./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-invgen/half_2.i --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/loop-invgen/half_2.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 01541f1f75545c90a6601266aa0ae7ba69e17c76 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:13:01,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 19:13:01,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 19:13:01,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 19:13:01,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 19:13:01,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 19:13:01,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 19:13:01,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 19:13:01,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 19:13:01,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 19:13:01,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 19:13:01,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 19:13:01,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 19:13:01,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 19:13:01,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 19:13:01,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 19:13:01,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 19:13:01,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 19:13:01,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 19:13:01,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 19:13:01,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 19:13:01,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 19:13:01,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 19:13:01,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 19:13:01,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 19:13:01,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 19:13:01,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 19:13:01,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 19:13:01,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 19:13:01,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 19:13:01,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 19:13:01,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 19:13:01,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 19:13:01,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 19:13:01,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 19:13:01,239 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 19:13:01,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 19:13:01,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 19:13:01,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 19:13:01,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 19:13:01,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 19:13:01,244 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-19 19:13:01,293 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 19:13:01,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 19:13:01,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 19:13:01,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 19:13:01,298 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 19:13:01,298 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 19:13:01,299 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 19:13:01,299 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 19:13:01,299 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 19:13:01,299 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 19:13:01,300 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 19:13:01,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 19:13:01,300 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 19:13:01,300 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 19:13:01,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 19:13:01,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 19:13:01,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 19:13:01,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 19:13:01,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 19:13:01,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 19:13:01,302 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 19:13:01,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 19:13:01,304 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 19:13:01,304 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 19:13:01,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 19:13:01,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 19:13:01,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 19:13:01,305 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 19:13:01,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 19:13:01,305 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 19:13:01,305 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 19:13:01,306 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 19:13:01,307 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 19:13:01,307 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 -> 01541f1f75545c90a6601266aa0ae7ba69e17c76 [2020-10-19 19:13:01,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 19:13:01,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 19:13:01,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 19:13:01,634 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 19:13:01,635 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 19:13:01,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/half_2.i [2020-10-19 19:13:01,696 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264b6b96e/7a59c48959bc4fd08338624e5082136f/FLAGdea883368 [2020-10-19 19:13:02,174 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 19:13:02,176 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/half_2.i [2020-10-19 19:13:02,184 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264b6b96e/7a59c48959bc4fd08338624e5082136f/FLAGdea883368 [2020-10-19 19:13:02,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264b6b96e/7a59c48959bc4fd08338624e5082136f [2020-10-19 19:13:02,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 19:13:02,554 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 19:13:02,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 19:13:02,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 19:13:02,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 19:13:02,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 07:13:02" (1/1) ... [2020-10-19 19:13:02,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47b14be5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:02, skipping insertion in model container [2020-10-19 19:13:02,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 07:13:02" (1/1) ... [2020-10-19 19:13:02,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 19:13:02,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 19:13:02,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 19:13:02,767 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 19:13:02,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 19:13:02,808 INFO L208 MainTranslator]: Completed translation [2020-10-19 19:13:02,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:02 WrapperNode [2020-10-19 19:13:02,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 19:13:02,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 19:13:02,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 19:13:02,810 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 19:13:02,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:02" (1/1) ... [2020-10-19 19:13:02,884 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:02" (1/1) ... [2020-10-19 19:13:02,904 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 19:13:02,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 19:13:02,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 19:13:02,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 19:13:02,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:02" (1/1) ... [2020-10-19 19:13:02,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:02" (1/1) ... [2020-10-19 19:13:02,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:02" (1/1) ... [2020-10-19 19:13:02,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:02" (1/1) ... [2020-10-19 19:13:02,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:02" (1/1) ... [2020-10-19 19:13:02,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:02" (1/1) ... [2020-10-19 19:13:02,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:02" (1/1) ... [2020-10-19 19:13:02,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 19:13:02,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 19:13:02,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 19:13:02,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 19:13:02,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:02" (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 19:13:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 19:13:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 19:13:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 19:13:03,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 19:13:03,218 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 19:13:03,219 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-19 19:13:03,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:13:03 BoogieIcfgContainer [2020-10-19 19:13:03,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 19:13:03,222 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 19:13:03,222 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 19:13:03,226 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 19:13:03,227 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:13:03,227 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 07:13:02" (1/3) ... [2020-10-19 19:13:03,228 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29d6c7c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 07:13:03, skipping insertion in model container [2020-10-19 19:13:03,228 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:13:03,229 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:02" (2/3) ... [2020-10-19 19:13:03,229 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29d6c7c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 07:13:03, skipping insertion in model container [2020-10-19 19:13:03,229 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:13:03,229 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:13:03" (3/3) ... [2020-10-19 19:13:03,231 INFO L373 chiAutomizerObserver]: Analyzing ICFG half_2.i [2020-10-19 19:13:03,289 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 19:13:03,290 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 19:13:03,290 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 19:13:03,291 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 19:13:03,291 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 19:13:03,291 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 19:13:03,291 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 19:13:03,292 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 19:13:03,313 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-10-19 19:13:03,345 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-10-19 19:13:03,345 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 19:13:03,345 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 19:13:03,353 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-19 19:13:03,354 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-19 19:13:03,354 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 19:13:03,354 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-10-19 19:13:03,356 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-10-19 19:13:03,356 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 19:13:03,357 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 19:13:03,357 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-19 19:13:03,357 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-19 19:13:03,366 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 10#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~n~0, main_~i~0, main_~k~0, main_~j~0;havoc main_~n~0;havoc main_~i~0;havoc main_~k~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 4#L27true assume !!(main_~n~0 <= 1000000);main_~k~0 := main_~n~0;main_~i~0 := 0; 6#L30-2true [2020-10-19 19:13:03,367 INFO L796 eck$LassoCheckResult]: Loop: 6#L30-2true assume !!(main_~i~0 < main_~n~0);main_#t~post4 := main_~k~0;main_~k~0 := main_#t~post4 - 1;havoc main_#t~post4;main_~i~0 := 2 + main_~i~0; 6#L30-2true [2020-10-19 19:13:03,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:03,374 INFO L82 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2020-10-19 19:13:03,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:13:03,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125943117] [2020-10-19 19:13:03,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:13:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:03,499 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:03,514 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:03,536 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:13:03,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:03,538 INFO L82 PathProgramCache]: Analyzing trace with hash 47, now seen corresponding path program 1 times [2020-10-19 19:13:03,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:13:03,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893224519] [2020-10-19 19:13:03,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:13:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:03,545 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:03,549 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:03,551 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:13:03,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:03,553 INFO L82 PathProgramCache]: Analyzing trace with hash 925676, now seen corresponding path program 1 times [2020-10-19 19:13:03,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:13:03,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506010845] [2020-10-19 19:13:03,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:13:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:03,575 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:03,601 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:03,609 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:13:03,672 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 19:13:03,673 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 19:13:03,674 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 19:13:03,674 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 19:13:03,674 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 19:13:03,675 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:03,675 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 19:13:03,675 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 19:13:03,675 INFO L133 ssoRankerPreferences]: Filename of dumped script: half_2.i_Iteration1_Loop [2020-10-19 19:13:03,676 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 19:13:03,676 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 19:13:03,699 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 19:13:03,712 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 19:13:03,737 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 19:13:03,792 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 19:13:03,793 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:03,806 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 19:13:03,806 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:03,844 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 19:13:03,845 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 19:13:03,872 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 19:13:03,873 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~k~0=0} Honda state: {ULTIMATE.start_main_~k~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~k~0=0}, {ULTIMATE.start_main_~k~0=0}, {ULTIMATE.start_main_~k~0=-1}] Lambdas: [1, 3, 1] Nus: [0, 0] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:03,908 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 19:13:03,908 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:03,942 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 19:13:03,942 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 19:13:04,081 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 19:13:04,084 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 19:13:04,084 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 19:13:04,084 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 19:13:04,084 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 19:13:04,084 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 19:13:04,085 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:04,085 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 19:13:04,085 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 19:13:04,085 INFO L133 ssoRankerPreferences]: Filename of dumped script: half_2.i_Iteration1_Loop [2020-10-19 19:13:04,085 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 19:13:04,086 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 19:13:04,087 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 19:13:04,097 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 19:13:04,106 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 19:13:04,163 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 19:13:04,169 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) [2020-10-19 19:13:04,186 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 19:13:04,193 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 19:13:04,193 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 19:13:04,194 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 19:13:04,194 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 19:13:04,194 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 19:13:04,198 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 19:13:04,198 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 19:13:04,208 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 19:13:04,257 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 19:13:04,261 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 19:13:04,261 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 19:13:04,261 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 19:13:04,261 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 19:13:04,262 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 19:13:04,267 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 19:13:04,268 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 19:13:04,276 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 19:13:04,281 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 19:13:04,281 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:04,291 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 19:13:04,292 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 19:13:04,292 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 19:13:04,293 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:04,340 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 19:13:04,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:13:04,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 19:13:04,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 19:13:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:13:04,410 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 19:13:04,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 19:13:04,412 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 19:13:04,431 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-10-19 19:13:04,432 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 2 states. [2020-10-19 19:13:04,489 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states.. Second operand 2 states. Result 39 states and 51 transitions. Complement of second has 5 states. [2020-10-19 19:13:04,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-19 19:13:04,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-19 19:13:04,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 36 transitions. [2020-10-19 19:13:04,495 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 36 transitions. Stem has 3 letters. Loop has 1 letters. [2020-10-19 19:13:04,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 19:13:04,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 36 transitions. Stem has 4 letters. Loop has 1 letters. [2020-10-19 19:13:04,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 19:13:04,497 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 36 transitions. Stem has 3 letters. Loop has 2 letters. [2020-10-19 19:13:04,497 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 19:13:04,498 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 51 transitions. [2020-10-19 19:13:04,502 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 19:13:04,507 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 9 states and 11 transitions. [2020-10-19 19:13:04,508 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-10-19 19:13:04,509 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-10-19 19:13:04,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2020-10-19 19:13:04,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 19:13:04,510 INFO L691 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2020-10-19 19:13:04,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2020-10-19 19:13:04,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-10-19 19:13:04,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-19 19:13:04,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2020-10-19 19:13:04,538 INFO L714 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2020-10-19 19:13:04,538 INFO L594 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2020-10-19 19:13:04,538 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 19:13:04,538 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 11 transitions. [2020-10-19 19:13:04,539 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 19:13:04,539 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 19:13:04,539 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 19:13:04,540 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-19 19:13:04,540 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 19:13:04,540 INFO L794 eck$LassoCheckResult]: Stem: 91#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 89#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~n~0, main_~i~0, main_~k~0, main_~j~0;havoc main_~n~0;havoc main_~i~0;havoc main_~k~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 90#L27 assume !!(main_~n~0 <= 1000000);main_~k~0 := main_~n~0;main_~i~0 := 0; 95#L30-2 assume !(main_~i~0 < main_~n~0); 94#L30-3 main_~j~0 := 0; 93#L35-2 [2020-10-19 19:13:04,541 INFO L796 eck$LassoCheckResult]: Loop: 93#L35-2 assume !!(main_~j~0 < (if main_~n~0 < 0 && 0 != main_~n~0 % 2 then 1 + main_~n~0 / 2 else main_~n~0 / 2));__VERIFIER_assert_#in~cond := (if main_~k~0 > 0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 96#L18 assume !(0 == __VERIFIER_assert_~cond); 92#L18-2 main_#t~post5 := main_~k~0;main_~k~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 93#L35-2 [2020-10-19 19:13:04,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:04,541 INFO L82 PathProgramCache]: Analyzing trace with hash 28695914, now seen corresponding path program 1 times [2020-10-19 19:13:04,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:13:04,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041488361] [2020-10-19 19:13:04,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:13:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:04,554 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:04,565 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:04,573 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:13:04,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:04,574 INFO L82 PathProgramCache]: Analyzing trace with hash 59039, now seen corresponding path program 1 times [2020-10-19 19:13:04,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:13:04,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930723925] [2020-10-19 19:13:04,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:13:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:04,589 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:04,600 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:04,603 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:13:04,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:04,604 INFO L82 PathProgramCache]: Analyzing trace with hash 181511318, now seen corresponding path program 1 times [2020-10-19 19:13:04,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:13:04,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773638319] [2020-10-19 19:13:04,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:13:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:13:04,684 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 19:13:04,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773638319] [2020-10-19 19:13:04,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 19:13:04,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 19:13:04,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890356874] [2020-10-19 19:13:04,804 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 19:13:04,805 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 19:13:04,805 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 19:13:04,805 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 19:13:04,805 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 19:13:04,805 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:04,805 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 19:13:04,806 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 19:13:04,806 INFO L133 ssoRankerPreferences]: Filename of dumped script: half_2.i_Iteration2_Loop [2020-10-19 19:13:04,806 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 19:13:04,806 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 19:13:04,809 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 19:13:04,813 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 19:13:04,820 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 19:13:04,824 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 19:13:04,869 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 19:13:05,084 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 19:13:05,085 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:05,097 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 19:13:05,098 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:05,103 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 19:13:05,103 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:05,149 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 19:13:05,150 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:05,155 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 19:13:05,155 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:05,197 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 19:13:05,197 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:05,201 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 19:13:05,202 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:05,227 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 19:13:05,227 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:05,283 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 19:13:05,283 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:05,610 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 19:13:05,613 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 19:13:05,613 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 19:13:05,613 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 19:13:05,613 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 19:13:05,613 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 19:13:05,614 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:05,614 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 19:13:05,614 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 19:13:05,614 INFO L133 ssoRankerPreferences]: Filename of dumped script: half_2.i_Iteration2_Loop [2020-10-19 19:13:05,614 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 19:13:05,614 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 19:13:05,617 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 19:13:05,620 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 19:13:05,622 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 19:13:05,629 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 19:13:05,675 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 19:13:05,888 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 19:13:05,888 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:05,901 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 19:13:05,903 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 19:13:05,903 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 19:13:05,903 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 19:13:05,904 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 19:13:05,904 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 19:13:05,905 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 19:13:05,905 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 19:13:05,907 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:05,961 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 19:13:05,963 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 19:13:05,964 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 19:13:05,964 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 19:13:05,964 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 19:13:05,964 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 19:13:05,965 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 19:13:05,965 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:05,967 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:06,021 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 19:13:06,025 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 19:13:06,025 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 19:13:06,025 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 19:13:06,025 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 19:13:06,025 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 19:13:06,027 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 19:13:06,027 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:06,031 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:06,079 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 19:13:06,081 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 19:13:06,081 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 19:13:06,081 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 19:13:06,081 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-19 19:13:06,081 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 19:13:06,085 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-10-19 19:13:06,085 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:06,090 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 19:13:06,095 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 19:13:06,095 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:06,106 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 19:13:06,107 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 19:13:06,107 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 19:13:06,107 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~n~0 - 2*ULTIMATE.start_main_~j~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:06,146 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 19:13:06,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:13:06,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 19:13:06,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 19:13:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:13:06,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 19:13:06,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 19:13:06,232 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 19:13:06,232 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 19:13:06,232 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-10-19 19:13:06,244 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 12 states and 15 transitions. Complement of second has 4 states. [2020-10-19 19:13:06,245 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 19:13:06,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 19:13:06,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-19 19:13:06,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 3 letters. [2020-10-19 19:13:06,247 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 19:13:06,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2020-10-19 19:13:06,247 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 19:13:06,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 6 letters. [2020-10-19 19:13:06,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 19:13:06,248 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 15 transitions. [2020-10-19 19:13:06,249 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 19:13:06,249 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 0 states and 0 transitions. [2020-10-19 19:13:06,249 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 19:13:06,249 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 19:13:06,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 19:13:06,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 19:13:06,250 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 19:13:06,250 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 19:13:06,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 19:13:06,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 19:13:06,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 19:13:06,255 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2020-10-19 19:13:06,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 19:13:06,258 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-10-19 19:13:06,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 19:13:06,259 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-10-19 19:13:06,259 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 19:13:06,259 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 19:13:06,259 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 19:13:06,259 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 19:13:06,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 19:13:06,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 19:13:06,260 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 19:13:06,260 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 19:13:06,260 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 19:13:06,260 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-19 19:13:06,260 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-19 19:13:06,261 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 19:13:06,261 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-19 19:13:06,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 07:13:06 BoogieIcfgContainer [2020-10-19 19:13:06,269 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 19:13:06,270 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 19:13:06,270 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 19:13:06,270 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 19:13:06,271 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:13:03" (3/4) ... [2020-10-19 19:13:06,276 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 19:13:06,276 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 19:13:06,279 INFO L168 Benchmark]: Toolchain (without parser) took 3729.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 960.0 MB in the beginning and 840.1 MB in the end (delta: 119.8 MB). Peak memory consumption was 256.2 MB. Max. memory is 11.5 GB. [2020-10-19 19:13:06,280 INFO L168 Benchmark]: CDTParser took 0.28 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 19:13:06,281 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.20 ms. Allocated memory is still 1.0 GB. Free memory was 960.0 MB in the beginning and 949.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 19:13:06,282 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -183.1 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2020-10-19 19:13:06,283 INFO L168 Benchmark]: Boogie Preprocessor took 22.12 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 19:13:06,284 INFO L168 Benchmark]: RCFGBuilder took 293.87 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2020-10-19 19:13:06,285 INFO L168 Benchmark]: BuchiAutomizer took 3047.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 840.1 MB in the end (delta: 265.4 MB). Peak memory consumption was 265.4 MB. Max. memory is 11.5 GB. [2020-10-19 19:13:06,285 INFO L168 Benchmark]: Witness Printer took 6.35 ms. Allocated memory is still 1.2 GB. Free memory is still 840.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 19:13:06,290 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 254.20 ms. Allocated memory is still 1.0 GB. Free memory was 960.0 MB in the beginning and 949.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 94.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -183.1 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.12 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 293.87 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3047.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 840.1 MB in the end (delta: 265.4 MB). Peak memory consumption was 265.4 MB. Max. memory is 11.5 GB. * Witness Printer took 6.35 ms. Allocated memory is still 1.2 GB. Free memory is still 840.1 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One deterministic module has affine ranking function n + -2 * j and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 2.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 9 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 21 SDtfs, 22 SDslu, 9 SDs, 0 SdLazy, 10 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital29 mio100 ax100 hnf100 lsp79 ukn92 mio100 lsp100 div197 bol100 ite100 ukn100 eq142 hnf73 smp89 dnf131 smp93 tf107 neg99 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 39ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...