph.data.programhash fce4ad715fa5546a587c43eb09d1a8cb5dcde607 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 04:15:25,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:15:25,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:15:25,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:15:25,218 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:15:25,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:15:25,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:15:25,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:15:25,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:15:25,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:15:25,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:15:25,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:15:25,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:15:25,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:15:25,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:15:25,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:15:25,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:15:25,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:15:25,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:15:25,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:15:25,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:15:25,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:15:25,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:15:25,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:15:25,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:15:25,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:15:25,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:15:25,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:15:25,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:15:25,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:15:25,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:15:25,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:15:25,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:15:25,253 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:15:25,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:15:25,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:15:25,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:15:25,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:15:25,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:15:25,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:15:25,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:15:25,259 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-26 04:15:25,300 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:15:25,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:15:25,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:15:25,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:15:25,303 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:15:25,303 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 04:15:25,303 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 04:15:25,304 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 04:15:25,304 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 04:15:25,304 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 04:15:25,304 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 04:15:25,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:15:25,305 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:15:25,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:15:25,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:15:25,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 04:15:25,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 04:15:25,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 04:15:25,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:15:25,307 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 04:15:25,307 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:15:25,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 04:15:25,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:15:25,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:15:25,308 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 04:15:25,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:15:25,308 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:15:25,309 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:15:25,309 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 04:15:25,310 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 04:15:25,310 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fce4ad715fa5546a587c43eb09d1a8cb5dcde607 [2020-10-26 04:15:25,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:15:25,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:15:25,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:15:25,712 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:15:25,718 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:15:25,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c [2020-10-26 04:15:25,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f3c4cc20/a17db8862cc44f7097addc5b9710e115/FLAG2c34e5496 [2020-10-26 04:15:26,346 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:15:26,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c [2020-10-26 04:15:26,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f3c4cc20/a17db8862cc44f7097addc5b9710e115/FLAG2c34e5496 [2020-10-26 04:15:26,720 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f3c4cc20/a17db8862cc44f7097addc5b9710e115 [2020-10-26 04:15:26,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:15:26,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:15:26,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:15:26,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:15:26,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:15:26,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:15:26" (1/1) ... [2020-10-26 04:15:26,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f802a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:26, skipping insertion in model container [2020-10-26 04:15:26,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:15:26" (1/1) ... [2020-10-26 04:15:26,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:15:26,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:15:26,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:15:26,952 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:15:26,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:15:26,981 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:15:26,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:26 WrapperNode [2020-10-26 04:15:26,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:15:26,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:15:26,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:15:26,983 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:15:26,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:26" (1/1) ... [2020-10-26 04:15:26,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:26" (1/1) ... [2020-10-26 04:15:27,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:15:27,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:15:27,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:15:27,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:15:27,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:26" (1/1) ... [2020-10-26 04:15:27,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:26" (1/1) ... [2020-10-26 04:15:27,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:26" (1/1) ... [2020-10-26 04:15:27,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:26" (1/1) ... [2020-10-26 04:15:27,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:26" (1/1) ... [2020-10-26 04:15:27,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:26" (1/1) ... [2020-10-26 04:15:27,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:26" (1/1) ... [2020-10-26 04:15:27,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:15:27,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:15:27,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:15:27,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:15:27,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:27,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:15:27,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:15:27,260 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:15:27,261 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-26 04:15:27,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:15:27 BoogieIcfgContainer [2020-10-26 04:15:27,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:15:27,265 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 04:15:27,265 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 04:15:27,269 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 04:15:27,270 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:15:27,270 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 04:15:26" (1/3) ... [2020-10-26 04:15:27,271 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6ba64454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:15:27, skipping insertion in model container [2020-10-26 04:15:27,272 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:15:27,278 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:26" (2/3) ... [2020-10-26 04:15:27,279 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6ba64454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:15:27, skipping insertion in model container [2020-10-26 04:15:27,279 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:15:27,280 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:15:27" (3/3) ... [2020-10-26 04:15:27,282 INFO L373 chiAutomizerObserver]: Analyzing ICFG LeikeHeizmann-TACAS2014-Ex9.c [2020-10-26 04:15:27,342 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 04:15:27,342 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 04:15:27,342 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 04:15:27,343 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:15:27,343 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:15:27,343 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 04:15:27,343 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:15:27,344 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 04:15:27,360 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-26 04:15:27,394 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:15:27,394 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:15:27,395 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:15:27,410 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:15:27,411 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-26 04:15:27,411 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 04:15:27,411 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-26 04:15:27,413 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:15:27,415 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:15:27,415 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:15:27,416 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:15:27,416 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-26 04:15:27,430 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 9#L21-2true [2020-10-26 04:15:27,435 INFO L796 eck$LassoCheckResult]: Loop: 9#L21-2true assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 8#L18true assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1; 9#L21-2true [2020-10-26 04:15:27,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:27,449 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-26 04:15:27,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:27,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366381558] [2020-10-26 04:15:27,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:27,574 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:27,580 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:27,597 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:27,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:27,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-10-26 04:15:27,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:27,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414636014] [2020-10-26 04:15:27,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:27,614 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:27,622 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:27,624 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:27,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:27,626 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-10-26 04:15:27,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:27,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052370746] [2020-10-26 04:15:27,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:27,635 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:27,641 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:27,643 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:27,741 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:27,742 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:27,742 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:27,742 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:27,743 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:15:27,743 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:27,743 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:27,743 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:27,744 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration1_Loop [2020-10-26 04:15:27,744 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:27,744 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:27,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:27,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:27,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:27,899 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:27,900 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:27,909 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:27,909 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:15:27,924 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:27,925 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:27,963 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:27,963 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:27,969 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:27,969 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:28,007 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:28,007 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:28,055 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:15:28,055 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:28,101 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:15:28,104 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:28,104 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:28,104 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:28,104 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:28,104 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:15:28,104 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:28,105 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:28,105 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:28,105 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration1_Loop [2020-10-26 04:15:28,105 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:28,105 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:28,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:28,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:28,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:28,296 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2020-10-26 04:15:28,373 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:28,379 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:28,388 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:15:28,390 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:28,391 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:28,391 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:28,391 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:28,397 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:15:28,397 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:15:28,403 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:28,432 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:15:28,434 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:28,435 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:28,435 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:28,435 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:28,441 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:15:28,442 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:15:28,452 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:28,485 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:15:28,487 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:28,487 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:15:28,488 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:28,488 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:28,488 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:28,490 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:15:28,490 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:15:28,498 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:15:28,504 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-26 04:15:28,504 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:28,511 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:15:28,512 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:15:28,512 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:15:28,512 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:28,539 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:15:28,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:28,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:15:28,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:28,593 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:15:28,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:28,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:15:28,628 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-26 04:15:28,630 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-10-26 04:15:28,697 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 30 states and 39 transitions. Complement of second has 7 states. [2020-10-26 04:15:28,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-26 04:15:28,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:15:28,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2020-10-26 04:15:28,702 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 1 letters. Loop has 2 letters. [2020-10-26 04:15:28,703 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:28,703 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 3 letters. Loop has 2 letters. [2020-10-26 04:15:28,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:28,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 1 letters. Loop has 4 letters. [2020-10-26 04:15:28,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:28,705 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 39 transitions. [2020-10-26 04:15:28,709 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:15:28,713 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 10 states and 15 transitions. [2020-10-26 04:15:28,715 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-10-26 04:15:28,715 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-10-26 04:15:28,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2020-10-26 04:15:28,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:15:28,716 INFO L691 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2020-10-26 04:15:28,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2020-10-26 04:15:28,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-10-26 04:15:28,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-26 04:15:28,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2020-10-26 04:15:28,745 INFO L714 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2020-10-26 04:15:28,745 INFO L594 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2020-10-26 04:15:28,745 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 04:15:28,745 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2020-10-26 04:15:28,746 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:15:28,746 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:15:28,746 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:15:28,747 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-26 04:15:28,747 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:15:28,747 INFO L794 eck$LassoCheckResult]: Stem: 78#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 79#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 80#L18 [2020-10-26 04:15:28,748 INFO L796 eck$LassoCheckResult]: Loop: 80#L18 assume !(main_~q~0 < main_~p~0); 74#L21 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1; 75#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 80#L18 [2020-10-26 04:15:28,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:28,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-10-26 04:15:28,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:28,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92421488] [2020-10-26 04:15:28,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:28,755 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:28,759 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:28,760 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:28,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:28,761 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2020-10-26 04:15:28,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:28,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613603725] [2020-10-26 04:15:28,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:28,768 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:28,773 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:28,774 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:28,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:28,775 INFO L82 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2020-10-26 04:15:28,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:28,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262703594] [2020-10-26 04:15:28,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:28,785 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:28,791 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:28,793 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:28,821 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:28,821 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:28,821 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:28,822 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:28,822 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:15:28,822 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:28,822 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:28,822 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:28,822 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration2_Loop [2020-10-26 04:15:28,822 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:28,822 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:28,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:28,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:28,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:28,882 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:28,882 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:28,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:28,889 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:28,900 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:28,900 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:28,931 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:28,931 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:15:28,936 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:28,937 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:28,960 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:28,960 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:28,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:15:28,993 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:15:29,067 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:15:29,069 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:29,070 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:29,070 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:29,070 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:29,070 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:15:29,070 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:29,070 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:29,070 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:29,070 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration2_Loop [2020-10-26 04:15:29,070 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:29,071 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:29,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:29,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:29,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:29,129 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:29,129 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:29,142 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:15:29,144 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:29,144 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:29,144 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:29,144 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:29,147 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:15:29,147 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:29,155 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:29,183 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:15:29,186 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:29,186 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:29,186 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:29,186 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:29,194 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:15:29,194 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:15:29,218 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:29,247 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:15:29,248 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:29,248 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:15:29,249 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:29,249 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:29,249 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:29,250 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:15:29,250 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:15:29,253 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:15:29,273 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:15:29,273 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:29,280 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:15:29,280 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:15:29,280 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:15:29,280 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0) = 1*ULTIMATE.start_main_~p~0 Supporting invariants [] [2020-10-26 04:15:29,305 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:15:29,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:29,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:15:29,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:29,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:15:29,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:29,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:15:29,386 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-26 04:15:29,386 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7 Second operand 4 states. [2020-10-26 04:15:29,415 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 25 states and 38 transitions. Complement of second has 6 states. [2020-10-26 04:15:29,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-26 04:15:29,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:15:29,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-10-26 04:15:29,421 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 3 letters. [2020-10-26 04:15:29,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:29,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 5 letters. Loop has 3 letters. [2020-10-26 04:15:29,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:29,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 6 letters. [2020-10-26 04:15:29,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:29,423 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 38 transitions. [2020-10-26 04:15:29,432 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:15:29,435 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 23 states and 35 transitions. [2020-10-26 04:15:29,439 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-10-26 04:15:29,439 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-10-26 04:15:29,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 35 transitions. [2020-10-26 04:15:29,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:15:29,440 INFO L691 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2020-10-26 04:15:29,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 35 transitions. [2020-10-26 04:15:29,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-26 04:15:29,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-26 04:15:29,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 34 transitions. [2020-10-26 04:15:29,453 INFO L714 BuchiCegarLoop]: Abstraction has 22 states and 34 transitions. [2020-10-26 04:15:29,454 INFO L594 BuchiCegarLoop]: Abstraction has 22 states and 34 transitions. [2020-10-26 04:15:29,455 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-26 04:15:29,455 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 34 transitions. [2020-10-26 04:15:29,456 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:15:29,459 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:15:29,459 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:15:29,460 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-26 04:15:29,461 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:15:29,464 INFO L794 eck$LassoCheckResult]: Stem: 150#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 151#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 157#L18 assume !(main_~q~0 < main_~p~0); 146#L21 [2020-10-26 04:15:29,464 INFO L796 eck$LassoCheckResult]: Loop: 146#L21 assume !(main_~p~0 < main_~q~0); 147#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 160#L18 assume !(main_~q~0 < main_~p~0); 146#L21 [2020-10-26 04:15:29,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:29,466 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2020-10-26 04:15:29,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:29,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834826692] [2020-10-26 04:15:29,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:29,485 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:29,501 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:29,503 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:29,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:29,505 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2020-10-26 04:15:29,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:29,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140155400] [2020-10-26 04:15:29,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:29,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:15:29,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140155400] [2020-10-26 04:15:29,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:15:29,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 04:15:29,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380257525] [2020-10-26 04:15:29,562 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-26 04:15:29,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:15:29,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 04:15:29,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-26 04:15:29,566 INFO L87 Difference]: Start difference. First operand 22 states and 34 transitions. cyclomatic complexity: 16 Second operand 4 states. [2020-10-26 04:15:29,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:15:29,588 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2020-10-26 04:15:29,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 04:15:29,590 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 29 transitions. [2020-10-26 04:15:29,591 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:15:29,592 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2020-10-26 04:15:29,592 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 04:15:29,592 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 04:15:29,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 04:15:29,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:15:29,592 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:15:29,592 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:15:29,592 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:15:29,592 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-26 04:15:29,592 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-26 04:15:29,593 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:15:29,593 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-26 04:15:29,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 04:15:29 BoogieIcfgContainer [2020-10-26 04:15:29,600 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 04:15:29,600 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:15:29,601 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:15:29,601 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:15:29,601 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:15:27" (3/4) ... [2020-10-26 04:15:29,604 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 04:15:29,604 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:15:29,606 INFO L168 Benchmark]: Toolchain (without parser) took 2879.88 ms. Allocated memory was 50.3 MB in the beginning and 73.4 MB in the end (delta: 23.1 MB). Free memory was 27.7 MB in the beginning and 47.0 MB in the end (delta: -19.3 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2020-10-26 04:15:29,606 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 50.3 MB. Free memory is still 34.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:15:29,607 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.89 ms. Allocated memory is still 50.3 MB. Free memory was 27.1 MB in the beginning and 31.9 MB in the end (delta: -4.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-26 04:15:29,608 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.64 ms. Allocated memory is still 50.3 MB. Free memory was 31.9 MB in the beginning and 30.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:15:29,609 INFO L168 Benchmark]: Boogie Preprocessor took 18.41 ms. Allocated memory is still 50.3 MB. Free memory was 30.7 MB in the beginning and 29.9 MB in the end (delta: 775.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:15:29,609 INFO L168 Benchmark]: RCFGBuilder took 229.08 ms. Allocated memory is still 50.3 MB. Free memory was 29.8 MB in the beginning and 21.9 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-26 04:15:29,610 INFO L168 Benchmark]: BuchiAutomizer took 2335.13 ms. Allocated memory was 50.3 MB in the beginning and 73.4 MB in the end (delta: 23.1 MB). Free memory was 21.7 MB in the beginning and 47.6 MB in the end (delta: -25.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:15:29,611 INFO L168 Benchmark]: Witness Printer took 3.83 ms. Allocated memory is still 73.4 MB. Free memory was 47.6 MB in the beginning and 47.0 MB in the end (delta: 593.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:15:29,616 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 50.3 MB. Free memory is still 34.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 249.89 ms. Allocated memory is still 50.3 MB. Free memory was 27.1 MB in the beginning and 31.9 MB in the end (delta: -4.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.64 ms. Allocated memory is still 50.3 MB. Free memory was 31.9 MB in the beginning and 30.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.41 ms. Allocated memory is still 50.3 MB. Free memory was 30.7 MB in the beginning and 29.9 MB in the end (delta: 775.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 229.08 ms. Allocated memory is still 50.3 MB. Free memory was 29.8 MB in the beginning and 21.9 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2335.13 ms. Allocated memory was 50.3 MB in the beginning and 73.4 MB in the end (delta: 23.1 MB). Free memory was 21.7 MB in the beginning and 47.6 MB in the end (delta: -25.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.83 ms. Allocated memory is still 73.4 MB. Free memory was 47.6 MB in the beginning and 47.0 MB in the end (delta: 593.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function q and consists of 5 locations. One deterministic module has affine ranking function p and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.2s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 22 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 22 SDslu, 9 SDs, 0 SdLazy, 38 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax192 hnf100 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf111 neg100 sie120 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 23ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...