./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-lit/cggmp2005b.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-lit/cggmp2005b.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 fef737e6ce8f4d154b70d44967f8d8c87159a2fe .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 07:06:30,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 07:06:30,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 07:06:30,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 07:06:30,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 07:06:30,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 07:06:30,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 07:06:30,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 07:06:30,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 07:06:31,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 07:06:31,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 07:06:31,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 07:06:31,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 07:06:31,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 07:06:31,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 07:06:31,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 07:06:31,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 07:06:31,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 07:06:31,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 07:06:31,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 07:06:31,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 07:06:31,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 07:06:31,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 07:06:31,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 07:06:31,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 07:06:31,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 07:06:31,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 07:06:31,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 07:06:31,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 07:06:31,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 07:06:31,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 07:06:31,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 07:06:31,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 07:06:31,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 07:06:31,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 07:06:31,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 07:06:31,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 07:06:31,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 07:06:31,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 07:06:31,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 07:06:31,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 07:06:31,076 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-20 07:06:31,119 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 07:06:31,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 07:06:31,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 07:06:31,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 07:06:31,123 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 07:06:31,124 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 07:06:31,124 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 07:06:31,124 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 07:06:31,124 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 07:06:31,124 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 07:06:31,125 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 07:06:31,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 07:06:31,126 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 07:06:31,126 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 07:06:31,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 07:06:31,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 07:06:31,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 07:06:31,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 07:06:31,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 07:06:31,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 07:06:31,128 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 07:06:31,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 07:06:31,128 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 07:06:31,128 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 07:06:31,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 07:06:31,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 07:06:31,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 07:06:31,129 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 07:06:31,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 07:06:31,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 07:06:31,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 07:06:31,130 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 07:06:31,131 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 07:06:31,131 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 -> fef737e6ce8f4d154b70d44967f8d8c87159a2fe [2020-10-20 07:06:31,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 07:06:31,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 07:06:31,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 07:06:31,411 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 07:06:31,412 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 07:06:31,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/cggmp2005b.i [2020-10-20 07:06:31,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9089ff5aa/39cabe0db46446c985750112c58f8db3/FLAG1009ce58a [2020-10-20 07:06:32,014 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 07:06:32,015 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/cggmp2005b.i [2020-10-20 07:06:32,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9089ff5aa/39cabe0db46446c985750112c58f8db3/FLAG1009ce58a [2020-10-20 07:06:32,393 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9089ff5aa/39cabe0db46446c985750112c58f8db3 [2020-10-20 07:06:32,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 07:06:32,405 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 07:06:32,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 07:06:32,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 07:06:32,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 07:06:32,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 07:06:32" (1/1) ... [2020-10-20 07:06:32,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4337c38f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:32, skipping insertion in model container [2020-10-20 07:06:32,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 07:06:32" (1/1) ... [2020-10-20 07:06:32,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 07:06:32,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 07:06:32,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 07:06:32,674 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 07:06:32,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 07:06:32,708 INFO L208 MainTranslator]: Completed translation [2020-10-20 07:06:32,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:32 WrapperNode [2020-10-20 07:06:32,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 07:06:32,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 07:06:32,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 07:06:32,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 07:06:32,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:32" (1/1) ... [2020-10-20 07:06:32,728 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:32" (1/1) ... [2020-10-20 07:06:32,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 07:06:32,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 07:06:32,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 07:06:32,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 07:06:32,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:32" (1/1) ... [2020-10-20 07:06:32,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:32" (1/1) ... [2020-10-20 07:06:32,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:32" (1/1) ... [2020-10-20 07:06:32,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:32" (1/1) ... [2020-10-20 07:06:32,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:32" (1/1) ... [2020-10-20 07:06:32,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:32" (1/1) ... [2020-10-20 07:06:32,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:32" (1/1) ... [2020-10-20 07:06:32,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 07:06:32,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 07:06:32,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 07:06:32,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 07:06:32,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:32" (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 07:06:32,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 07:06:32,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 07:06:32,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 07:06:32,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 07:06:33,053 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 07:06:33,053 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-20 07:06:33,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:06:33 BoogieIcfgContainer [2020-10-20 07:06:33,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 07:06:33,056 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 07:06:33,056 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 07:06:33,059 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 07:06:33,060 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:06:33,060 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 07:06:32" (1/3) ... [2020-10-20 07:06:33,061 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5cb17f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 07:06:33, skipping insertion in model container [2020-10-20 07:06:33,062 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:06:33,062 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:32" (2/3) ... [2020-10-20 07:06:33,062 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5cb17f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 07:06:33, skipping insertion in model container [2020-10-20 07:06:33,062 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:06:33,062 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:06:33" (3/3) ... [2020-10-20 07:06:33,064 INFO L373 chiAutomizerObserver]: Analyzing ICFG cggmp2005b.i [2020-10-20 07:06:33,110 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 07:06:33,110 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 07:06:33,110 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 07:06:33,110 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 07:06:33,110 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 07:06:33,111 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 07:06:33,111 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 07:06:33,111 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 07:06:33,124 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-10-20 07:06:33,142 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 07:06:33,143 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:06:33,143 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:06:33,149 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 07:06:33,149 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 07:06:33,149 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 07:06:33,149 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-10-20 07:06:33,151 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 07:06:33,151 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:06:33,151 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:06:33,152 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 07:06:33,152 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 07:06:33,160 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 10#L-1true havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;main_~i~0 := 0;main_~k~0 := 9;main_~j~0 := -100; 13#L35-3true [2020-10-20 07:06:33,160 INFO L796 eck$LassoCheckResult]: Loop: 13#L35-3true assume !!(main_~i~0 <= 100);main_~i~0 := 1 + main_~i~0; 7#L31-2true assume !(main_~j~0 < 20); 5#L31-3true main_~k~0 := 4; 14#L35-2true assume !true; 13#L35-3true [2020-10-20 07:06:33,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:33,166 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2020-10-20 07:06:33,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:33,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343849482] [2020-10-20 07:06:33,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:33,272 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:33,286 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:33,306 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:33,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:33,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1269299, now seen corresponding path program 1 times [2020-10-20 07:06:33,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:33,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144658216] [2020-10-20 07:06:33,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:33,342 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 07:06:33,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144658216] [2020-10-20 07:06:33,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 07:06:33,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 07:06:33,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743118285] [2020-10-20 07:06:33,350 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-20 07:06:33,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 07:06:33,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 07:06:33,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 07:06:33,367 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-10-20 07:06:33,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 07:06:33,373 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2020-10-20 07:06:33,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 07:06:33,375 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 16 transitions. [2020-10-20 07:06:33,376 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 07:06:33,380 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 6 states and 8 transitions. [2020-10-20 07:06:33,381 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-10-20 07:06:33,382 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-10-20 07:06:33,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 8 transitions. [2020-10-20 07:06:33,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 07:06:33,383 INFO L691 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-10-20 07:06:33,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 8 transitions. [2020-10-20 07:06:33,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2020-10-20 07:06:33,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-20 07:06:33,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2020-10-20 07:06:33,405 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-10-20 07:06:33,405 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-10-20 07:06:33,405 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 07:06:33,405 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2020-10-20 07:06:33,406 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 07:06:33,406 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:06:33,406 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:06:33,406 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 07:06:33,407 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 07:06:33,407 INFO L794 eck$LassoCheckResult]: Stem: 39#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); 37#L-1 havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;main_~i~0 := 0;main_~k~0 := 9;main_~j~0 := -100; 38#L35-3 [2020-10-20 07:06:33,407 INFO L796 eck$LassoCheckResult]: Loop: 38#L35-3 assume !!(main_~i~0 <= 100);main_~i~0 := 1 + main_~i~0; 40#L31-2 assume !(main_~j~0 < 20); 42#L31-3 main_~k~0 := 4; 41#L35-2 assume !(main_~k~0 <= 3); 38#L35-3 [2020-10-20 07:06:33,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:33,407 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2020-10-20 07:06:33,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:33,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506761646] [2020-10-20 07:06:33,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:33,420 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:33,430 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:33,434 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:33,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:33,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1269295, now seen corresponding path program 1 times [2020-10-20 07:06:33,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:33,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615036135] [2020-10-20 07:06:33,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:33,458 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:33,461 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:33,464 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:33,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:33,464 INFO L82 PathProgramCache]: Analyzing trace with hash 889696497, now seen corresponding path program 1 times [2020-10-20 07:06:33,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:33,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970793704] [2020-10-20 07:06:33,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:33,513 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 07:06:33,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970793704] [2020-10-20 07:06:33,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 07:06:33,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 07:06:33,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465495173] [2020-10-20 07:06:33,575 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:33,576 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:33,576 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:33,576 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:33,576 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 07:06:33,576 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:33,577 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:33,577 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:33,577 INFO L133 ssoRankerPreferences]: Filename of dumped script: cggmp2005b.i_Iteration2_Loop [2020-10-20 07:06:33,577 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:33,577 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:33,609 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 07:06:33,635 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 07:06:33,649 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 07:06:33,736 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:33,736 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 [2020-10-20 07:06:33,766 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:06:33,766 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:06:33,783 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:06:33,784 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=20} Honda state: {ULTIMATE.start_main_~j~0=20} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:33,811 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:06:33,811 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 [2020-10-20 07:06:33,848 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 07:06:33,848 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:06:33,882 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 07:06:33,884 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:33,884 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:33,884 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:33,884 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:33,884 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 07:06:33,884 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:33,885 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:33,885 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:33,885 INFO L133 ssoRankerPreferences]: Filename of dumped script: cggmp2005b.i_Iteration2_Loop [2020-10-20 07:06:33,885 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:33,885 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:33,888 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 07:06:33,895 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 07:06:33,904 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 07:06:33,949 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:33,955 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:06:33,964 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 07:06:33,967 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:33,967 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:06:33,968 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:33,968 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:33,968 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:33,971 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:06:33,971 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:33,977 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:34,010 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 07:06:34,012 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:34,012 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:06:34,012 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:34,012 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:34,013 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:34,014 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:06:34,014 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:06:34,017 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 07:06:34,025 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 07:06:34,025 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:06:34,040 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 07:06:34,040 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 07:06:34,051 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 07:06:34,052 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 201 Supporting invariants [] Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:34,092 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 07:06:34,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:34,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 07:06:34,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:34,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 07:06:34,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:34,228 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 07:06:34,234 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 [2020-10-20 07:06:34,235 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-10-20 07:06:34,282 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 14 states and 21 transitions. Complement of second has 4 states. [2020-10-20 07:06:34,283 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 [2020-10-20 07:06:34,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 07:06:34,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-10-20 07:06:34,286 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 2 letters. Loop has 4 letters. [2020-10-20 07:06:34,288 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:34,288 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2020-10-20 07:06:34,289 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:34,289 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 2 letters. Loop has 8 letters. [2020-10-20 07:06:34,290 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:34,290 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 21 transitions. [2020-10-20 07:06:34,293 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-10-20 07:06:34,294 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 13 states and 20 transitions. [2020-10-20 07:06:34,294 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-10-20 07:06:34,294 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-10-20 07:06:34,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 20 transitions. [2020-10-20 07:06:34,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 07:06:34,295 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2020-10-20 07:06:34,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 20 transitions. [2020-10-20 07:06:34,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2020-10-20 07:06:34,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-20 07:06:34,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 17 transitions. [2020-10-20 07:06:34,300 INFO L714 BuchiCegarLoop]: Abstraction has 11 states and 17 transitions. [2020-10-20 07:06:34,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 07:06:34,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 07:06:34,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 07:06:34,304 INFO L87 Difference]: Start difference. First operand 11 states and 17 transitions. Second operand 3 states. [2020-10-20 07:06:34,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 07:06:34,314 INFO L93 Difference]: Finished difference Result 12 states and 19 transitions. [2020-10-20 07:06:34,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 07:06:34,317 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 19 transitions. [2020-10-20 07:06:34,318 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-10-20 07:06:34,318 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 19 transitions. [2020-10-20 07:06:34,318 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-10-20 07:06:34,319 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-10-20 07:06:34,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 19 transitions. [2020-10-20 07:06:34,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 07:06:34,323 INFO L691 BuchiCegarLoop]: Abstraction has 12 states and 19 transitions. [2020-10-20 07:06:34,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 19 transitions. [2020-10-20 07:06:34,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-20 07:06:34,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-20 07:06:34,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 19 transitions. [2020-10-20 07:06:34,326 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 19 transitions. [2020-10-20 07:06:34,326 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 19 transitions. [2020-10-20 07:06:34,326 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 07:06:34,328 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 19 transitions. [2020-10-20 07:06:34,329 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-10-20 07:06:34,330 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:06:34,330 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:06:34,330 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 07:06:34,331 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-20 07:06:34,331 INFO L794 eck$LassoCheckResult]: Stem: 124#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); 119#L-1 havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;main_~i~0 := 0;main_~k~0 := 9;main_~j~0 := -100; 120#L35-3 assume !!(main_~i~0 <= 100);main_~i~0 := 1 + main_~i~0; 121#L31-2 assume !!(main_~j~0 < 20);main_~j~0 := main_~i~0 + main_~j~0; 129#L31-2 [2020-10-20 07:06:34,331 INFO L796 eck$LassoCheckResult]: Loop: 129#L31-2 assume !!(main_~j~0 < 20);main_~j~0 := main_~i~0 + main_~j~0; 129#L31-2 [2020-10-20 07:06:34,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:34,332 INFO L82 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2020-10-20 07:06:34,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:34,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76847804] [2020-10-20 07:06:34,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:34,366 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:34,388 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:34,393 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:34,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:34,394 INFO L82 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2020-10-20 07:06:34,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:34,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479905995] [2020-10-20 07:06:34,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:34,405 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:34,443 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:34,445 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:34,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:34,452 INFO L82 PathProgramCache]: Analyzing trace with hash 28699944, now seen corresponding path program 2 times [2020-10-20 07:06:34,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:34,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030062194] [2020-10-20 07:06:34,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:34,470 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:34,480 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:34,484 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:34,658 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-10-20 07:06:34,717 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:34,717 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:34,717 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:34,717 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:34,718 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 07:06:34,718 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:34,718 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:34,718 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:34,718 INFO L133 ssoRankerPreferences]: Filename of dumped script: cggmp2005b.i_Iteration3_Lasso [2020-10-20 07:06:34,718 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:34,719 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:34,722 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 07:06:34,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:34,785 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 07:06:34,789 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 07:06:34,793 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 07:06:34,796 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 07:06:34,817 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 07:06:35,016 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:35,016 INFO L489 LassoAnalysis]: Using template 'affine'. 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 07:06:35,028 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 07:06:35,030 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:35,031 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:35,031 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:35,031 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:35,036 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 07:06:35,036 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:35,044 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) [2020-10-20 07:06:35,096 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 07:06:35,098 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:35,099 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:35,099 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:35,099 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:35,102 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 07:06:35,103 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:35,108 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:06:35,160 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 07:06:35,162 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:35,163 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:35,163 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:35,163 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:35,166 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 07:06:35,166 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:35,171 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:06:35,215 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 07:06:35,217 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:35,217 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:35,218 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:35,218 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:35,220 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 07:06:35,220 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:35,225 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:06:35,268 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:35,270 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:35,270 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:35,270 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:35,270 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:35,273 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 07:06:35,273 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 07:06:35,277 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:06:35,325 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 07:06:35,327 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:35,328 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:35,328 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:35,328 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:35,330 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 07:06:35,330 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:35,334 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 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 [2020-10-20 07:06:35,375 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 07:06:35,377 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:35,377 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:35,377 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:35,377 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:35,380 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 07:06:35,380 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 07:06:35,385 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) [2020-10-20 07:06:35,423 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 07:06:35,425 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:35,425 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:35,425 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:35,425 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:35,428 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 07:06:35,428 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 07:06:35,442 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:35,476 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 07:06:35,478 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:35,478 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:35,478 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:35,478 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:35,480 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 07:06:35,481 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 07:06:35,485 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) [2020-10-20 07:06:35,526 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 07:06:35,528 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:35,528 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:06:35,529 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:35,529 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:35,529 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:35,530 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:06:35,530 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 [2020-10-20 07:06:35,532 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 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:35,570 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 07:06:35,571 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:35,572 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:35,572 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:35,572 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:35,575 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 07:06:35,575 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 07:06:35,579 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 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:35,615 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 07:06:35,617 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:35,617 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:35,617 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:35,617 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:35,619 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 07:06:35,620 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 07:06:35,624 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 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:35,667 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 07:06:35,668 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:35,669 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:35,669 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:35,669 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:35,671 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 07:06:35,671 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 07:06:35,675 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:06:35,732 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 07:06:35,735 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:35,735 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:35,735 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:35,735 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:35,739 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 07:06:35,740 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:35,750 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 07:06:35,770 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2020-10-20 07:06:35,770 INFO L444 ModelExtractionUtils]: 1 out of 10 variables were initially zero. Simplification set additionally 4 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:06:35,783 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:35,787 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-10-20 07:06:35,787 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 07:06:35,788 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 39 Supporting invariants [1*ULTIMATE.start_main_~i~0 - 1 >= 0] [2020-10-20 07:06:35,843 INFO L297 tatePredicateManager]: 4 out of 5 supporting invariants were superfluous and have been removed [2020-10-20 07:06:35,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:35,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 07:06:35,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:35,936 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 07:06:35,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:35,937 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 07:06:35,938 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 1 loop predicates [2020-10-20 07:06:35,938 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 19 transitions. cyclomatic complexity: 10 Second operand 4 states. [2020-10-20 07:06:35,995 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 19 transitions. cyclomatic complexity: 10. Second operand 4 states. Result 21 states and 34 transitions. Complement of second has 6 states. [2020-10-20 07:06:35,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 07:06:35,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 07:06:35,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2020-10-20 07:06:35,997 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 1 letters. [2020-10-20 07:06:35,997 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:35,997 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 5 letters. Loop has 1 letters. [2020-10-20 07:06:35,997 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:35,997 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-20 07:06:35,997 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:35,997 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 34 transitions. [2020-10-20 07:06:35,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-20 07:06:36,000 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 18 states and 28 transitions. [2020-10-20 07:06:36,000 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-10-20 07:06:36,001 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-10-20 07:06:36,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 28 transitions. [2020-10-20 07:06:36,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 07:06:36,001 INFO L691 BuchiCegarLoop]: Abstraction has 18 states and 28 transitions. [2020-10-20 07:06:36,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 28 transitions. [2020-10-20 07:06:36,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-10-20 07:06:36,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-20 07:06:36,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 27 transitions. [2020-10-20 07:06:36,004 INFO L714 BuchiCegarLoop]: Abstraction has 17 states and 27 transitions. [2020-10-20 07:06:36,005 INFO L594 BuchiCegarLoop]: Abstraction has 17 states and 27 transitions. [2020-10-20 07:06:36,005 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 07:06:36,005 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 27 transitions. [2020-10-20 07:06:36,006 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-20 07:06:36,006 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:06:36,006 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:06:36,007 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-10-20 07:06:36,007 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-20 07:06:36,007 INFO L794 eck$LassoCheckResult]: Stem: 221#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); 216#L-1 havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;main_~i~0 := 0;main_~k~0 := 9;main_~j~0 := -100; 217#L35-3 assume !!(main_~i~0 <= 100);main_~i~0 := 1 + main_~i~0; 218#L31-2 assume !!(main_~j~0 < 20);main_~j~0 := main_~i~0 + main_~j~0; 227#L31-2 assume !(main_~j~0 < 20); 224#L31-3 main_~k~0 := 4; 222#L35-2 [2020-10-20 07:06:36,007 INFO L796 eck$LassoCheckResult]: Loop: 222#L35-2 assume !!(main_~k~0 <= 3);main_~k~0 := 1 + main_~k~0; 222#L35-2 [2020-10-20 07:06:36,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:36,008 INFO L82 PathProgramCache]: Analyzing trace with hash 889698226, now seen corresponding path program 1 times [2020-10-20 07:06:36,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:36,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299392730] [2020-10-20 07:06:36,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:36,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 07:06:36,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299392730] [2020-10-20 07:06:36,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160013771] [2020-10-20 07:06:36,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 07:06:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:36,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 07:06:36,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:36,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 07:06:36,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 07:06:36,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-20 07:06:36,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984835425] [2020-10-20 07:06:36,116 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 07:06:36,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:36,116 INFO L82 PathProgramCache]: Analyzing trace with hash 64, now seen corresponding path program 1 times [2020-10-20 07:06:36,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:36,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140646741] [2020-10-20 07:06:36,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:36,120 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:36,122 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:36,123 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:36,132 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:36,133 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:36,133 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:36,133 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:36,133 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 07:06:36,133 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:36,134 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:36,134 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:36,134 INFO L133 ssoRankerPreferences]: Filename of dumped script: cggmp2005b.i_Iteration4_Loop [2020-10-20 07:06:36,134 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:36,134 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:36,135 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 07:06:36,177 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:36,177 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:06:36,183 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:06:36,183 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 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 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:36,211 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 07:06:36,211 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:06:36,237 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 07:06:36,239 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:36,239 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:36,239 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:36,239 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:36,239 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 07:06:36,240 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:36,240 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:36,240 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:36,240 INFO L133 ssoRankerPreferences]: Filename of dumped script: cggmp2005b.i_Iteration4_Loop [2020-10-20 07:06:36,240 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:36,241 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:36,242 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 07:06:36,262 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:36,262 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:06:36,265 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 07:06:36,267 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:36,268 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:06:36,268 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:36,268 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:36,268 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:36,269 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:06:36,270 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:36,272 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 07:06:36,275 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 07:06:36,275 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:36,279 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 07:06:36,279 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 07:06:36,279 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 07:06:36,279 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0) = -2*ULTIMATE.start_main_~k~0 + 7 Supporting invariants [] [2020-10-20 07:06:36,301 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 07:06:36,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:36,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 07:06:36,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:36,343 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 07:06:36,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:36,343 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 07:06:36,344 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 [2020-10-20 07:06:36,344 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 27 transitions. cyclomatic complexity: 14 Second operand 2 states. [2020-10-20 07:06:36,358 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 27 transitions. cyclomatic complexity: 14. Second operand 2 states. Result 48 states and 76 transitions. Complement of second has 5 states. [2020-10-20 07:06:36,359 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 [2020-10-20 07:06:36,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-20 07:06:36,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-10-20 07:06:36,360 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 1 letters. [2020-10-20 07:06:36,360 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:36,360 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 7 letters. Loop has 1 letters. [2020-10-20 07:06:36,360 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:36,360 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2020-10-20 07:06:36,360 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:36,361 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 76 transitions. [2020-10-20 07:06:36,363 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-20 07:06:36,364 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 32 states and 52 transitions. [2020-10-20 07:06:36,364 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-10-20 07:06:36,364 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-10-20 07:06:36,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 52 transitions. [2020-10-20 07:06:36,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 07:06:36,365 INFO L691 BuchiCegarLoop]: Abstraction has 32 states and 52 transitions. [2020-10-20 07:06:36,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 52 transitions. [2020-10-20 07:06:36,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 17. [2020-10-20 07:06:36,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-20 07:06:36,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 26 transitions. [2020-10-20 07:06:36,367 INFO L714 BuchiCegarLoop]: Abstraction has 17 states and 26 transitions. [2020-10-20 07:06:36,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 07:06:36,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 07:06:36,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-10-20 07:06:36,368 INFO L87 Difference]: Start difference. First operand 17 states and 26 transitions. Second operand 7 states. [2020-10-20 07:06:36,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 07:06:36,395 INFO L93 Difference]: Finished difference Result 18 states and 27 transitions. [2020-10-20 07:06:36,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 07:06:36,396 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 27 transitions. [2020-10-20 07:06:36,397 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-20 07:06:36,398 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 27 transitions. [2020-10-20 07:06:36,398 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-10-20 07:06:36,399 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-10-20 07:06:36,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 27 transitions. [2020-10-20 07:06:36,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 07:06:36,399 INFO L691 BuchiCegarLoop]: Abstraction has 18 states and 27 transitions. [2020-10-20 07:06:36,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 27 transitions. [2020-10-20 07:06:36,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-20 07:06:36,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-20 07:06:36,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 27 transitions. [2020-10-20 07:06:36,402 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 27 transitions. [2020-10-20 07:06:36,402 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 27 transitions. [2020-10-20 07:06:36,402 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-20 07:06:36,402 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 27 transitions. [2020-10-20 07:06:36,403 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-20 07:06:36,403 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:06:36,403 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:06:36,404 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1] [2020-10-20 07:06:36,404 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-20 07:06:36,404 INFO L794 eck$LassoCheckResult]: Stem: 377#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 375#L-1 havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;main_~i~0 := 0;main_~k~0 := 9;main_~j~0 := -100; 376#L35-3 assume !!(main_~i~0 <= 100);main_~i~0 := 1 + main_~i~0; 378#L31-2 assume !!(main_~j~0 < 20);main_~j~0 := main_~i~0 + main_~j~0; 387#L31-2 assume !!(main_~j~0 < 20);main_~j~0 := main_~i~0 + main_~j~0; 390#L31-2 assume !(main_~j~0 < 20); 384#L31-3 main_~k~0 := 4; 382#L35-2 assume !(main_~k~0 <= 3); 379#L35-3 assume !!(main_~i~0 <= 100);main_~i~0 := 1 + main_~i~0; 380#L31-2 assume !(main_~j~0 < 20); 383#L31-3 main_~k~0 := 4; 381#L35-2 [2020-10-20 07:06:36,404 INFO L796 eck$LassoCheckResult]: Loop: 381#L35-2 assume !!(main_~k~0 <= 3);main_~k~0 := 1 + main_~k~0; 381#L35-2 [2020-10-20 07:06:36,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:36,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1360977536, now seen corresponding path program 1 times [2020-10-20 07:06:36,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:36,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739719080] [2020-10-20 07:06:36,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:36,476 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 07:06:36,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739719080] [2020-10-20 07:06:36,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924451719] [2020-10-20 07:06:36,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 07:06:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:36,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 07:06:36,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:36,592 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 07:06:36,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 07:06:36,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-10-20 07:06:36,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236591452] [2020-10-20 07:06:36,593 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 07:06:36,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:36,593 INFO L82 PathProgramCache]: Analyzing trace with hash 64, now seen corresponding path program 2 times [2020-10-20 07:06:36,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:36,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800869204] [2020-10-20 07:06:36,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:36,597 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:36,599 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:36,600 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:36,610 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:36,610 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:36,610 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:36,610 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:36,610 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 07:06:36,610 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:36,610 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:36,610 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:36,611 INFO L133 ssoRankerPreferences]: Filename of dumped script: cggmp2005b.i_Iteration5_Loop [2020-10-20 07:06:36,611 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:36,611 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:36,611 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 07:06:36,630 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:36,630 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:06:36,636 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:06:36,636 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 29 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 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:36,661 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 07:06:36,661 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:06:36,687 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 07:06:36,689 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:36,689 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:36,689 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:36,689 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:36,689 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 07:06:36,689 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:36,689 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:36,689 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:36,690 INFO L133 ssoRankerPreferences]: Filename of dumped script: cggmp2005b.i_Iteration5_Loop [2020-10-20 07:06:36,690 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:36,690 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:36,690 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 07:06:36,721 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:36,722 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:36,724 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 07:06:36,726 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:36,726 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:06:36,726 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:36,726 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:36,726 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:36,727 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:06:36,727 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:06:36,729 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 07:06:36,741 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 07:06:36,742 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:36,744 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 07:06:36,744 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 07:06:36,744 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 07:06:36,744 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0) = -2*ULTIMATE.start_main_~k~0 + 7 Supporting invariants [] [2020-10-20 07:06:36,765 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 07:06:36,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:36,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 07:06:36,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:36,799 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 07:06:36,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:36,799 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 07:06:36,800 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 [2020-10-20 07:06:36,800 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13 Second operand 2 states. [2020-10-20 07:06:36,812 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 44 states and 69 transitions. Complement of second has 5 states. [2020-10-20 07:06:36,814 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 [2020-10-20 07:06:36,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-20 07:06:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-10-20 07:06:36,815 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 11 letters. Loop has 1 letters. [2020-10-20 07:06:36,815 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:36,816 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 07:06:36,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:36,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 07:06:36,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:36,848 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 07:06:36,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:36,848 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 07:06:36,849 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2020-10-20 07:06:36,849 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13 Second operand 2 states. [2020-10-20 07:06:36,864 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 44 states and 69 transitions. Complement of second has 5 states. [2020-10-20 07:06:36,864 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 [2020-10-20 07:06:36,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-20 07:06:36,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-10-20 07:06:36,865 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 11 letters. Loop has 1 letters. [2020-10-20 07:06:36,865 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:36,866 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 07:06:36,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:36,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 07:06:36,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:36,896 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 07:06:36,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:36,897 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 07:06:36,898 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-10-20 07:06:36,898 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13 Second operand 2 states. [2020-10-20 07:06:36,910 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 33 states and 49 transitions. Complement of second has 4 states. [2020-10-20 07:06:36,911 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 [2020-10-20 07:06:36,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-20 07:06:36,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2020-10-20 07:06:36,912 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 11 letters. Loop has 1 letters. [2020-10-20 07:06:36,912 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:36,912 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 12 letters. Loop has 1 letters. [2020-10-20 07:06:36,913 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:36,913 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 11 letters. Loop has 2 letters. [2020-10-20 07:06:36,914 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:36,914 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 49 transitions. [2020-10-20 07:06:36,915 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 07:06:36,915 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 0 states and 0 transitions. [2020-10-20 07:06:36,915 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 07:06:36,915 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 07:06:36,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 07:06:36,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 07:06:36,916 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 07:06:36,916 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 07:06:36,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 07:06:36,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 07:06:36,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-20 07:06:36,917 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 9 states. [2020-10-20 07:06:36,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 07:06:36,917 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-10-20 07:06:36,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 07:06:36,918 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-10-20 07:06:36,918 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 07:06:36,918 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 07:06:36,918 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 07:06:36,919 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 07:06:36,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 07:06:36,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 07:06:36,919 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 07:06:36,919 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 07:06:36,919 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 07:06:36,920 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-20 07:06:36,920 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 07:06:36,920 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 07:06:36,920 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 07:06:36,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 07:06:36 BoogieIcfgContainer [2020-10-20 07:06:36,928 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 07:06:36,929 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 07:06:36,929 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 07:06:36,929 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 07:06:36,930 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:06:33" (3/4) ... [2020-10-20 07:06:36,934 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 07:06:36,934 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 07:06:36,936 INFO L168 Benchmark]: Toolchain (without parser) took 4536.91 ms. Allocated memory was 40.4 MB in the beginning and 56.1 MB in the end (delta: 15.7 MB). Free memory was 18.3 MB in the beginning and 12.3 MB in the end (delta: 6.0 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:36,937 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 30.9 MB. Free memory was 17.1 MB in the beginning and 17.1 MB in the end (delta: 32.3 kB). Peak memory consumption was 32.3 kB. Max. memory is 14.3 GB. [2020-10-20 07:06:36,938 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.73 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 17.5 MB in the beginning and 18.2 MB in the end (delta: -699.8 kB). Peak memory consumption was 8.0 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:36,939 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.50 ms. Allocated memory is still 41.4 MB. Free memory was 18.2 MB in the beginning and 16.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:36,940 INFO L168 Benchmark]: Boogie Preprocessor took 28.18 ms. Allocated memory is still 41.4 MB. Free memory was 16.5 MB in the beginning and 15.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:36,941 INFO L168 Benchmark]: RCFGBuilder took 277.48 ms. Allocated memory was 41.4 MB in the beginning and 43.0 MB in the end (delta: 1.6 MB). Free memory was 15.2 MB in the beginning and 18.9 MB in the end (delta: -3.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:36,942 INFO L168 Benchmark]: BuchiAutomizer took 3871.97 ms. Allocated memory was 43.0 MB in the beginning and 56.1 MB in the end (delta: 13.1 MB). Free memory was 18.7 MB in the beginning and 12.8 MB in the end (delta: 5.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:36,943 INFO L168 Benchmark]: Witness Printer took 5.48 ms. Allocated memory is still 56.1 MB. Free memory was 12.8 MB in the beginning and 12.3 MB in the end (delta: 541.5 kB). Peak memory consumption was 541.5 kB. Max. memory is 14.3 GB. [2020-10-20 07:06:36,947 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 30.9 MB. Free memory was 17.1 MB in the beginning and 17.1 MB in the end (delta: 32.3 kB). Peak memory consumption was 32.3 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 300.73 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 17.5 MB in the beginning and 18.2 MB in the end (delta: -699.8 kB). Peak memory consumption was 8.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 39.50 ms. Allocated memory is still 41.4 MB. Free memory was 18.2 MB in the beginning and 16.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 28.18 ms. Allocated memory is still 41.4 MB. Free memory was 16.5 MB in the beginning and 15.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 277.48 ms. Allocated memory was 41.4 MB in the beginning and 43.0 MB in the end (delta: 1.6 MB). Free memory was 15.2 MB in the beginning and 18.9 MB in the end (delta: -3.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 3871.97 ms. Allocated memory was 43.0 MB in the beginning and 56.1 MB in the end (delta: 13.1 MB). Free memory was 18.7 MB in the beginning and 12.8 MB in the end (delta: 5.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 14.3 GB. * Witness Printer took 5.48 ms. Allocated memory is still 56.1 MB. Free memory was 12.8 MB in the beginning and 12.3 MB in the end (delta: 541.5 kB). Peak memory consumption was 541.5 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 8 terminating modules (4 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -2 * i + 201 and consists of 3 locations. One deterministic module has affine ranking function -2 * j + 39 and consists of 5 locations. One deterministic module has affine ranking function -2 * k + 7 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * k + 7 and consists of 3 locations. 4 modules have a trivial ranking function, the largest among these consists of 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.8s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 3.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 18 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 18 states and ocurred in iteration 4. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 82 SDtfs, 51 SDslu, 39 SDs, 0 SdLazy, 45 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc0 concLT1 SILN0 SILU0 SILI0 SILT2 lasso1 LassoPreprocessingBenchmarks: Lassos: inital24 mio100 ax100 hnf98 lsp85 ukn92 mio100 lsp93 div100 bol100 ite100 ukn100 eq164 hnf93 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 27ms VariablesStem: 3 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...