./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/seq-mthreaded/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d6e41f069ed9e124a2d3b850ca097968a5b5c65 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 20:13:56,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 20:13:56,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 20:13:56,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 20:13:56,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 20:13:56,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 20:13:56,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 20:13:56,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 20:13:56,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 20:13:56,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 20:13:56,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 20:13:56,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 20:13:56,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 20:13:56,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 20:13:56,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 20:13:56,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 20:13:56,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 20:13:56,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 20:13:56,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 20:13:56,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 20:13:56,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 20:13:56,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 20:13:56,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 20:13:56,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 20:13:56,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 20:13:56,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 20:13:56,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 20:13:56,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 20:13:56,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 20:13:56,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 20:13:56,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 20:13:56,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 20:13:56,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 20:13:56,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 20:13:56,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 20:13:56,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 20:13:56,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 20:13:56,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 20:13:56,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 20:13:56,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 20:13:56,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 20:13:56,406 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-19 20:13:56,454 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 20:13:56,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 20:13:56,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 20:13:56,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 20:13:56,457 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 20:13:56,457 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 20:13:56,458 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 20:13:56,458 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 20:13:56,458 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 20:13:56,458 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 20:13:56,459 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 20:13:56,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 20:13:56,460 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 20:13:56,461 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 20:13:56,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 20:13:56,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 20:13:56,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 20:13:56,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 20:13:56,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 20:13:56,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 20:13:56,463 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 20:13:56,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 20:13:56,463 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 20:13:56,463 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 20:13:56,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 20:13:56,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 20:13:56,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 20:13:56,465 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 20:13:56,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 20:13:56,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 20:13:56,465 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 20:13:56,466 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 20:13:56,467 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 20:13:56,468 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d6e41f069ed9e124a2d3b850ca097968a5b5c65 [2020-10-19 20:13:56,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 20:13:56,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 20:13:56,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 20:13:56,801 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 20:13:56,802 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 20:13:56,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c [2020-10-19 20:13:56,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5d2c45e7/10ccdd29b5844f468620b404f64e15cb/FLAG931d98b71 [2020-10-19 20:13:57,344 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 20:13:57,345 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c [2020-10-19 20:13:57,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5d2c45e7/10ccdd29b5844f468620b404f64e15cb/FLAG931d98b71 [2020-10-19 20:13:57,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5d2c45e7/10ccdd29b5844f468620b404f64e15cb [2020-10-19 20:13:57,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 20:13:57,706 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 20:13:57,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 20:13:57,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 20:13:57,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 20:13:57,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 08:13:57" (1/1) ... [2020-10-19 20:13:57,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34ac5d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:13:57, skipping insertion in model container [2020-10-19 20:13:57,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 08:13:57" (1/1) ... [2020-10-19 20:13:57,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 20:13:57,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 20:13:58,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 20:13:58,334 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 20:13:58,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 20:13:58,461 INFO L208 MainTranslator]: Completed translation [2020-10-19 20:13:58,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:13:58 WrapperNode [2020-10-19 20:13:58,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 20:13:58,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 20:13:58,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 20:13:58,464 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 20:13:58,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:13:58" (1/1) ... [2020-10-19 20:13:58,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:13:58" (1/1) ... [2020-10-19 20:13:58,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 20:13:58,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 20:13:58,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 20:13:58,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 20:13:58,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:13:58" (1/1) ... [2020-10-19 20:13:58,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:13:58" (1/1) ... [2020-10-19 20:13:58,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:13:58" (1/1) ... [2020-10-19 20:13:58,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:13:58" (1/1) ... [2020-10-19 20:13:58,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:13:58" (1/1) ... [2020-10-19 20:13:58,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:13:58" (1/1) ... [2020-10-19 20:13:58,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:13:58" (1/1) ... [2020-10-19 20:13:58,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 20:13:58,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 20:13:58,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 20:13:58,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 20:13:58,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:13:58" (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 [2020-10-19 20:13:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 20:13:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 20:13:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 20:13:58,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 20:13:59,369 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 20:13:59,370 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-10-19 20:13:59,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 08:13:59 BoogieIcfgContainer [2020-10-19 20:13:59,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 20:13:59,373 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 20:13:59,373 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 20:13:59,377 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 20:13:59,378 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 20:13:59,378 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 08:13:57" (1/3) ... [2020-10-19 20:13:59,380 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@438f4ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 08:13:59, skipping insertion in model container [2020-10-19 20:13:59,380 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 20:13:59,380 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:13:58" (2/3) ... [2020-10-19 20:13:59,381 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@438f4ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 08:13:59, skipping insertion in model container [2020-10-19 20:13:59,381 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 20:13:59,381 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 08:13:59" (3/3) ... [2020-10-19 20:13:59,383 INFO L373 chiAutomizerObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.BOUNDED-6.pals.c [2020-10-19 20:13:59,431 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 20:13:59,432 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 20:13:59,432 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 20:13:59,432 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 20:13:59,433 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 20:13:59,433 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 20:13:59,433 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 20:13:59,433 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 20:13:59,453 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 131 states. [2020-10-19 20:13:59,487 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 70 [2020-10-19 20:13:59,488 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:13:59,488 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:13:59,498 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:13:59,499 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:13:59,499 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 20:13:59,499 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 131 states. [2020-10-19 20:13:59,506 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 70 [2020-10-19 20:13:59,507 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:13:59,507 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:13:59,509 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:13:59,509 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:13:59,519 INFO L794 eck$LassoCheckResult]: Stem: 98#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(39);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~p12~0 := 0;~p12_old~0 := 0;~p12_new~0 := 0;~ep12~0 := 0;~p13~0 := 0;~p13_old~0 := 0;~p13_new~0 := 0;~ep13~0 := 0;~p21~0 := 0;~p21_old~0 := 0;~p21_new~0 := 0;~ep21~0 := 0;~p23~0 := 0;~p23_old~0 := 0;~p23_new~0 := 0;~ep23~0 := 0;~p31~0 := 0;~p31_old~0 := 0;~p31_new~0 := 0;~ep31~0 := 0;~p32~0 := 0;~p32_old~0 := 0;~p32_new~0 := 0;~ep32~0 := 0;~id1~0 := 0;~r1~0 := 0;~st1~0 := 0;~nl1~0 := 0;~m1~0 := 0;~max1~0 := 0;~mode1~0 := 0;~id2~0 := 0;~r2~0 := 0;~st2~0 := 0;~nl2~0 := 0;~m2~0 := 0;~max2~0 := 0;~mode2~0 := 0;~id3~0 := 0;~r3~0 := 0;~st3~0 := 0;~nl3~0 := 0;~m3~0 := 0;~max3~0 := 0;~mode3~0 := 0;~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[0 := #funAddr~node1.base], ~nodes~0.offset[0 := #funAddr~node1.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[1 := #funAddr~node2.base], ~nodes~0.offset[1 := #funAddr~node2.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[2 := #funAddr~node3.base], ~nodes~0.offset[2 := #funAddr~node3.offset]; 9#L-1true havoc main_#res;havoc main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~nondet29, main_#t~nondet30, main_#t~nondet31, main_#t~nondet32, main_#t~nondet33, main_#t~nondet34, main_#t~nondet35, main_#t~nondet36, main_#t~nondet37, main_#t~nondet38, main_#t~nondet39, main_#t~ret40, main_#t~ret41, main_#t~post42, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~ep12~0 := main_#t~nondet13;havoc main_#t~nondet13;~ep13~0 := main_#t~nondet14;havoc main_#t~nondet14;~ep21~0 := main_#t~nondet15;havoc main_#t~nondet15;~ep23~0 := main_#t~nondet16;havoc main_#t~nondet16;~ep31~0 := main_#t~nondet17;havoc main_#t~nondet17;~ep32~0 := main_#t~nondet18;havoc main_#t~nondet18;~id1~0 := main_#t~nondet19;havoc main_#t~nondet19;~r1~0 := main_#t~nondet20;havoc main_#t~nondet20;~st1~0 := main_#t~nondet21;havoc main_#t~nondet21;~nl1~0 := main_#t~nondet22;havoc main_#t~nondet22;~m1~0 := main_#t~nondet23;havoc main_#t~nondet23;~max1~0 := main_#t~nondet24;havoc main_#t~nondet24;~mode1~0 := main_#t~nondet25;havoc main_#t~nondet25;~id2~0 := main_#t~nondet26;havoc main_#t~nondet26;~r2~0 := main_#t~nondet27;havoc main_#t~nondet27;~st2~0 := main_#t~nondet28;havoc main_#t~nondet28;~nl2~0 := main_#t~nondet29;havoc main_#t~nondet29;~m2~0 := main_#t~nondet30;havoc main_#t~nondet30;~max2~0 := main_#t~nondet31;havoc main_#t~nondet31;~mode2~0 := main_#t~nondet32;havoc main_#t~nondet32;~id3~0 := main_#t~nondet33;havoc main_#t~nondet33;~r3~0 := main_#t~nondet34;havoc main_#t~nondet34;~st3~0 := main_#t~nondet35;havoc main_#t~nondet35;~nl3~0 := main_#t~nondet36;havoc main_#t~nondet36;~m3~0 := main_#t~nondet37;havoc main_#t~nondet37;~max3~0 := main_#t~nondet38;havoc main_#t~nondet38;~mode3~0 := main_#t~nondet39;havoc main_#t~nondet39;havoc init_#res;havoc init_~r121~0, init_~r131~0, init_~r211~0, init_~r231~0, init_~r311~0, init_~r321~0, init_~r122~0, init_~tmp~0, init_~r132~0, init_~tmp___0~0, init_~r212~0, init_~tmp___1~0, init_~r232~0, init_~tmp___2~0, init_~r312~0, init_~tmp___3~0, init_~r322~0, init_~tmp___4~0, init_~tmp___5~0;havoc init_~r121~0;havoc init_~r131~0;havoc init_~r211~0;havoc init_~r231~0;havoc init_~r311~0;havoc init_~r321~0;havoc init_~r122~0;havoc init_~tmp~0;havoc init_~r132~0;havoc init_~tmp___0~0;havoc init_~r212~0;havoc init_~tmp___1~0;havoc init_~r232~0;havoc init_~tmp___2~0;havoc init_~r312~0;havoc init_~tmp___3~0;havoc init_~r322~0;havoc init_~tmp___4~0;havoc init_~tmp___5~0;init_~r121~0 := ~ep12~0;init_~r131~0 := ~ep13~0;init_~r211~0 := ~ep21~0;init_~r231~0 := ~ep23~0;init_~r311~0 := ~ep31~0;init_~r321~0 := ~ep32~0; 43#L276true assume 0 != init_~r121~0 % 256;init_~tmp~0 := 1; 49#L279-1true init_~r122~0 := (if 0 == init_~tmp~0 then 0 else 1); 99#L289true assume 0 != init_~r131~0 % 256;init_~tmp___0~0 := 1; 85#L292-1true init_~r132~0 := (if 0 == init_~tmp___0~0 then 0 else 1); 132#L302true assume 0 != init_~r211~0 % 256;init_~tmp___1~0 := 1; 115#L305-1true init_~r212~0 := (if 0 == init_~tmp___1~0 then 0 else 1); 32#L315true assume 0 != init_~r231~0 % 256;init_~tmp___2~0 := 1; 12#L318-1true init_~r232~0 := (if 0 == init_~tmp___2~0 then 0 else 1); 61#L328true assume 0 != init_~r311~0 % 256;init_~tmp___3~0 := 1; 58#L331-1true init_~r312~0 := (if 0 == init_~tmp___3~0 then 0 else 1); 106#L341true assume 0 != init_~r321~0 % 256;init_~tmp___4~0 := 1; 94#L344-1true init_~r322~0 := (if 0 == init_~tmp___4~0 then 0 else 1); 6#L354true assume !(~id1~0 != ~id2~0);init_~tmp___5~0 := 0; 8#L354-1true init_#res := init_~tmp___5~0; 67#L463true main_#t~ret40 := init_#res;main_~i2~0 := main_#t~ret40;havoc main_#t~ret40; 38#L557true assume !(0 == main_~i2~0); 42#L557-2true ~p12_old~0 := ~nomsg~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~nomsg~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~nomsg~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~nomsg~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~nomsg~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~nomsg~0;~p32_new~0 := ~nomsg~0;main_~i2~0 := 0; 17#L571-2true [2020-10-19 20:13:59,520 INFO L796 eck$LassoCheckResult]: Loop: 17#L571-2true assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_#t~ite8; 36#L122true assume !(0 != ~mode1~0 % 256); 24#L147true assume !(~r1~0 < 1); 22#L147-1true ~mode1~0 := 1; 51#L122-2true havoc node2_#t~ite9, node2_#t~ite10; 90#L165true assume !(0 != ~mode2~0 % 256); 75#L190true assume !(~r2~0 < 2); 72#L190-1true ~mode2~0 := 1; 100#L165-2true havoc node3_#t~ite11, node3_#t~ite12; 3#L208true assume !(0 != ~mode3~0 % 256); 122#L233true assume !(~r3~0 < 2); 121#L233-1true ~mode3~0 := 1; 16#L208-2true ~p12_old~0 := ~p12_new~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~p13_new~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~p21_new~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~p23_new~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~p31_new~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~p32_new~0;~p32_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 71#L471true assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1 := 0; 73#L471-1true check_#res := check_~tmp~1; 13#L519true main_#t~ret41 := check_#res;main_~c1~0 := main_#t~ret41;havoc main_#t~ret41;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 37#L601true assume !(0 == assert_~arg % 256); 10#L596true main_#t~post42 := main_~i2~0;main_~i2~0 := 1 + main_#t~post42;havoc main_#t~post42; 17#L571-2true [2020-10-19 20:13:59,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:13:59,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1727567734, now seen corresponding path program 1 times [2020-10-19 20:13:59,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:13:59,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316219462] [2020-10-19 20:13:59,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:13:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:13:59,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:13:59,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316219462] [2020-10-19 20:13:59,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 20:13:59,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 20:13:59,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793402074] [2020-10-19 20:13:59,814 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 20:13:59,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:13:59,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1518597393, now seen corresponding path program 1 times [2020-10-19 20:13:59,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:13:59,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694000636] [2020-10-19 20:13:59,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:13:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:13:59,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:13:59,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694000636] [2020-10-19 20:13:59,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 20:13:59,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 20:13:59,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273496943] [2020-10-19 20:13:59,928 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 20:13:59,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 20:13:59,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 20:13:59,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 20:13:59,947 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 5 states. [2020-10-19 20:14:00,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 20:14:00,056 INFO L93 Difference]: Finished difference Result 134 states and 226 transitions. [2020-10-19 20:14:00,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 20:14:00,059 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 134 states and 226 transitions. [2020-10-19 20:14:00,064 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 68 [2020-10-19 20:14:00,070 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 134 states to 125 states and 210 transitions. [2020-10-19 20:14:00,071 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 125 [2020-10-19 20:14:00,072 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 125 [2020-10-19 20:14:00,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 125 states and 210 transitions. [2020-10-19 20:14:00,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 20:14:00,075 INFO L691 BuchiCegarLoop]: Abstraction has 125 states and 210 transitions. [2020-10-19 20:14:00,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states and 210 transitions. [2020-10-19 20:14:00,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-10-19 20:14:00,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-19 20:14:00,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 210 transitions. [2020-10-19 20:14:00,122 INFO L714 BuchiCegarLoop]: Abstraction has 125 states and 210 transitions. [2020-10-19 20:14:00,123 INFO L594 BuchiCegarLoop]: Abstraction has 125 states and 210 transitions. [2020-10-19 20:14:00,123 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 20:14:00,123 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 125 states and 210 transitions. [2020-10-19 20:14:00,126 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 68 [2020-10-19 20:14:00,126 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:14:00,126 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:14:00,128 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:14:00,128 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:14:00,128 INFO L794 eck$LassoCheckResult]: Stem: 401#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(39);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~p12~0 := 0;~p12_old~0 := 0;~p12_new~0 := 0;~ep12~0 := 0;~p13~0 := 0;~p13_old~0 := 0;~p13_new~0 := 0;~ep13~0 := 0;~p21~0 := 0;~p21_old~0 := 0;~p21_new~0 := 0;~ep21~0 := 0;~p23~0 := 0;~p23_old~0 := 0;~p23_new~0 := 0;~ep23~0 := 0;~p31~0 := 0;~p31_old~0 := 0;~p31_new~0 := 0;~ep31~0 := 0;~p32~0 := 0;~p32_old~0 := 0;~p32_new~0 := 0;~ep32~0 := 0;~id1~0 := 0;~r1~0 := 0;~st1~0 := 0;~nl1~0 := 0;~m1~0 := 0;~max1~0 := 0;~mode1~0 := 0;~id2~0 := 0;~r2~0 := 0;~st2~0 := 0;~nl2~0 := 0;~m2~0 := 0;~max2~0 := 0;~mode2~0 := 0;~id3~0 := 0;~r3~0 := 0;~st3~0 := 0;~nl3~0 := 0;~m3~0 := 0;~max3~0 := 0;~mode3~0 := 0;~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[0 := #funAddr~node1.base], ~nodes~0.offset[0 := #funAddr~node1.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[1 := #funAddr~node2.base], ~nodes~0.offset[1 := #funAddr~node2.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[2 := #funAddr~node3.base], ~nodes~0.offset[2 := #funAddr~node3.offset]; 298#L-1 havoc main_#res;havoc main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~nondet29, main_#t~nondet30, main_#t~nondet31, main_#t~nondet32, main_#t~nondet33, main_#t~nondet34, main_#t~nondet35, main_#t~nondet36, main_#t~nondet37, main_#t~nondet38, main_#t~nondet39, main_#t~ret40, main_#t~ret41, main_#t~post42, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~ep12~0 := main_#t~nondet13;havoc main_#t~nondet13;~ep13~0 := main_#t~nondet14;havoc main_#t~nondet14;~ep21~0 := main_#t~nondet15;havoc main_#t~nondet15;~ep23~0 := main_#t~nondet16;havoc main_#t~nondet16;~ep31~0 := main_#t~nondet17;havoc main_#t~nondet17;~ep32~0 := main_#t~nondet18;havoc main_#t~nondet18;~id1~0 := main_#t~nondet19;havoc main_#t~nondet19;~r1~0 := main_#t~nondet20;havoc main_#t~nondet20;~st1~0 := main_#t~nondet21;havoc main_#t~nondet21;~nl1~0 := main_#t~nondet22;havoc main_#t~nondet22;~m1~0 := main_#t~nondet23;havoc main_#t~nondet23;~max1~0 := main_#t~nondet24;havoc main_#t~nondet24;~mode1~0 := main_#t~nondet25;havoc main_#t~nondet25;~id2~0 := main_#t~nondet26;havoc main_#t~nondet26;~r2~0 := main_#t~nondet27;havoc main_#t~nondet27;~st2~0 := main_#t~nondet28;havoc main_#t~nondet28;~nl2~0 := main_#t~nondet29;havoc main_#t~nondet29;~m2~0 := main_#t~nondet30;havoc main_#t~nondet30;~max2~0 := main_#t~nondet31;havoc main_#t~nondet31;~mode2~0 := main_#t~nondet32;havoc main_#t~nondet32;~id3~0 := main_#t~nondet33;havoc main_#t~nondet33;~r3~0 := main_#t~nondet34;havoc main_#t~nondet34;~st3~0 := main_#t~nondet35;havoc main_#t~nondet35;~nl3~0 := main_#t~nondet36;havoc main_#t~nondet36;~m3~0 := main_#t~nondet37;havoc main_#t~nondet37;~max3~0 := main_#t~nondet38;havoc main_#t~nondet38;~mode3~0 := main_#t~nondet39;havoc main_#t~nondet39;havoc init_#res;havoc init_~r121~0, init_~r131~0, init_~r211~0, init_~r231~0, init_~r311~0, init_~r321~0, init_~r122~0, init_~tmp~0, init_~r132~0, init_~tmp___0~0, init_~r212~0, init_~tmp___1~0, init_~r232~0, init_~tmp___2~0, init_~r312~0, init_~tmp___3~0, init_~r322~0, init_~tmp___4~0, init_~tmp___5~0;havoc init_~r121~0;havoc init_~r131~0;havoc init_~r211~0;havoc init_~r231~0;havoc init_~r311~0;havoc init_~r321~0;havoc init_~r122~0;havoc init_~tmp~0;havoc init_~r132~0;havoc init_~tmp___0~0;havoc init_~r212~0;havoc init_~tmp___1~0;havoc init_~r232~0;havoc init_~tmp___2~0;havoc init_~r312~0;havoc init_~tmp___3~0;havoc init_~r322~0;havoc init_~tmp___4~0;havoc init_~tmp___5~0;init_~r121~0 := ~ep12~0;init_~r131~0 := ~ep13~0;init_~r211~0 := ~ep21~0;init_~r231~0 := ~ep23~0;init_~r311~0 := ~ep31~0;init_~r321~0 := ~ep32~0; 299#L276 assume 0 != init_~r121~0 % 256;init_~tmp~0 := 1; 355#L279-1 init_~r122~0 := (if 0 == init_~tmp~0 then 0 else 1); 363#L289 assume 0 != init_~r131~0 % 256;init_~tmp___0~0 := 1; 316#L292-1 init_~r132~0 := (if 0 == init_~tmp___0~0 then 0 else 1); 396#L302 assume 0 != init_~r211~0 % 256;init_~tmp___1~0 := 1; 380#L305-1 init_~r212~0 := (if 0 == init_~tmp___1~0 then 0 else 1); 340#L315 assume 0 != init_~r231~0 % 256;init_~tmp___2~0 := 1; 302#L318-1 init_~r232~0 := (if 0 == init_~tmp___2~0 then 0 else 1); 303#L328 assume 0 != init_~r311~0 % 256;init_~tmp___3~0 := 1; 294#L331-1 init_~r312~0 := (if 0 == init_~tmp___3~0 then 0 else 1); 375#L341 assume 0 != init_~r321~0 % 256;init_~tmp___4~0 := 1; 345#L344-1 init_~r322~0 := (if 0 == init_~tmp___4~0 then 0 else 1); 291#L354 assume !(~id1~0 != ~id2~0);init_~tmp___5~0 := 0; 288#L354-1 init_#res := init_~tmp___5~0; 295#L463 main_#t~ret40 := init_#res;main_~i2~0 := main_#t~ret40;havoc main_#t~ret40; 347#L557 assume !(0 == main_~i2~0); 348#L557-2 ~p12_old~0 := ~nomsg~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~nomsg~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~nomsg~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~nomsg~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~nomsg~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~nomsg~0;~p32_new~0 := ~nomsg~0;main_~i2~0 := 0; 297#L571-2 [2020-10-19 20:14:00,133 INFO L796 eck$LassoCheckResult]: Loop: 297#L571-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_#t~ite8; 314#L122 assume !(0 != ~mode1~0 % 256); 326#L147 assume !(~r1~0 < 1); 321#L147-1 ~mode1~0 := 1; 322#L122-2 havoc node2_#t~ite9, node2_#t~ite10; 365#L165 assume !(0 != ~mode2~0 % 256); 391#L190 assume !(~r2~0 < 2); 324#L190-1 ~mode2~0 := 1; 390#L165-2 havoc node3_#t~ite11, node3_#t~ite12; 283#L208 assume !(0 != ~mode3~0 % 256); 285#L233 assume !(~r3~0 < 2); 339#L233-1 ~mode3~0 := 1; 312#L208-2 ~p12_old~0 := ~p12_new~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~p13_new~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~p21_new~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~p23_new~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~p31_new~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~p32_new~0;~p32_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 313#L471 assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; 319#L472 assume ~st1~0 + ~nl1~0 <= 1; 320#L473 assume ~st2~0 + ~nl2~0 <= 1; 384#L474 assume ~st3~0 + ~nl3~0 <= 1; 306#L475 assume ~r1~0 >= 2; 307#L479 assume ~r1~0 < 2; 318#L484 assume ~r1~0 >= 2; 361#L489 assume ~r1~0 < 2;check_~tmp~1 := 1; 388#L471-1 check_#res := check_~tmp~1; 304#L519 main_#t~ret41 := check_#res;main_~c1~0 := main_#t~ret41;havoc main_#t~ret41;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 305#L601 assume !(0 == assert_~arg % 256); 296#L596 main_#t~post42 := main_~i2~0;main_~i2~0 := 1 + main_#t~post42;havoc main_#t~post42; 297#L571-2 [2020-10-19 20:14:00,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:14:00,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1727567734, now seen corresponding path program 2 times [2020-10-19 20:14:00,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:14:00,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268241903] [2020-10-19 20:14:00,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:14:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:14:00,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:14:00,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268241903] [2020-10-19 20:14:00,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 20:14:00,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 20:14:00,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068267743] [2020-10-19 20:14:00,271 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 20:14:00,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:14:00,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1802356924, now seen corresponding path program 1 times [2020-10-19 20:14:00,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:14:00,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032588871] [2020-10-19 20:14:00,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:14:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:14:00,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:14:00,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032588871] [2020-10-19 20:14:00,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 20:14:00,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 20:14:00,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675136132] [2020-10-19 20:14:00,309 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 20:14:00,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 20:14:00,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 20:14:00,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 20:14:00,310 INFO L87 Difference]: Start difference. First operand 125 states and 210 transitions. cyclomatic complexity: 86 Second operand 5 states. [2020-10-19 20:14:00,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 20:14:00,444 INFO L93 Difference]: Finished difference Result 196 states and 320 transitions. [2020-10-19 20:14:00,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 20:14:00,446 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 196 states and 320 transitions. [2020-10-19 20:14:00,450 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 68 [2020-10-19 20:14:00,452 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 196 states to 193 states and 291 transitions. [2020-10-19 20:14:00,453 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 193 [2020-10-19 20:14:00,454 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 193 [2020-10-19 20:14:00,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 193 states and 291 transitions. [2020-10-19 20:14:00,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 20:14:00,456 INFO L691 BuchiCegarLoop]: Abstraction has 193 states and 291 transitions. [2020-10-19 20:14:00,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states and 291 transitions. [2020-10-19 20:14:00,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 125. [2020-10-19 20:14:00,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-19 20:14:00,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 183 transitions. [2020-10-19 20:14:00,466 INFO L714 BuchiCegarLoop]: Abstraction has 125 states and 183 transitions. [2020-10-19 20:14:00,466 INFO L594 BuchiCegarLoop]: Abstraction has 125 states and 183 transitions. [2020-10-19 20:14:00,467 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-19 20:14:00,467 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 125 states and 183 transitions. [2020-10-19 20:14:00,469 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 68 [2020-10-19 20:14:00,469 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:14:00,469 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:14:00,471 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:14:00,471 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:14:00,472 INFO L794 eck$LassoCheckResult]: Stem: 735#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(39);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~p12~0 := 0;~p12_old~0 := 0;~p12_new~0 := 0;~ep12~0 := 0;~p13~0 := 0;~p13_old~0 := 0;~p13_new~0 := 0;~ep13~0 := 0;~p21~0 := 0;~p21_old~0 := 0;~p21_new~0 := 0;~ep21~0 := 0;~p23~0 := 0;~p23_old~0 := 0;~p23_new~0 := 0;~ep23~0 := 0;~p31~0 := 0;~p31_old~0 := 0;~p31_new~0 := 0;~ep31~0 := 0;~p32~0 := 0;~p32_old~0 := 0;~p32_new~0 := 0;~ep32~0 := 0;~id1~0 := 0;~r1~0 := 0;~st1~0 := 0;~nl1~0 := 0;~m1~0 := 0;~max1~0 := 0;~mode1~0 := 0;~id2~0 := 0;~r2~0 := 0;~st2~0 := 0;~nl2~0 := 0;~m2~0 := 0;~max2~0 := 0;~mode2~0 := 0;~id3~0 := 0;~r3~0 := 0;~st3~0 := 0;~nl3~0 := 0;~m3~0 := 0;~max3~0 := 0;~mode3~0 := 0;~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[0 := #funAddr~node1.base], ~nodes~0.offset[0 := #funAddr~node1.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[1 := #funAddr~node2.base], ~nodes~0.offset[1 := #funAddr~node2.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[2 := #funAddr~node3.base], ~nodes~0.offset[2 := #funAddr~node3.offset]; 632#L-1 havoc main_#res;havoc main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~nondet29, main_#t~nondet30, main_#t~nondet31, main_#t~nondet32, main_#t~nondet33, main_#t~nondet34, main_#t~nondet35, main_#t~nondet36, main_#t~nondet37, main_#t~nondet38, main_#t~nondet39, main_#t~ret40, main_#t~ret41, main_#t~post42, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~ep12~0 := main_#t~nondet13;havoc main_#t~nondet13;~ep13~0 := main_#t~nondet14;havoc main_#t~nondet14;~ep21~0 := main_#t~nondet15;havoc main_#t~nondet15;~ep23~0 := main_#t~nondet16;havoc main_#t~nondet16;~ep31~0 := main_#t~nondet17;havoc main_#t~nondet17;~ep32~0 := main_#t~nondet18;havoc main_#t~nondet18;~id1~0 := main_#t~nondet19;havoc main_#t~nondet19;~r1~0 := main_#t~nondet20;havoc main_#t~nondet20;~st1~0 := main_#t~nondet21;havoc main_#t~nondet21;~nl1~0 := main_#t~nondet22;havoc main_#t~nondet22;~m1~0 := main_#t~nondet23;havoc main_#t~nondet23;~max1~0 := main_#t~nondet24;havoc main_#t~nondet24;~mode1~0 := main_#t~nondet25;havoc main_#t~nondet25;~id2~0 := main_#t~nondet26;havoc main_#t~nondet26;~r2~0 := main_#t~nondet27;havoc main_#t~nondet27;~st2~0 := main_#t~nondet28;havoc main_#t~nondet28;~nl2~0 := main_#t~nondet29;havoc main_#t~nondet29;~m2~0 := main_#t~nondet30;havoc main_#t~nondet30;~max2~0 := main_#t~nondet31;havoc main_#t~nondet31;~mode2~0 := main_#t~nondet32;havoc main_#t~nondet32;~id3~0 := main_#t~nondet33;havoc main_#t~nondet33;~r3~0 := main_#t~nondet34;havoc main_#t~nondet34;~st3~0 := main_#t~nondet35;havoc main_#t~nondet35;~nl3~0 := main_#t~nondet36;havoc main_#t~nondet36;~m3~0 := main_#t~nondet37;havoc main_#t~nondet37;~max3~0 := main_#t~nondet38;havoc main_#t~nondet38;~mode3~0 := main_#t~nondet39;havoc main_#t~nondet39;havoc init_#res;havoc init_~r121~0, init_~r131~0, init_~r211~0, init_~r231~0, init_~r311~0, init_~r321~0, init_~r122~0, init_~tmp~0, init_~r132~0, init_~tmp___0~0, init_~r212~0, init_~tmp___1~0, init_~r232~0, init_~tmp___2~0, init_~r312~0, init_~tmp___3~0, init_~r322~0, init_~tmp___4~0, init_~tmp___5~0;havoc init_~r121~0;havoc init_~r131~0;havoc init_~r211~0;havoc init_~r231~0;havoc init_~r311~0;havoc init_~r321~0;havoc init_~r122~0;havoc init_~tmp~0;havoc init_~r132~0;havoc init_~tmp___0~0;havoc init_~r212~0;havoc init_~tmp___1~0;havoc init_~r232~0;havoc init_~tmp___2~0;havoc init_~r312~0;havoc init_~tmp___3~0;havoc init_~r322~0;havoc init_~tmp___4~0;havoc init_~tmp___5~0;init_~r121~0 := ~ep12~0;init_~r131~0 := ~ep13~0;init_~r211~0 := ~ep21~0;init_~r231~0 := ~ep23~0;init_~r311~0 := ~ep31~0;init_~r321~0 := ~ep32~0; 633#L276 assume 0 != init_~r121~0 % 256;init_~tmp~0 := 1; 689#L279-1 init_~r122~0 := (if 0 == init_~tmp~0 then 0 else 1); 697#L289 assume 0 != init_~r131~0 % 256;init_~tmp___0~0 := 1; 650#L292-1 init_~r132~0 := (if 0 == init_~tmp___0~0 then 0 else 1); 730#L302 assume 0 != init_~r211~0 % 256;init_~tmp___1~0 := 1; 714#L305-1 init_~r212~0 := (if 0 == init_~tmp___1~0 then 0 else 1); 674#L315 assume 0 != init_~r231~0 % 256;init_~tmp___2~0 := 1; 636#L318-1 init_~r232~0 := (if 0 == init_~tmp___2~0 then 0 else 1); 637#L328 assume 0 != init_~r311~0 % 256;init_~tmp___3~0 := 1; 627#L331-1 init_~r312~0 := (if 0 == init_~tmp___3~0 then 0 else 1); 709#L341 assume 0 != init_~r321~0 % 256;init_~tmp___4~0 := 1; 680#L344-1 init_~r322~0 := (if 0 == init_~tmp___4~0 then 0 else 1); 624#L354 assume ~id1~0 != ~id2~0; 625#L355 assume ~id1~0 != ~id3~0; 676#L356 assume ~id2~0 != ~id3~0; 677#L357 assume ~id1~0 >= 0; 729#L358 assume ~id2~0 >= 0; 672#L359 assume ~id3~0 >= 0; 673#L360 assume 0 == ~r1~0; 711#L361 assume 0 == ~r2~0; 666#L362 assume 0 == ~r3~0; 667#L363 assume 0 != init_~r122~0 % 256; 705#L364 assume 0 != init_~r132~0 % 256; 622#L365 assume 0 != init_~r212~0 % 256; 623#L366 assume 0 != init_~r232~0 % 256; 702#L367 assume 0 != init_~r312~0 % 256; 703#L368 assume 0 != init_~r322~0 % 256; 728#L369 assume ~max1~0 == ~id1~0; 668#L370 assume ~max2~0 == ~id2~0; 669#L371 assume ~max3~0 == ~id3~0; 710#L372 assume 0 == ~st1~0; 662#L373 assume 0 == ~st2~0; 663#L374 assume 0 == ~st3~0; 704#L375 assume 0 == ~nl1~0; 620#L376 assume 0 == ~nl2~0; 621#L377 assume 0 == ~nl3~0; 700#L378 assume 0 == ~mode1~0 % 256; 701#L379 assume 0 == ~mode2~0 % 256; 727#L380 assume 0 == ~mode3~0 % 256;init_~tmp___5~0 := 1; 628#L354-1 init_#res := init_~tmp___5~0; 629#L463 main_#t~ret40 := init_#res;main_~i2~0 := main_#t~ret40;havoc main_#t~ret40; 681#L557 assume !(0 == main_~i2~0); 682#L557-2 ~p12_old~0 := ~nomsg~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~nomsg~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~nomsg~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~nomsg~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~nomsg~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~nomsg~0;~p32_new~0 := ~nomsg~0;main_~i2~0 := 0; 631#L571-2 [2020-10-19 20:14:00,472 INFO L796 eck$LassoCheckResult]: Loop: 631#L571-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_#t~ite8; 648#L122 assume !(0 != ~mode1~0 % 256); 660#L147 assume !(~r1~0 < 1); 655#L147-1 ~mode1~0 := 1; 656#L122-2 havoc node2_#t~ite9, node2_#t~ite10; 699#L165 assume !(0 != ~mode2~0 % 256); 725#L190 assume !(~r2~0 < 2); 658#L190-1 ~mode2~0 := 1; 724#L165-2 havoc node3_#t~ite11, node3_#t~ite12; 617#L208 assume !(0 != ~mode3~0 % 256); 619#L233 assume !(~r3~0 < 2); 671#L233-1 ~mode3~0 := 1; 646#L208-2 ~p12_old~0 := ~p12_new~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~p13_new~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~p21_new~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~p23_new~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~p31_new~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~p32_new~0;~p32_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 647#L471 assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; 653#L472 assume ~st1~0 + ~nl1~0 <= 1; 654#L473 assume ~st2~0 + ~nl2~0 <= 1; 718#L474 assume ~st3~0 + ~nl3~0 <= 1; 640#L475 assume ~r1~0 >= 2; 641#L479 assume ~r1~0 < 2; 652#L484 assume ~r1~0 >= 2; 696#L489 assume ~r1~0 < 2;check_~tmp~1 := 1; 722#L471-1 check_#res := check_~tmp~1; 638#L519 main_#t~ret41 := check_#res;main_~c1~0 := main_#t~ret41;havoc main_#t~ret41;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 639#L601 assume !(0 == assert_~arg % 256); 630#L596 main_#t~post42 := main_~i2~0;main_~i2~0 := 1 + main_#t~post42;havoc main_#t~post42; 631#L571-2 [2020-10-19 20:14:00,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:14:00,473 INFO L82 PathProgramCache]: Analyzing trace with hash -97176065, now seen corresponding path program 1 times [2020-10-19 20:14:00,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:14:00,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673281948] [2020-10-19 20:14:00,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:14:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:14:00,527 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:14:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:14:00,579 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:14:00,627 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:14:00,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:14:00,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1802356924, now seen corresponding path program 2 times [2020-10-19 20:14:00,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:14:00,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255907936] [2020-10-19 20:14:00,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:14:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:14:00,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:14:00,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255907936] [2020-10-19 20:14:00,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 20:14:00,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 20:14:00,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899008371] [2020-10-19 20:14:00,653 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 20:14:00,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 20:14:00,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 20:14:00,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 20:14:00,654 INFO L87 Difference]: Start difference. First operand 125 states and 183 transitions. cyclomatic complexity: 59 Second operand 3 states. [2020-10-19 20:14:00,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 20:14:00,734 INFO L93 Difference]: Finished difference Result 177 states and 260 transitions. [2020-10-19 20:14:00,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 20:14:00,735 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 177 states and 260 transitions. [2020-10-19 20:14:00,739 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 120 [2020-10-19 20:14:00,742 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 177 states to 177 states and 260 transitions. [2020-10-19 20:14:00,742 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 177 [2020-10-19 20:14:00,744 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 177 [2020-10-19 20:14:00,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 177 states and 260 transitions. [2020-10-19 20:14:00,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 20:14:00,748 INFO L691 BuchiCegarLoop]: Abstraction has 177 states and 260 transitions. [2020-10-19 20:14:00,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states and 260 transitions. [2020-10-19 20:14:00,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2020-10-19 20:14:00,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-19 20:14:00,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 260 transitions. [2020-10-19 20:14:00,769 INFO L714 BuchiCegarLoop]: Abstraction has 177 states and 260 transitions. [2020-10-19 20:14:00,770 INFO L594 BuchiCegarLoop]: Abstraction has 177 states and 260 transitions. [2020-10-19 20:14:00,770 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-19 20:14:00,770 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 177 states and 260 transitions. [2020-10-19 20:14:00,773 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 120 [2020-10-19 20:14:00,775 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:14:00,775 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:14:00,778 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:14:00,779 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:14:00,779 INFO L794 eck$LassoCheckResult]: Stem: 1045#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(39);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~p12~0 := 0;~p12_old~0 := 0;~p12_new~0 := 0;~ep12~0 := 0;~p13~0 := 0;~p13_old~0 := 0;~p13_new~0 := 0;~ep13~0 := 0;~p21~0 := 0;~p21_old~0 := 0;~p21_new~0 := 0;~ep21~0 := 0;~p23~0 := 0;~p23_old~0 := 0;~p23_new~0 := 0;~ep23~0 := 0;~p31~0 := 0;~p31_old~0 := 0;~p31_new~0 := 0;~ep31~0 := 0;~p32~0 := 0;~p32_old~0 := 0;~p32_new~0 := 0;~ep32~0 := 0;~id1~0 := 0;~r1~0 := 0;~st1~0 := 0;~nl1~0 := 0;~m1~0 := 0;~max1~0 := 0;~mode1~0 := 0;~id2~0 := 0;~r2~0 := 0;~st2~0 := 0;~nl2~0 := 0;~m2~0 := 0;~max2~0 := 0;~mode2~0 := 0;~id3~0 := 0;~r3~0 := 0;~st3~0 := 0;~nl3~0 := 0;~m3~0 := 0;~max3~0 := 0;~mode3~0 := 0;~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[0 := #funAddr~node1.base], ~nodes~0.offset[0 := #funAddr~node1.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[1 := #funAddr~node2.base], ~nodes~0.offset[1 := #funAddr~node2.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[2 := #funAddr~node3.base], ~nodes~0.offset[2 := #funAddr~node3.offset]; 940#L-1 havoc main_#res;havoc main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~nondet29, main_#t~nondet30, main_#t~nondet31, main_#t~nondet32, main_#t~nondet33, main_#t~nondet34, main_#t~nondet35, main_#t~nondet36, main_#t~nondet37, main_#t~nondet38, main_#t~nondet39, main_#t~ret40, main_#t~ret41, main_#t~post42, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~ep12~0 := main_#t~nondet13;havoc main_#t~nondet13;~ep13~0 := main_#t~nondet14;havoc main_#t~nondet14;~ep21~0 := main_#t~nondet15;havoc main_#t~nondet15;~ep23~0 := main_#t~nondet16;havoc main_#t~nondet16;~ep31~0 := main_#t~nondet17;havoc main_#t~nondet17;~ep32~0 := main_#t~nondet18;havoc main_#t~nondet18;~id1~0 := main_#t~nondet19;havoc main_#t~nondet19;~r1~0 := main_#t~nondet20;havoc main_#t~nondet20;~st1~0 := main_#t~nondet21;havoc main_#t~nondet21;~nl1~0 := main_#t~nondet22;havoc main_#t~nondet22;~m1~0 := main_#t~nondet23;havoc main_#t~nondet23;~max1~0 := main_#t~nondet24;havoc main_#t~nondet24;~mode1~0 := main_#t~nondet25;havoc main_#t~nondet25;~id2~0 := main_#t~nondet26;havoc main_#t~nondet26;~r2~0 := main_#t~nondet27;havoc main_#t~nondet27;~st2~0 := main_#t~nondet28;havoc main_#t~nondet28;~nl2~0 := main_#t~nondet29;havoc main_#t~nondet29;~m2~0 := main_#t~nondet30;havoc main_#t~nondet30;~max2~0 := main_#t~nondet31;havoc main_#t~nondet31;~mode2~0 := main_#t~nondet32;havoc main_#t~nondet32;~id3~0 := main_#t~nondet33;havoc main_#t~nondet33;~r3~0 := main_#t~nondet34;havoc main_#t~nondet34;~st3~0 := main_#t~nondet35;havoc main_#t~nondet35;~nl3~0 := main_#t~nondet36;havoc main_#t~nondet36;~m3~0 := main_#t~nondet37;havoc main_#t~nondet37;~max3~0 := main_#t~nondet38;havoc main_#t~nondet38;~mode3~0 := main_#t~nondet39;havoc main_#t~nondet39;havoc init_#res;havoc init_~r121~0, init_~r131~0, init_~r211~0, init_~r231~0, init_~r311~0, init_~r321~0, init_~r122~0, init_~tmp~0, init_~r132~0, init_~tmp___0~0, init_~r212~0, init_~tmp___1~0, init_~r232~0, init_~tmp___2~0, init_~r312~0, init_~tmp___3~0, init_~r322~0, init_~tmp___4~0, init_~tmp___5~0;havoc init_~r121~0;havoc init_~r131~0;havoc init_~r211~0;havoc init_~r231~0;havoc init_~r311~0;havoc init_~r321~0;havoc init_~r122~0;havoc init_~tmp~0;havoc init_~r132~0;havoc init_~tmp___0~0;havoc init_~r212~0;havoc init_~tmp___1~0;havoc init_~r232~0;havoc init_~tmp___2~0;havoc init_~r312~0;havoc init_~tmp___3~0;havoc init_~r322~0;havoc init_~tmp___4~0;havoc init_~tmp___5~0;init_~r121~0 := ~ep12~0;init_~r131~0 := ~ep13~0;init_~r211~0 := ~ep21~0;init_~r231~0 := ~ep23~0;init_~r311~0 := ~ep31~0;init_~r321~0 := ~ep32~0; 941#L276 assume 0 != init_~r121~0 % 256;init_~tmp~0 := 1; 997#L279-1 init_~r122~0 := (if 0 == init_~tmp~0 then 0 else 1); 1005#L289 assume 0 != init_~r131~0 % 256;init_~tmp___0~0 := 1; 957#L292-1 init_~r132~0 := (if 0 == init_~tmp___0~0 then 0 else 1); 1040#L302 assume 0 != init_~r211~0 % 256;init_~tmp___1~0 := 1; 1022#L305-1 init_~r212~0 := (if 0 == init_~tmp___1~0 then 0 else 1); 982#L315 assume 0 != init_~r231~0 % 256;init_~tmp___2~0 := 1; 944#L318-1 init_~r232~0 := (if 0 == init_~tmp___2~0 then 0 else 1); 945#L328 assume 0 != init_~r311~0 % 256;init_~tmp___3~0 := 1; 935#L331-1 init_~r312~0 := (if 0 == init_~tmp___3~0 then 0 else 1); 1017#L341 assume 0 != init_~r321~0 % 256;init_~tmp___4~0 := 1; 987#L344-1 init_~r322~0 := (if 0 == init_~tmp___4~0 then 0 else 1); 932#L354 assume ~id1~0 != ~id2~0; 933#L355 assume ~id1~0 != ~id3~0; 984#L356 assume ~id2~0 != ~id3~0; 985#L357 assume ~id1~0 >= 0; 1039#L358 assume ~id2~0 >= 0; 978#L359 assume ~id3~0 >= 0; 979#L360 assume 0 == ~r1~0; 1019#L361 assume 0 == ~r2~0; 971#L362 assume 0 == ~r3~0; 972#L363 assume 0 != init_~r122~0 % 256; 1013#L364 assume 0 != init_~r132~0 % 256; 930#L365 assume 0 != init_~r212~0 % 256; 931#L366 assume 0 != init_~r232~0 % 256; 1010#L367 assume 0 != init_~r312~0 % 256; 1011#L368 assume 0 != init_~r322~0 % 256; 1038#L369 assume ~max1~0 == ~id1~0; 976#L370 assume ~max2~0 == ~id2~0; 977#L371 assume ~max3~0 == ~id3~0; 1018#L372 assume 0 == ~st1~0; 969#L373 assume 0 == ~st2~0; 970#L374 assume 0 == ~st3~0; 1012#L375 assume 0 == ~nl1~0; 928#L376 assume 0 == ~nl2~0; 929#L377 assume 0 == ~nl3~0; 1008#L378 assume 0 == ~mode1~0 % 256; 1009#L379 assume 0 == ~mode2~0 % 256; 1037#L380 assume 0 == ~mode3~0 % 256;init_~tmp___5~0 := 1; 936#L354-1 init_#res := init_~tmp___5~0; 937#L463 main_#t~ret40 := init_#res;main_~i2~0 := main_#t~ret40;havoc main_#t~ret40; 989#L557 assume !(0 == main_~i2~0); 990#L557-2 ~p12_old~0 := ~nomsg~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~nomsg~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~nomsg~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~nomsg~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~nomsg~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~nomsg~0;~p32_new~0 := ~nomsg~0;main_~i2~0 := 0; 939#L571-2 [2020-10-19 20:14:00,780 INFO L796 eck$LassoCheckResult]: Loop: 939#L571-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_#t~ite8; 955#L122 assume !(0 != ~mode1~0 % 256); 967#L147 assume !(~r1~0 < 1); 962#L147-1 ~mode1~0 := 1; 963#L122-2 havoc node2_#t~ite9, node2_#t~ite10; 1007#L165 assume !(0 != ~mode2~0 % 256); 1035#L190 assume !(~r2~0 < 2); 965#L190-1 ~mode2~0 := 1; 1033#L165-2 havoc node3_#t~ite11, node3_#t~ite12; 925#L208 assume !(0 != ~mode3~0 % 256); 927#L233 assume !(~r3~0 < 2); 981#L233-1 ~mode3~0 := 1; 953#L208-2 ~p12_old~0 := ~p12_new~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~p13_new~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~p21_new~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~p23_new~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~p31_new~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~p32_new~0;~p32_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 954#L471 assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; 960#L472 assume ~st1~0 + ~nl1~0 <= 1; 961#L473 assume ~st2~0 + ~nl2~0 <= 1; 1026#L474 assume ~st3~0 + ~nl3~0 <= 1; 1027#L475 assume !(~r1~0 >= 2); 1053#L478 assume 0 == ~st1~0 + ~st2~0 + ~st3~0; 1054#L479 assume ~r1~0 < 2; 1101#L484 assume !(~r1~0 >= 2); 1003#L488 assume 0 == ~nl1~0 + ~nl2~0 + ~nl3~0; 1004#L489 assume ~r1~0 < 2;check_~tmp~1 := 1; 1034#L471-1 check_#res := check_~tmp~1; 946#L519 main_#t~ret41 := check_#res;main_~c1~0 := main_#t~ret41;havoc main_#t~ret41;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 947#L601 assume !(0 == assert_~arg % 256); 938#L596 main_#t~post42 := main_~i2~0;main_~i2~0 := 1 + main_#t~post42;havoc main_#t~post42; 939#L571-2 [2020-10-19 20:14:00,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:14:00,780 INFO L82 PathProgramCache]: Analyzing trace with hash -97176065, now seen corresponding path program 2 times [2020-10-19 20:14:00,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:14:00,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810327758] [2020-10-19 20:14:00,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:14:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:14:00,860 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:14:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:14:00,926 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:14:00,962 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:14:00,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:14:00,963 INFO L82 PathProgramCache]: Analyzing trace with hash -77605052, now seen corresponding path program 1 times [2020-10-19 20:14:00,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:14:00,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198776599] [2020-10-19 20:14:00,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:14:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:14:00,978 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:14:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:14:00,986 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:14:00,997 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:14:00,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:14:00,999 INFO L82 PathProgramCache]: Analyzing trace with hash 2113327750, now seen corresponding path program 1 times [2020-10-19 20:14:00,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:14:01,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835120068] [2020-10-19 20:14:01,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:14:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:14:01,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:14:01,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835120068] [2020-10-19 20:14:01,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 20:14:01,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 20:14:01,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925765407] [2020-10-19 20:14:01,360 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 95 [2020-10-19 20:14:01,592 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2020-10-19 20:14:01,607 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:14:01,608 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:14:01,608 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:14:01,608 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:14:01,609 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 20:14:01,609 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:14:01,609 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:14:01,609 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:14:01,610 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_floodmax.3.4.ufo.BOUNDED-6.pals.c_Iteration4_Loop [2020-10-19 20:14:01,610 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:14:01,610 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:14:01,639 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:01,652 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:01,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:01,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:01,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:01,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:01,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:01,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:01,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:01,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:01,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:01,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:01,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:01,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:01,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:01,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:01,724 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:01,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:01,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:01,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:01,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:01,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:01,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:01,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:01,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:02,257 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:14:02,258 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) [2020-10-19 20:14:02,273 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:14:02,274 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 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) [2020-10-19 20:14:02,326 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 20:14:02,326 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 [2020-10-19 20:14:02,484 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 20:14:02,486 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:14:02,487 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:14:02,487 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:14:02,487 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:14:02,488 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 20:14:02,488 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:14:02,488 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:14:02,488 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:14:02,488 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_floodmax.3.4.ufo.BOUNDED-6.pals.c_Iteration4_Loop [2020-10-19 20:14:02,488 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:14:02,488 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:14:02,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:02,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:02,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:02,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:02,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:02,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:02,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:02,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:02,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:02,532 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:02,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:02,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:02,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:02,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:02,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:02,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:02,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:02,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:02,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:02,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:02,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:02,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:02,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:02,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:02,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:14:03,018 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:14:03,024 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-19 20:14:03,029 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 [2020-10-19 20:14:03,032 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:14:03,032 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:14:03,033 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:14:03,033 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:14:03,033 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:14:03,036 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:14:03,037 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:14:03,041 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 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 [2020-10-19 20:14:03,084 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 [2020-10-19 20:14:03,086 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:14:03,087 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:14:03,087 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:14:03,087 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:14:03,090 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:14:03,090 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:14:03,099 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:14:03,135 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 [2020-10-19 20:14:03,137 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:14:03,137 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:14:03,137 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:14:03,137 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:14:03,137 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:14:03,139 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:14:03,139 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:14:03,143 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) [2020-10-19 20:14:03,178 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 [2020-10-19 20:14:03,179 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:14:03,179 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:14:03,180 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:14:03,180 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:14:03,180 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:14:03,181 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:14:03,181 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:14:03,186 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 [2020-10-19 20:14:03,220 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 [2020-10-19 20:14:03,221 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:14:03,222 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:14:03,222 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:14:03,222 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:14:03,222 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:14:03,223 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:14:03,223 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:14:03,229 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 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 [2020-10-19 20:14:03,264 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 [2020-10-19 20:14:03,265 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:14:03,266 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:14:03,266 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:14:03,266 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:14:03,268 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:14:03,269 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:14:03,272 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 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 [2020-10-19 20:14:03,299 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 [2020-10-19 20:14:03,301 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:14:03,301 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:14:03,301 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:14:03,302 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:14:03,302 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:14:03,303 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:14:03,303 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:14:03,307 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:14:03,353 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 [2020-10-19 20:14:03,355 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:14:03,355 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:14:03,355 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:14:03,355 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:14:03,355 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:14:03,356 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:14:03,356 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:14:03,358 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:14:03,399 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 [2020-10-19 20:14:03,401 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:14:03,401 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:14:03,402 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:14:03,402 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:14:03,404 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:14:03,404 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:14:03,409 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) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:14:03,439 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 [2020-10-19 20:14:03,440 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:14:03,441 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:14:03,441 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:14:03,441 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:14:03,441 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:14:03,442 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:14:03,442 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:14:03,444 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 20:14:03,451 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 20:14:03,451 INFO L444 ModelExtractionUtils]: 0 out of 3 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 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 [2020-10-19 20:14:03,465 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 20:14:03,465 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 20:14:03,465 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 20:14:03,466 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i2~0) = -2*ULTIMATE.start_main_~i2~0 + 11 Supporting invariants [] [2020-10-19 20:14:03,496 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 20:14:03,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:14:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:14:03,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 20:14:03,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:14:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:14:03,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 20:14:03,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:14:03,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:14:03,883 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 [2020-10-19 20:14:03,883 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 177 states and 260 transitions. cyclomatic complexity: 84 Second operand 3 states. [2020-10-19 20:14:03,940 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 177 states and 260 transitions. cyclomatic complexity: 84. Second operand 3 states. Result 296 states and 445 transitions. Complement of second has 4 states. [2020-10-19 20:14:03,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-19 20:14:03,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 20:14:03,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2020-10-19 20:14:03,943 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 183 transitions. Stem has 45 letters. Loop has 27 letters. [2020-10-19 20:14:03,946 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:14:03,946 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 183 transitions. Stem has 72 letters. Loop has 27 letters. [2020-10-19 20:14:03,947 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:14:03,947 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 183 transitions. Stem has 45 letters. Loop has 54 letters. [2020-10-19 20:14:03,948 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:14:03,949 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 296 states and 445 transitions. [2020-10-19 20:14:03,952 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 20:14:03,952 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 296 states to 0 states and 0 transitions. [2020-10-19 20:14:03,952 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 20:14:03,953 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 20:14:03,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 20:14:03,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 20:14:03,953 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 20:14:03,953 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 20:14:03,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 20:14:03,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 20:14:03,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 20:14:03,954 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 3 states. [2020-10-19 20:14:03,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 20:14:03,955 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-10-19 20:14:03,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 20:14:03,955 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-10-19 20:14:03,956 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 20:14:03,956 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 20:14:03,956 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 20:14:03,956 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 20:14:03,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 20:14:03,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 20:14:03,957 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 20:14:03,957 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 20:14:03,957 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 20:14:03,957 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-19 20:14:03,957 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-19 20:14:03,958 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 20:14:03,958 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-19 20:14:03,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 08:14:03 BoogieIcfgContainer [2020-10-19 20:14:03,966 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 20:14:03,966 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 20:14:03,967 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 20:14:03,967 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 20:14:03,967 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 08:13:59" (3/4) ... [2020-10-19 20:14:03,971 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 20:14:03,971 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 20:14:03,974 INFO L168 Benchmark]: Toolchain (without parser) took 6271.80 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 228.6 MB). Free memory was 960.0 MB in the beginning and 928.4 MB in the end (delta: 31.6 MB). Peak memory consumption was 260.2 MB. Max. memory is 11.5 GB. [2020-10-19 20:14:03,974 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 20:14:03,975 INFO L168 Benchmark]: CACSL2BoogieTranslator took 755.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -180.1 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2020-10-19 20:14:03,976 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.86 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 20:14:03,976 INFO L168 Benchmark]: Boogie Preprocessor took 43.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 20:14:03,977 INFO L168 Benchmark]: RCFGBuilder took 806.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 57.9 MB). Peak memory consumption was 57.9 MB. Max. memory is 11.5 GB. [2020-10-19 20:14:03,978 INFO L168 Benchmark]: BuchiAutomizer took 4593.06 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 75.5 MB). Free memory was 1.1 GB in the beginning and 928.4 MB in the end (delta: 148.4 MB). Peak memory consumption was 223.9 MB. Max. memory is 11.5 GB. [2020-10-19 20:14:03,979 INFO L168 Benchmark]: Witness Printer took 5.21 ms. Allocated memory is still 1.3 GB. Free memory is still 928.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 20:14:03,982 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 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 755.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -180.1 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 58.86 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 43.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 806.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 57.9 MB). Peak memory consumption was 57.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4593.06 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 75.5 MB). Free memory was 1.1 GB in the beginning and 928.4 MB in the end (delta: 148.4 MB). Peak memory consumption was 223.9 MB. Max. memory is 11.5 GB. * Witness Printer took 5.21 ms. Allocated memory is still 1.3 GB. Free memory is still 928.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (4 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * i2 + 11 and consists of 3 locations. 4 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.5s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 3.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 68 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 177 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 854 SDtfs, 375 SDslu, 1505 SDs, 0 SdLazy, 55 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc0 concLT1 SILN0 SILU0 SILI2 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital127 mio100 ax128 hnf105 lsp22 ukn100 mio100 lsp100 div123 bol100 ite100 ukn100 eq182 hnf86 smp100 dnf100 smp100 tf102 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 24ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 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...