./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/Cairo.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/Cairo.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 4ee0473dc6d7092e83742edafdde9370f3b93e25 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 04:13:18,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:13:18,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:13:18,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:13:18,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:13:18,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:13:18,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:13:18,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:13:18,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:13:18,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:13:18,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:13:18,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:13:18,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:13:18,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:13:18,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:13:18,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:13:18,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:13:18,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:13:18,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:13:18,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:13:18,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:13:18,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:13:18,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:13:18,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:13:18,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:13:18,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:13:18,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:13:18,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:13:18,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:13:18,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:13:18,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:13:18,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:13:18,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:13:18,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:13:18,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:13:18,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:13:18,429 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:13:18,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:13:18,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:13:18,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:13:18,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:13:18,435 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-26 04:13:18,484 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:13:18,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:13:18,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:13:18,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:13:18,489 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:13:18,489 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 04:13:18,489 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 04:13:18,489 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 04:13:18,490 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 04:13:18,490 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 04:13:18,491 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 04:13:18,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:13:18,492 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:13:18,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:13:18,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:13:18,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 04:13:18,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 04:13:18,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 04:13:18,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:13:18,494 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 04:13:18,494 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:13:18,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 04:13:18,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:13:18,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:13:18,495 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 04:13:18,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:13:18,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:13:18,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:13:18,496 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 04:13:18,498 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 04:13:18,499 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ee0473dc6d7092e83742edafdde9370f3b93e25 [2020-10-26 04:13:18,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:13:19,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:13:19,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:13:19,030 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:13:19,030 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:13:19,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Cairo.c [2020-10-26 04:13:19,113 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3676e54da/b6ad5aa71ac948d286e92ee9cc0b33de/FLAGaf0dbdff6 [2020-10-26 04:13:19,849 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:13:19,850 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Cairo.c [2020-10-26 04:13:19,861 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3676e54da/b6ad5aa71ac948d286e92ee9cc0b33de/FLAGaf0dbdff6 [2020-10-26 04:13:20,239 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3676e54da/b6ad5aa71ac948d286e92ee9cc0b33de [2020-10-26 04:13:20,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:13:20,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:13:20,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:13:20,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:13:20,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:13:20,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:13:20" (1/1) ... [2020-10-26 04:13:20,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52dc2a3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:13:20, skipping insertion in model container [2020-10-26 04:13:20,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:13:20" (1/1) ... [2020-10-26 04:13:20,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:13:20,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:13:20,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:13:20,524 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:13:20,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:13:20,557 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:13:20,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:13:20 WrapperNode [2020-10-26 04:13:20,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:13:20,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:13:20,560 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:13:20,560 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:13:20,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:13:20" (1/1) ... [2020-10-26 04:13:20,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:13:20" (1/1) ... [2020-10-26 04:13:20,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:13:20,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:13:20,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:13:20,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:13:20,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:13:20" (1/1) ... [2020-10-26 04:13:20,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:13:20" (1/1) ... [2020-10-26 04:13:20,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:13:20" (1/1) ... [2020-10-26 04:13:20,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:13:20" (1/1) ... [2020-10-26 04:13:20,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:13:20" (1/1) ... [2020-10-26 04:13:20,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:13:20" (1/1) ... [2020-10-26 04:13:20,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:13:20" (1/1) ... [2020-10-26 04:13:20,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:13:20,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:13:20,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:13:20,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:13:20,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:13:20" (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 04:13:20,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:13:20,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:13:20,901 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:13:20,901 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-26 04:13:20,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:13:20 BoogieIcfgContainer [2020-10-26 04:13:20,905 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:13:20,907 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 04:13:20,907 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 04:13:20,912 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 04:13:20,914 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:13:20,914 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 04:13:20" (1/3) ... [2020-10-26 04:13:20,917 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6f461aff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:13:20, skipping insertion in model container [2020-10-26 04:13:20,917 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:13:20,917 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:13:20" (2/3) ... [2020-10-26 04:13:20,918 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6f461aff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:13:20, skipping insertion in model container [2020-10-26 04:13:20,918 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:13:20,918 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:13:20" (3/3) ... [2020-10-26 04:13:20,920 INFO L373 chiAutomizerObserver]: Analyzing ICFG Cairo.c [2020-10-26 04:13:21,001 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 04:13:21,001 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 04:13:21,002 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 04:13:21,002 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:13:21,002 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:13:21,002 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 04:13:21,003 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:13:21,003 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 04:13:21,022 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-10-26 04:13:21,046 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-26 04:13:21,046 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:13:21,047 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:13:21,055 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-26 04:13:21,055 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-26 04:13:21,056 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 04:13:21,056 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-10-26 04:13:21,057 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-26 04:13:21,058 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:13:21,058 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:13:21,059 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-26 04:13:21,059 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-26 04:13:21,069 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 9#L20true assume main_~x~0 > 0; 5#L21-2true [2020-10-26 04:13:21,070 INFO L796 eck$LassoCheckResult]: Loop: 5#L21-2true assume !!(0 != main_~x~0);main_~x~0 := main_~x~0 - 1; 5#L21-2true [2020-10-26 04:13:21,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:13:21,079 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2020-10-26 04:13:21,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:13:21,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699605715] [2020-10-26 04:13:21,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:13:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:13:21,205 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:13:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:13:21,218 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:13:21,239 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:13:21,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:13:21,247 INFO L82 PathProgramCache]: Analyzing trace with hash 44, now seen corresponding path program 1 times [2020-10-26 04:13:21,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:13:21,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098049224] [2020-10-26 04:13:21,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:13:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:13:21,276 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:13:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:13:21,286 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:13:21,289 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:13:21,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:13:21,312 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2020-10-26 04:13:21,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:13:21,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688818185] [2020-10-26 04:13:21,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:13:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:13:21,331 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:13:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:13:21,340 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:13:21,346 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:13:21,530 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:13:21,531 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:13:21,532 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:13:21,532 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:13:21,532 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:13:21,532 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:13:21,533 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:13:21,533 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:13:21,533 INFO L133 ssoRankerPreferences]: Filename of dumped script: Cairo.c_Iteration1_Loop [2020-10-26 04:13:21,533 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:13:21,534 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:13:21,564 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 04:13:21,587 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 04:13:21,627 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 04:13:21,799 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:13:21,800 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) [2020-10-26 04:13:21,822 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:13:21,822 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:13:21,835 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:13:21,835 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) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:13:21,885 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:13:21,885 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:13:21,891 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:13:21,891 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) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:13:21,927 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:13:21,927 INFO L160 nArgumentSynthesizer]: Using integer mode. 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) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:13:21,969 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:13:21,970 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:13:21,989 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:13:21,989 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=-4} Honda state: {ULTIMATE.start_main_~x~0=-4} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 8, 14] Nus: [0, 0] [2020-10-26 04:13:22,043 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:13:22,043 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:13:22,043 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:13:22,044 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:13:22,044 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:13:22,044 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:13:22,044 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:13:22,045 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:13:22,045 INFO L133 ssoRankerPreferences]: Filename of dumped script: Cairo.c_Iteration1_Lasso [2020-10-26 04:13:22,045 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:13:22,045 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:13:22,048 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 04:13:22,052 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 04:13:22,056 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 04:13:22,061 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 04:13:22,064 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 04:13:22,148 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:13:22,148 INFO L404 LassoAnalysis]: Checking for nontermination... 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 04:13:22,157 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:13:22,157 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:13:22,161 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:13:22,161 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 04:13:22,185 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:13:22,186 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:13:22,189 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:13:22,190 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_2=0} Honda state: {v_rep~unnamed0~0~false_2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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) [2020-10-26 04:13:22,230 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:13:22,231 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:13:22,236 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:13:22,236 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_2=1} Honda state: {v_rep~unnamed0~0~true_2=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:13:22,276 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:13:22,277 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:13:22,286 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:13:22,287 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:13:22,313 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:13:22,313 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 04:13:22,363 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:13:22,364 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:13:22,405 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:13:22,407 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:13:22,407 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:13:22,407 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:13:22,407 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:13:22,407 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:13:22,407 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:13:22,407 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:13:22,408 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:13:22,408 INFO L133 ssoRankerPreferences]: Filename of dumped script: Cairo.c_Iteration1_Lasso [2020-10-26 04:13:22,408 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:13:22,408 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:13:22,412 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 04:13:22,418 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 04:13:22,423 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 04:13:22,426 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 04:13:22,436 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 04:13:22,500 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:13:22,507 INFO L489 LassoAnalysis]: Using template 'affine'. 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 04:13:22,517 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 04:13:22,520 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:13:22,520 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:13:22,520 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:13:22,521 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:13:22,527 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:13:22,527 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:13:22,533 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:13:22,594 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 04:13:22,596 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:13:22,596 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:13:22,596 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:13:22,597 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:13:22,600 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:13:22,601 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:13:22,606 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 13 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 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:13:22,652 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 04:13:22,655 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:13:22,656 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:13:22,656 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:13:22,656 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:13:22,656 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:13:22,660 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:13:22,660 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:13:22,672 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 04:13:22,756 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 04:13:22,760 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:13:22,761 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:13:22,761 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-26 04:13:22,761 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:13:22,778 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2020-10-26 04:13:22,779 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2020-10-26 04:13:22,801 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:13:22,833 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2020-10-26 04:13:22,833 INFO L444 ModelExtractionUtils]: 2 out of 11 variables were initially zero. Simplification set additionally 6 variables to zero. 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 04:13:22,840 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:13:22,850 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2020-10-26 04:13:22,851 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:13:22,852 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [1*ULTIMATE.start_main_~x~0 >= 0] [2020-10-26 04:13:22,886 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-10-26 04:13:22,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:13:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:13:22,935 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-26 04:13:22,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:13:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:13:22,949 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 04:13:22,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:13:22,951 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 04:13:22,968 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-10-26 04:13:22,970 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 2 states. [2020-10-26 04:13:23,078 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 2 states. Result 20 states and 23 transitions. Complement of second has 5 states. [2020-10-26 04:13:23,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:13:23,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-26 04:13:23,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-10-26 04:13:23,085 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 2 letters. Loop has 1 letters. [2020-10-26 04:13:23,087 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:13:23,088 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 3 letters. Loop has 1 letters. [2020-10-26 04:13:23,088 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:13:23,088 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 2 letters. Loop has 2 letters. [2020-10-26 04:13:23,088 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:13:23,089 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2020-10-26 04:13:23,095 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:13:23,099 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 0 states and 0 transitions. [2020-10-26 04:13:23,100 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 04:13:23,100 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 04:13:23,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 04:13:23,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:13:23,102 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:13:23,102 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:13:23,102 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:13:23,102 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 04:13:23,102 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-26 04:13:23,103 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:13:23,103 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-26 04:13:23,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 04:13:23 BoogieIcfgContainer [2020-10-26 04:13:23,110 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 04:13:23,111 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:13:23,111 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:13:23,111 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:13:23,112 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:13:20" (3/4) ... [2020-10-26 04:13:23,116 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 04:13:23,116 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:13:23,120 INFO L168 Benchmark]: Toolchain (without parser) took 2869.58 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.4 MB in the beginning and 40.5 MB in the end (delta: -13.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:13:23,122 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 41.9 MB. Free memory was 21.6 MB in the beginning and 21.6 MB in the end (delta: 40.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:13:23,125 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.33 ms. Allocated memory is still 50.3 MB. Free memory was 26.8 MB in the beginning and 29.9 MB in the end (delta: -3.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-10-26 04:13:23,127 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.39 ms. Allocated memory is still 50.3 MB. Free memory was 29.9 MB in the beginning and 28.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:13:23,130 INFO L168 Benchmark]: Boogie Preprocessor took 21.62 ms. Allocated memory is still 50.3 MB. Free memory was 28.7 MB in the beginning and 27.9 MB in the end (delta: 860.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:13:23,133 INFO L168 Benchmark]: RCFGBuilder took 278.67 ms. Allocated memory is still 50.3 MB. Free memory was 27.7 MB in the beginning and 33.7 MB in the end (delta: -6.0 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2020-10-26 04:13:23,135 INFO L168 Benchmark]: BuchiAutomizer took 2203.30 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 33.6 MB in the beginning and 40.9 MB in the end (delta: -7.3 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2020-10-26 04:13:23,136 INFO L168 Benchmark]: Witness Printer took 5.89 ms. Allocated memory is still 60.8 MB. Free memory was 40.9 MB in the beginning and 40.5 MB in the end (delta: 372.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:13:23,150 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 41.9 MB. Free memory was 21.6 MB in the beginning and 21.6 MB in the end (delta: 40.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 302.33 ms. Allocated memory is still 50.3 MB. Free memory was 26.8 MB in the beginning and 29.9 MB in the end (delta: -3.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.39 ms. Allocated memory is still 50.3 MB. Free memory was 29.9 MB in the beginning and 28.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.62 ms. Allocated memory is still 50.3 MB. Free memory was 28.7 MB in the beginning and 27.9 MB in the end (delta: 860.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 278.67 ms. Allocated memory is still 50.3 MB. Free memory was 27.7 MB in the beginning and 33.7 MB in the end (delta: -6.0 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2203.30 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 33.6 MB in the beginning and 40.9 MB in the end (delta: -7.3 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Witness Printer took 5.89 ms. Allocated memory is still 60.8 MB. Free memory was 40.9 MB in the beginning and 40.5 MB in the end (delta: 372.0 kB). There was no memory consumed. 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 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 9 SDtfs, 9 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax203 hnf100 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq181 hnf95 smp100 dnf156 smp100 tf102 neg94 sie116 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 126ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 1 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...