./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-invgen/apache-get-tag.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.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/loop-invgen/apache-get-tag.i -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 2d5e1e94b71e060a77443e2afd511bc50cc1649d ............................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 07:06:10,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 07:06:10,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 07:06:10,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 07:06:10,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 07:06:10,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 07:06:10,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 07:06:10,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 07:06:10,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 07:06:10,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 07:06:10,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 07:06:10,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 07:06:10,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 07:06:10,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 07:06:10,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 07:06:10,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 07:06:10,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 07:06:10,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 07:06:10,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 07:06:10,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 07:06:10,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 07:06:10,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 07:06:10,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 07:06:10,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 07:06:10,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 07:06:10,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 07:06:10,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 07:06:10,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 07:06:10,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 07:06:10,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 07:06:10,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 07:06:10,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 07:06:10,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 07:06:10,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 07:06:10,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 07:06:10,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 07:06:10,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 07:06:10,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 07:06:10,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 07:06:10,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 07:06:10,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 07:06:10,394 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-20 07:06:10,440 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 07:06:10,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 07:06:10,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 07:06:10,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 07:06:10,443 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 07:06:10,443 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 07:06:10,444 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 07:06:10,444 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 07:06:10,444 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 07:06:10,444 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 07:06:10,445 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 07:06:10,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 07:06:10,446 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 07:06:10,447 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 07:06:10,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 07:06:10,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 07:06:10,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 07:06:10,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 07:06:10,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 07:06:10,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 07:06:10,449 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 07:06:10,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 07:06:10,449 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 07:06:10,449 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 07:06:10,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 07:06:10,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 07:06:10,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 07:06:10,450 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 07:06:10,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 07:06:10,451 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 07:06:10,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 07:06:10,451 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 07:06:10,453 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 07:06:10,454 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 -> 2d5e1e94b71e060a77443e2afd511bc50cc1649d [2020-10-20 07:06:10,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 07:06:10,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 07:06:10,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 07:06:10,698 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 07:06:10,698 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 07:06:10,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/apache-get-tag.i [2020-10-20 07:06:10,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/918827e2f/04fff536eb9b49dcafdd3921614ad784/FLAG315d0e409 [2020-10-20 07:06:11,263 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 07:06:11,264 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i [2020-10-20 07:06:11,273 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/918827e2f/04fff536eb9b49dcafdd3921614ad784/FLAG315d0e409 [2020-10-20 07:06:11,623 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/918827e2f/04fff536eb9b49dcafdd3921614ad784 [2020-10-20 07:06:11,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 07:06:11,633 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 07:06:11,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 07:06:11,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 07:06:11,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 07:06:11,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 07:06:11" (1/1) ... [2020-10-20 07:06:11,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b06922a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:11, skipping insertion in model container [2020-10-20 07:06:11,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 07:06:11" (1/1) ... [2020-10-20 07:06:11,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 07:06:11,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 07:06:11,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 07:06:11,970 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 07:06:11,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 07:06:12,012 INFO L208 MainTranslator]: Completed translation [2020-10-20 07:06:12,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:12 WrapperNode [2020-10-20 07:06:12,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 07:06:12,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 07:06:12,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 07:06:12,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 07:06:12,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:12" (1/1) ... [2020-10-20 07:06:12,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:12" (1/1) ... [2020-10-20 07:06:12,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 07:06:12,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 07:06:12,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 07:06:12,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 07:06:12,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:12" (1/1) ... [2020-10-20 07:06:12,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:12" (1/1) ... [2020-10-20 07:06:12,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:12" (1/1) ... [2020-10-20 07:06:12,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:12" (1/1) ... [2020-10-20 07:06:12,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:12" (1/1) ... [2020-10-20 07:06:12,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:12" (1/1) ... [2020-10-20 07:06:12,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:12" (1/1) ... [2020-10-20 07:06:12,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 07:06:12,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 07:06:12,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 07:06:12,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 07:06:12,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:12" (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 [2020-10-20 07:06:12,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 07:06:12,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 07:06:12,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 07:06:12,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 07:06:12,583 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 07:06:12,584 INFO L298 CfgBuilder]: Removed 70 assume(true) statements. [2020-10-20 07:06:12,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:06:12 BoogieIcfgContainer [2020-10-20 07:06:12,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 07:06:12,587 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 07:06:12,587 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 07:06:12,591 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 07:06:12,592 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:06:12,592 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 07:06:11" (1/3) ... [2020-10-20 07:06:12,594 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5bb92e78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 07:06:12, skipping insertion in model container [2020-10-20 07:06:12,594 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:06:12,594 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:12" (2/3) ... [2020-10-20 07:06:12,594 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5bb92e78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 07:06:12, skipping insertion in model container [2020-10-20 07:06:12,595 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:06:12,595 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:06:12" (3/3) ... [2020-10-20 07:06:12,596 INFO L373 chiAutomizerObserver]: Analyzing ICFG apache-get-tag.i [2020-10-20 07:06:12,658 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 07:06:12,659 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 07:06:12,659 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 07:06:12,659 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 07:06:12,667 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 07:06:12,667 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 07:06:12,667 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 07:06:12,667 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 07:06:12,706 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states. [2020-10-20 07:06:12,737 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 40 [2020-10-20 07:06:12,737 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:06:12,737 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:06:12,745 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 07:06:12,745 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 07:06:12,746 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 07:06:12,746 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states. [2020-10-20 07:06:12,753 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 40 [2020-10-20 07:06:12,753 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:06:12,753 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:06:12,754 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 07:06:12,754 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 07:06:12,763 INFO L794 eck$LassoCheckResult]: Stem: 48#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 21#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~pre4, main_#t~nondet5, main_#t~post6, main_#t~post7, main_#t~nondet8, main_#t~nondet9, main_#t~post10, main_#t~nondet11, main_#t~post12, main_~tagbuf_len~0, main_~t~0;havoc main_~tagbuf_len~0;havoc main_~t~0;main_~tagbuf_len~0 := main_#t~nondet3;havoc main_#t~nondet3; 14#L29true assume main_~tagbuf_len~0 >= 1; 11#L29-1true main_~t~0 := 0;main_#t~pre4 := main_~tagbuf_len~0 - 1;main_~tagbuf_len~0 := main_~tagbuf_len~0 - 1;havoc main_#t~pre4; 89#L32-2true [2020-10-20 07:06:12,763 INFO L796 eck$LassoCheckResult]: Loop: 89#L32-2true assume !false; 52#L33true assume !(main_~t~0 == main_~tagbuf_len~0); 67#L38true assume !(0 != main_#t~nondet5);havoc main_#t~nondet5;__VERIFIER_assert_#in~cond := (if 0 <= main_~t~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 27#L18-6true assume !(0 == __VERIFIER_assert_~cond); 22#L18-8true __VERIFIER_assert_#in~cond := (if main_~t~0 <= main_~tagbuf_len~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 90#L18-9true assume !(0 == __VERIFIER_assert_~cond); 86#L18-11true main_#t~post6 := main_~t~0;main_~t~0 := 1 + main_#t~post6;havoc main_#t~post6; 89#L32-2true [2020-10-20 07:06:12,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:12,770 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2020-10-20 07:06:12,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:12,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357856648] [2020-10-20 07:06:12,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:12,871 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:12,886 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:12,909 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:12,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:12,911 INFO L82 PathProgramCache]: Analyzing trace with hash -2095080420, now seen corresponding path program 1 times [2020-10-20 07:06:12,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:12,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943055071] [2020-10-20 07:06:12,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:12,925 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:12,938 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:12,942 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:12,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:12,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1748781642, now seen corresponding path program 1 times [2020-10-20 07:06:12,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:12,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142138736] [2020-10-20 07:06:12,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:12,965 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:12,983 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:12,991 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:13,101 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-10-20 07:06:13,102 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 07:06:13,166 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:13,168 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:13,168 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:13,168 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:13,168 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 07:06:13,169 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:13,169 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:13,169 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:13,169 INFO L133 ssoRankerPreferences]: Filename of dumped script: apache-get-tag.i_Iteration1_Loop [2020-10-20 07:06:13,170 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:13,170 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:13,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:13,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:13,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:13,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:13,334 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:13,335 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) [2020-10-20 07:06:13,352 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:13,352 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:06:13,362 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:06:13,363 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:06:13,410 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:06:13,411 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:06:13,415 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:06:13,415 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5=0} Honda state: {ULTIMATE.start_main_#t~nondet5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] Waiting until toolchain timeout for monitored process 3 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:06:13,457 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:06:13,457 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:13,497 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 07:06:13,497 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:06:13,552 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 07:06:13,554 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:13,555 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:13,555 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:13,555 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:13,556 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 07:06:13,556 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:13,557 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:13,557 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:13,557 INFO L133 ssoRankerPreferences]: Filename of dumped script: apache-get-tag.i_Iteration1_Loop [2020-10-20 07:06:13,557 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:13,557 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:13,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:13,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:13,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:13,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:13,687 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:13,693 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:13,701 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 [2020-10-20 07:06:13,704 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:13,704 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:06:13,705 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:13,705 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:13,705 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:13,708 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:06:13,708 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:06:13,712 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) [2020-10-20 07:06:13,760 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 [2020-10-20 07:06:13,762 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:13,763 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:06:13,763 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:13,763 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:13,763 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:13,765 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:06:13,765 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 [2020-10-20 07:06:13,768 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) [2020-10-20 07:06:13,804 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 Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:13,806 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:13,807 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:06:13,807 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:13,807 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:13,808 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:13,809 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:06:13,810 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:06:13,818 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 [2020-10-20 07:06:13,851 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 [2020-10-20 07:06:13,852 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:13,852 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:06:13,852 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:13,853 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:13,853 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:13,862 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:06:13,862 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:06:13,866 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 07:06:13,871 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 07:06:13,872 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-20 07:06:13,877 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 07:06:13,877 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 07:06:13,878 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 07:06:13,879 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~tagbuf_len~0, ULTIMATE.start_main_~t~0) = 1*ULTIMATE.start_main_~tagbuf_len~0 - 1*ULTIMATE.start_main_~t~0 Supporting invariants [] [2020-10-20 07:06:13,913 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 07:06:13,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:13,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 07:06:13,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:13,987 WARN L261 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 07:06:13,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:14,070 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-10-20 07:06:14,070 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 07:06:14,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 07:06:14,114 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-10-20 07:06:14,116 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states. Second operand 6 states. [2020-10-20 07:06:14,399 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states.. Second operand 6 states. Result 259 states and 349 transitions. Complement of second has 11 states. [2020-10-20 07:06:14,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2020-10-20 07:06:14,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-20 07:06:14,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 263 transitions. [2020-10-20 07:06:14,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 263 transitions. Stem has 4 letters. Loop has 7 letters. [2020-10-20 07:06:14,405 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:14,405 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 263 transitions. Stem has 11 letters. Loop has 7 letters. [2020-10-20 07:06:14,406 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:14,406 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 263 transitions. Stem has 4 letters. Loop has 14 letters. [2020-10-20 07:06:14,406 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:14,407 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 259 states and 349 transitions. [2020-10-20 07:06:14,417 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 07:06:14,420 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 259 states to 0 states and 0 transitions. [2020-10-20 07:06:14,421 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 07:06:14,421 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 07:06:14,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 07:06:14,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 07:06:14,422 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 07:06:14,422 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 07:06:14,423 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 07:06:14,423 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 07:06:14,423 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 07:06:14,423 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 07:06:14,423 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 07:06:14,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 07:06:14 BoogieIcfgContainer [2020-10-20 07:06:14,430 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 07:06:14,431 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 07:06:14,431 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 07:06:14,431 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 07:06:14,432 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:06:12" (3/4) ... [2020-10-20 07:06:14,435 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 07:06:14,435 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 07:06:14,438 INFO L168 Benchmark]: Toolchain (without parser) took 2808.84 ms. Allocated memory was 35.1 MB in the beginning and 57.7 MB in the end (delta: 22.5 MB). Free memory was 6.6 MB in the beginning and 32.1 MB in the end (delta: -25.5 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 07:06:14,439 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 35.1 MB. Free memory was 11.8 MB in the beginning and 11.7 MB in the end (delta: 47.2 kB). Peak memory consumption was 47.2 kB. Max. memory is 14.3 GB. [2020-10-20 07:06:14,440 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.36 ms. Allocated memory was 38.3 MB in the beginning and 46.1 MB in the end (delta: 7.9 MB). Free memory was 20.2 MB in the beginning and 27.7 MB in the end (delta: -7.5 MB). Peak memory consumption was 9.2 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:14,441 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.48 ms. Allocated memory is still 46.1 MB. Free memory was 27.6 MB in the beginning and 25.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:14,441 INFO L168 Benchmark]: Boogie Preprocessor took 46.52 ms. Allocated memory is still 46.1 MB. Free memory was 25.3 MB in the beginning and 23.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:14,443 INFO L168 Benchmark]: RCFGBuilder took 473.58 ms. Allocated memory was 46.1 MB in the beginning and 48.2 MB in the end (delta: 2.1 MB). Free memory was 23.6 MB in the beginning and 12.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:14,444 INFO L168 Benchmark]: BuchiAutomizer took 1843.08 ms. Allocated memory was 48.2 MB in the beginning and 57.7 MB in the end (delta: 9.4 MB). Free memory was 11.9 MB in the beginning and 32.6 MB in the end (delta: -20.7 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 07:06:14,444 INFO L168 Benchmark]: Witness Printer took 4.61 ms. Allocated memory is still 57.7 MB. Free memory was 32.6 MB in the beginning and 32.1 MB in the end (delta: 530.1 kB). Peak memory consumption was 530.1 kB. Max. memory is 14.3 GB. [2020-10-20 07:06:14,450 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 35.1 MB. Free memory was 11.8 MB in the beginning and 11.7 MB in the end (delta: 47.2 kB). Peak memory consumption was 47.2 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 369.36 ms. Allocated memory was 38.3 MB in the beginning and 46.1 MB in the end (delta: 7.9 MB). Free memory was 20.2 MB in the beginning and 27.7 MB in the end (delta: -7.5 MB). Peak memory consumption was 9.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 52.48 ms. Allocated memory is still 46.1 MB. Free memory was 27.6 MB in the beginning and 25.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 46.52 ms. Allocated memory is still 46.1 MB. Free memory was 25.3 MB in the beginning and 23.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 473.58 ms. Allocated memory was 46.1 MB in the beginning and 48.2 MB in the end (delta: 2.1 MB). Free memory was 23.6 MB in the beginning and 12.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 1843.08 ms. Allocated memory was 48.2 MB in the beginning and 57.7 MB in the end (delta: 9.4 MB). Free memory was 11.9 MB in the beginning and 32.6 MB in the end (delta: -20.7 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 4.61 ms. Allocated memory is still 57.7 MB. Free memory was 32.6 MB in the beginning and 32.1 MB in the end (delta: 530.1 kB). Peak memory consumption was 530.1 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function tagbuf_len + -1 * t and consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 60 SDtfs, 98 SDslu, 135 SDs, 0 SdLazy, 110 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital26 mio100 ax100 hnf100 lsp65 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf96 smp73 dnf100 smp100 tf110 neg95 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 17ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...