./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/invert_string-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/loops/invert_string-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4335483d0b28de4d854f33f949d3555a767d1bde ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 03:16:28,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 03:16:28,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 03:16:28,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 03:16:28,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 03:16:28,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 03:16:28,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 03:16:28,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 03:16:28,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 03:16:28,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 03:16:28,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 03:16:28,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 03:16:28,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 03:16:28,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 03:16:28,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 03:16:28,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 03:16:28,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 03:16:28,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 03:16:28,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 03:16:28,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 03:16:28,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 03:16:28,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 03:16:28,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 03:16:28,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 03:16:28,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 03:16:28,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 03:16:28,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 03:16:28,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 03:16:28,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 03:16:28,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 03:16:28,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 03:16:28,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 03:16:28,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 03:16:28,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 03:16:28,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 03:16:28,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 03:16:28,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 03:16:28,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 03:16:28,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 03:16:28,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 03:16:28,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 03:16:28,822 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-28 03:16:28,846 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 03:16:28,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 03:16:28,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 03:16:28,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 03:16:28,849 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 03:16:28,849 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 03:16:28,850 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 03:16:28,850 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 03:16:28,850 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 03:16:28,850 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 03:16:28,851 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 03:16:28,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 03:16:28,852 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 03:16:28,852 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 03:16:28,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 03:16:28,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 03:16:28,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 03:16:28,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 03:16:28,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 03:16:28,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 03:16:28,854 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 03:16:28,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 03:16:28,854 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 03:16:28,854 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 03:16:28,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 03:16:28,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 03:16:28,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 03:16:28,855 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 03:16:28,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 03:16:28,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 03:16:28,856 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 03:16:28,858 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 03:16:28,859 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 -> 4335483d0b28de4d854f33f949d3555a767d1bde [2019-11-28 03:16:29,188 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 03:16:29,202 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 03:16:29,207 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 03:16:29,208 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 03:16:29,209 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 03:16:29,210 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/invert_string-1.c [2019-11-28 03:16:29,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a84760394/f2a95fbd6a504a308ee3c969f19e569c/FLAG660370ce0 [2019-11-28 03:16:29,681 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 03:16:29,682 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/invert_string-1.c [2019-11-28 03:16:29,689 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a84760394/f2a95fbd6a504a308ee3c969f19e569c/FLAG660370ce0 [2019-11-28 03:16:30,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a84760394/f2a95fbd6a504a308ee3c969f19e569c [2019-11-28 03:16:30,095 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 03:16:30,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 03:16:30,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 03:16:30,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 03:16:30,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 03:16:30,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:30" (1/1) ... [2019-11-28 03:16:30,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c1ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:30, skipping insertion in model container [2019-11-28 03:16:30,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:30" (1/1) ... [2019-11-28 03:16:30,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 03:16:30,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 03:16:30,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 03:16:30,323 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 03:16:30,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 03:16:30,360 INFO L208 MainTranslator]: Completed translation [2019-11-28 03:16:30,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:30 WrapperNode [2019-11-28 03:16:30,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 03:16:30,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 03:16:30,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 03:16:30,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 03:16:30,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:30" (1/1) ... [2019-11-28 03:16:30,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:30" (1/1) ... [2019-11-28 03:16:30,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 03:16:30,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 03:16:30,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 03:16:30,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 03:16:30,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:30" (1/1) ... [2019-11-28 03:16:30,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:30" (1/1) ... [2019-11-28 03:16:30,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:30" (1/1) ... [2019-11-28 03:16:30,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:30" (1/1) ... [2019-11-28 03:16:30,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:30" (1/1) ... [2019-11-28 03:16:30,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:30" (1/1) ... [2019-11-28 03:16:30,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:30" (1/1) ... [2019-11-28 03:16:30,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 03:16:30,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 03:16:30,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 03:16:30,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 03:16:30,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:30" (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 [2019-11-28 03:16:30,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 03:16:30,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 03:16:30,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 03:16:30,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 03:16:30,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 03:16:30,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 03:16:30,871 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 03:16:30,872 INFO L297 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-28 03:16:30,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:30 BoogieIcfgContainer [2019-11-28 03:16:30,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 03:16:30,874 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 03:16:30,874 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 03:16:30,878 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 03:16:30,880 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 03:16:30,880 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:16:30" (1/3) ... [2019-11-28 03:16:30,881 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@44bfb852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:16:30, skipping insertion in model container [2019-11-28 03:16:30,881 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 03:16:30,882 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:30" (2/3) ... [2019-11-28 03:16:30,882 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@44bfb852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:16:30, skipping insertion in model container [2019-11-28 03:16:30,882 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 03:16:30,883 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:30" (3/3) ... [2019-11-28 03:16:30,885 INFO L371 chiAutomizerObserver]: Analyzing ICFG invert_string-1.c [2019-11-28 03:16:30,928 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 03:16:30,929 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 03:16:30,929 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 03:16:30,929 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 03:16:30,929 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 03:16:30,929 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 03:16:30,929 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 03:16:30,929 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 03:16:30,941 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-11-28 03:16:30,961 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-28 03:16:30,962 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:16:30,962 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:16:30,968 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 03:16:30,968 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 03:16:30,968 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 03:16:30,968 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-11-28 03:16:30,970 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-28 03:16:30,970 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:16:30,970 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:16:30,970 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 03:16:30,971 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 03:16:30,977 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 10#L-1true havoc main_#res;havoc main_#t~nondet1, main_#t~nondet3, main_#t~post2, main_#t~mem5, main_#t~post6, main_#t~post4, main_#t~mem8, main_#t~mem9, main_#t~post10, main_#t~post7, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet1 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet1 % 4294967296 % 4294967296 else main_#t~nondet1 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet1;assume 0 != (if main_~MAX~0 > 0 then 1 else 0);call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 6#L20-3true [2019-11-28 03:16:30,977 INFO L796 eck$LassoCheckResult]: Loop: 6#L20-3true assume !!(main_~i~0 < main_~MAX~0);call write~int(main_#t~nondet3, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet3; 7#L20-2true main_#t~post2 := main_~i~0;main_~i~0 := 1 + main_#t~post2;havoc main_#t~post2; 6#L20-3true [2019-11-28 03:16:30,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:16:30,982 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2019-11-28 03:16:30,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:16:30,991 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899561111] [2019-11-28 03:16:30,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:16:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:16:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:16:31,138 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:16:31,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:16:31,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2019-11-28 03:16:31,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:16:31,141 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966789973] [2019-11-28 03:16:31,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:16:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:16:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:16:31,158 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:16:31,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:16:31,160 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2019-11-28 03:16:31,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:16:31,161 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585580484] [2019-11-28 03:16:31,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:16:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:16:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:16:31,261 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:16:31,507 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-11-28 03:16:31,701 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2019-11-28 03:16:31,715 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:16:31,716 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:16:31,716 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:16:31,716 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:16:31,716 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 03:16:31,717 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:16:31,717 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:16:31,717 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:16:31,717 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-1.c_Iteration1_Lasso [2019-11-28 03:16:31,717 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:16:31,718 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:16:31,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:31,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:31,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:31,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:31,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:31,769 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:31,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:31,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:31,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:31,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:31,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:31,894 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:31,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:31,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:31,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:31,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:32,240 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:16:32,246 INFO L489 LassoAnalysis]: Using template 'affine'. 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 [2019-11-28 03:16:32,254 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 [2019-11-28 03:16:32,257 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:16:32,258 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:16:32,258 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:16:32,259 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:16:32,259 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:16:32,261 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:16:32,262 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 03:16:32,273 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 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 [2019-11-28 03:16:32,287 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 [2019-11-28 03:16:32,290 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:16:32,290 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:16:32,290 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:16:32,290 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:16:32,291 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:16:32,293 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:16:32,293 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 03:16:32,297 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 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 [2019-11-28 03:16:32,320 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 [2019-11-28 03:16:32,323 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:16:32,323 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:16:32,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:16:32,323 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:16:32,327 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 03:16:32,327 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 03:16:32,332 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:16:32,343 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 [2019-11-28 03:16:32,344 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:16:32,345 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:16:32,345 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:16:32,345 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:16:32,345 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:16:32,346 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:16:32,346 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 [2019-11-28 03:16:32,349 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 [2019-11-28 03:16:32,361 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 [2019-11-28 03:16:32,363 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:16:32,363 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:16:32,363 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:16:32,364 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:16:32,364 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:16:32,365 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:16:32,365 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 03:16:32,367 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:16:32,379 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 [2019-11-28 03:16:32,380 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:16:32,381 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:16:32,381 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:16:32,381 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:16:32,381 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:16:32,382 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:16:32,383 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 03:16:32,385 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:16:32,401 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 [2019-11-28 03:16:32,403 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:16:32,403 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:16:32,403 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:16:32,403 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:16:32,406 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 03:16:32,407 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 03:16:32,411 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) [2019-11-28 03:16:32,427 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 [2019-11-28 03:16:32,429 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:16:32,429 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:16:32,430 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:16:32,430 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:16:32,430 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:16:32,431 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:16:32,431 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:16:32,433 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) [2019-11-28 03:16:32,441 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:16:32,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:16:32,444 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:16:32,444 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:16:32,444 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:16:32,444 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:16:32,446 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:16:32,446 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 03:16:32,448 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) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:16:32,465 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 [2019-11-28 03:16:32,467 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:16:32,468 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:16:32,468 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:16:32,468 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:16:32,475 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 03:16:32,475 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 03:16:32,480 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) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:16:32,495 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 [2019-11-28 03:16:32,496 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:16:32,497 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:16:32,497 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:16:32,497 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:16:32,507 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 03:16:32,507 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 03:16:32,513 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:16:32,525 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 [2019-11-28 03:16:32,527 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:16:32,527 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:16:32,528 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:16:32,530 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:16:32,530 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:16:32,531 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:16:32,531 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 03:16:32,536 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 [2019-11-28 03:16:32,545 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 [2019-11-28 03:16:32,547 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:16:32,547 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:16:32,547 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:16:32,547 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:16:32,559 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 03:16:32,560 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 03:16:32,575 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 03:16:32,607 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-11-28 03:16:32,607 INFO L444 ModelExtractionUtils]: 5 out of 19 variables were initially zero. Simplification set additionally 11 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:16:32,622 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 03:16:32,626 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-28 03:16:32,626 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 03:16:32,627 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~MAX~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~MAX~0 Supporting invariants [] [2019-11-28 03:16:32,643 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-11-28 03:16:32,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:16:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:16:32,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 03:16:32,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:16:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:16:32,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 03:16:32,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:16:32,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:16:32,755 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 [2019-11-28 03:16:32,757 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 3 states. [2019-11-28 03:16:32,816 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states.. Second operand 3 states. Result 33 states and 47 transitions. Complement of second has 8 states. [2019-11-28 03:16:32,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 03:16:32,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 03:16:32,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2019-11-28 03:16:32,822 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-28 03:16:32,822 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:16:32,822 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-28 03:16:32,823 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:16:32,823 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-28 03:16:32,823 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:16:32,824 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 47 transitions. [2019-11-28 03:16:32,828 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-11-28 03:16:32,833 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 14 states and 19 transitions. [2019-11-28 03:16:32,835 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-28 03:16:32,835 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-28 03:16:32,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2019-11-28 03:16:32,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 03:16:32,837 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2019-11-28 03:16:32,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2019-11-28 03:16:32,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-28 03:16:32,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 03:16:32,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2019-11-28 03:16:32,872 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2019-11-28 03:16:32,872 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2019-11-28 03:16:32,873 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 03:16:32,873 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 19 transitions. [2019-11-28 03:16:32,874 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-11-28 03:16:32,874 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:16:32,874 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:16:32,874 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-28 03:16:32,874 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 03:16:32,875 INFO L794 eck$LassoCheckResult]: Stem: 113#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 112#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet3, main_#t~post2, main_#t~mem5, main_#t~post6, main_#t~post4, main_#t~mem8, main_#t~mem9, main_#t~post10, main_#t~post7, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet1 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet1 % 4294967296 % 4294967296 else main_#t~nondet1 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet1;assume 0 != (if main_~MAX~0 > 0 then 1 else 0);call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 107#L20-3 assume !(main_~i~0 < main_~MAX~0); 105#L20-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (main_~MAX~0 - 1), 1);main_~j~0 := 0;main_~i~0 := main_~MAX~0 - 1; 106#L27-3 [2019-11-28 03:16:32,875 INFO L796 eck$LassoCheckResult]: Loop: 106#L27-3 assume !!(main_~i~0 >= 0);call main_#t~mem5 := read~int(main_~#str1~0.base, main_~#str1~0.offset, 1);call write~int(main_#t~mem5, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem5;main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 115#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := main_#t~post4 - 1;havoc main_#t~post4; 106#L27-3 [2019-11-28 03:16:32,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:16:32,875 INFO L82 PathProgramCache]: Analyzing trace with hash 925707, now seen corresponding path program 1 times [2019-11-28 03:16:32,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:16:32,876 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650550328] [2019-11-28 03:16:32,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:16:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:16:32,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:16:32,933 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650550328] [2019-11-28 03:16:32,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 03:16:32,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 03:16:32,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416365909] [2019-11-28 03:16:32,937 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 03:16:32,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:16:32,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 1 times [2019-11-28 03:16:32,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:16:32,938 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870587511] [2019-11-28 03:16:32,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:16:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:16:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:16:32,952 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:16:33,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 03:16:33,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 03:16:33,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 03:16:33,016 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-28 03:16:33,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 03:16:33,041 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-28 03:16:33,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 03:16:33,042 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 17 transitions. [2019-11-28 03:16:33,043 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-28 03:16:33,044 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 14 states and 16 transitions. [2019-11-28 03:16:33,044 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-28 03:16:33,044 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-28 03:16:33,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2019-11-28 03:16:33,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 03:16:33,045 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-28 03:16:33,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2019-11-28 03:16:33,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-11-28 03:16:33,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-28 03:16:33,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-11-28 03:16:33,047 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-28 03:16:33,047 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-28 03:16:33,047 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 03:16:33,047 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 15 transitions. [2019-11-28 03:16:33,048 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-28 03:16:33,048 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:16:33,048 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:16:33,048 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 03:16:33,048 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 03:16:33,049 INFO L794 eck$LassoCheckResult]: Stem: 143#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 139#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet3, main_#t~post2, main_#t~mem5, main_#t~post6, main_#t~post4, main_#t~mem8, main_#t~mem9, main_#t~post10, main_#t~post7, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet1 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet1 % 4294967296 % 4294967296 else main_#t~nondet1 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet1;assume 0 != (if main_~MAX~0 > 0 then 1 else 0);call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 140#L20-3 assume !!(main_~i~0 < main_~MAX~0);call write~int(main_#t~nondet3, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet3; 146#L20-2 main_#t~post2 := main_~i~0;main_~i~0 := 1 + main_#t~post2;havoc main_#t~post2; 147#L20-3 assume !(main_~i~0 < main_~MAX~0); 144#L20-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (main_~MAX~0 - 1), 1);main_~j~0 := 0;main_~i~0 := main_~MAX~0 - 1; 145#L27-3 [2019-11-28 03:16:33,049 INFO L796 eck$LassoCheckResult]: Loop: 145#L27-3 assume !!(main_~i~0 >= 0);call main_#t~mem5 := read~int(main_~#str1~0.base, main_~#str1~0.offset, 1);call write~int(main_#t~mem5, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem5;main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 149#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := main_#t~post4 - 1;havoc main_#t~post4; 145#L27-3 [2019-11-28 03:16:33,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:16:33,049 INFO L82 PathProgramCache]: Analyzing trace with hash 889660429, now seen corresponding path program 1 times [2019-11-28 03:16:33,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:16:33,050 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237114499] [2019-11-28 03:16:33,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:16:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:16:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:16:33,090 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:16:33,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:16:33,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 2 times [2019-11-28 03:16:33,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:16:33,091 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626391681] [2019-11-28 03:16:33,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:16:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:16:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:16:33,103 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:16:33,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:16:33,104 INFO L82 PathProgramCache]: Analyzing trace with hash 265181135, now seen corresponding path program 1 times [2019-11-28 03:16:33,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:16:33,104 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134445647] [2019-11-28 03:16:33,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:16:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:16:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:16:33,178 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:16:33,523 WARN L192 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2019-11-28 03:16:33,719 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2019-11-28 03:16:33,724 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:16:33,724 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:16:33,724 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:16:33,724 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:16:33,725 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 03:16:33,725 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:16:33,725 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:16:33,725 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:16:33,725 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-1.c_Iteration3_Lasso [2019-11-28 03:16:33,725 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:16:33,725 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:16:33,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:33,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:33,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:33,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:33,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:33,860 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:33,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:33,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:33,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:33,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:33,871 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:33,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:33,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:33,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:33,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:34,151 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:16:34,152 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2019-11-28 03:16:34,162 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 [2019-11-28 03:16:34,164 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:16:34,164 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:16:34,164 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:16:34,164 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:16:34,164 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:16:34,165 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:16:34,165 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:16:34,168 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) [2019-11-28 03:16:34,181 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 [2019-11-28 03:16:34,183 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:16:34,183 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:16:34,183 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:16:34,183 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:16:34,183 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:16:34,184 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:16:34,184 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 [2019-11-28 03:16:34,186 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:16:34,198 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 [2019-11-28 03:16:34,200 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:16:34,200 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:16:34,200 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:16:34,201 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:16:34,206 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 03:16:34,206 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:16:34,215 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 [2019-11-28 03:16:34,234 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 [2019-11-28 03:16:34,236 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:16:34,236 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:16:34,236 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:16:34,236 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:16:34,239 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 03:16:34,240 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 03:16:34,245 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) [2019-11-28 03:16:34,262 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 [2019-11-28 03:16:34,263 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:16:34,263 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:16:34,264 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:16:34,264 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:16:34,267 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 03:16:34,267 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:16:34,272 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:16:34,296 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 [2019-11-28 03:16:34,298 INFO L338 nArgumentSynthesizer]: Template has degree 0. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:16:34,299 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:16:34,299 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:16:34,299 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:16:34,313 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 03:16:34,313 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 03:16:34,330 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 03:16:34,395 INFO L443 ModelExtractionUtils]: Simplification made 24 calls to the SMT solver. [2019-11-28 03:16:34,396 INFO L444 ModelExtractionUtils]: 3 out of 25 variables were initially zero. Simplification set additionally 18 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) [2019-11-28 03:16:34,400 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 [2019-11-28 03:16:34,406 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-28 03:16:34,406 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 03:16:34,406 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~#str2~0.base)_2, ULTIMATE.start_main_~#str2~0.offset, ULTIMATE.start_main_~j~0) = 1*v_rep(select #length ULTIMATE.start_main_~#str2~0.base)_2 - 1*ULTIMATE.start_main_~#str2~0.offset - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2019-11-28 03:16:34,417 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-11-28 03:16:34,420 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-28 03:16:34,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:16:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:16:34,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 03:16:34,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:16:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:16:34,459 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 03:16:34,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:16:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:16:34,480 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 [2019-11-28 03:16:34,480 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-28 03:16:34,489 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 17 states and 21 transitions. Complement of second has 5 states. [2019-11-28 03:16:34,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 03:16:34,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 03:16:34,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2019-11-28 03:16:34,492 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-28 03:16:34,493 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:16:34,493 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-28 03:16:34,493 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:16:34,493 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-28 03:16:34,494 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:16:34,494 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2019-11-28 03:16:34,495 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 03:16:34,496 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 16 states and 19 transitions. [2019-11-28 03:16:34,496 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-28 03:16:34,496 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-28 03:16:34,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 19 transitions. [2019-11-28 03:16:34,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 03:16:34,497 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-11-28 03:16:34,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 19 transitions. [2019-11-28 03:16:34,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-11-28 03:16:34,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-28 03:16:34,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2019-11-28 03:16:34,501 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2019-11-28 03:16:34,501 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2019-11-28 03:16:34,502 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 03:16:34,502 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2019-11-28 03:16:34,503 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 03:16:34,504 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:16:34,504 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:16:34,505 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 03:16:34,505 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 03:16:34,506 INFO L794 eck$LassoCheckResult]: Stem: 230#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 224#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet3, main_#t~post2, main_#t~mem5, main_#t~post6, main_#t~post4, main_#t~mem8, main_#t~mem9, main_#t~post10, main_#t~post7, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet1 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet1 % 4294967296 % 4294967296 else main_#t~nondet1 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet1;assume 0 != (if main_~MAX~0 > 0 then 1 else 0);call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 225#L20-3 assume !!(main_~i~0 < main_~MAX~0);call write~int(main_#t~nondet3, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet3; 233#L20-2 main_#t~post2 := main_~i~0;main_~i~0 := 1 + main_#t~post2;havoc main_#t~post2; 234#L20-3 assume !(main_~i~0 < main_~MAX~0); 231#L20-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (main_~MAX~0 - 1), 1);main_~j~0 := 0;main_~i~0 := main_~MAX~0 - 1; 232#L27-3 assume !(main_~i~0 >= 0); 235#L27-4 main_~j~0 := main_~MAX~0 - 1;main_~i~0 := 0; 227#L33-3 [2019-11-28 03:16:34,506 INFO L796 eck$LassoCheckResult]: Loop: 227#L33-3 assume !!(main_~i~0 < main_~MAX~0);call main_#t~mem8 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call main_#t~mem9 := read~int(main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);__VERIFIER_assert_#in~cond := (if main_#t~mem8 == main_#t~mem9 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 228#L5 assume !(0 == __VERIFIER_assert_~cond); 229#L5-2 havoc main_#t~mem9;havoc main_#t~mem8;main_#t~post10 := main_~j~0;main_~j~0 := main_#t~post10 - 1;havoc main_#t~post10; 226#L33-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 227#L33-3 [2019-11-28 03:16:34,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:16:34,507 INFO L82 PathProgramCache]: Analyzing trace with hash 265181077, now seen corresponding path program 1 times [2019-11-28 03:16:34,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:16:34,508 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072884631] [2019-11-28 03:16:34,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:16:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:16:34,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 03:16:34,573 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072884631] [2019-11-28 03:16:34,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 03:16:34,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 03:16:34,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658861543] [2019-11-28 03:16:34,574 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 03:16:34,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:16:34,575 INFO L82 PathProgramCache]: Analyzing trace with hash 2100362, now seen corresponding path program 1 times [2019-11-28 03:16:34,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:16:34,575 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561477153] [2019-11-28 03:16:34,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:16:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:16:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:16:34,590 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:16:34,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 03:16:34,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 03:16:34,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 03:16:34,727 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-28 03:16:34,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 03:16:34,765 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-28 03:16:34,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 03:16:34,766 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 17 transitions. [2019-11-28 03:16:34,766 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 03:16:34,767 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 17 transitions. [2019-11-28 03:16:34,767 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-28 03:16:34,768 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-28 03:16:34,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 17 transitions. [2019-11-28 03:16:34,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 03:16:34,768 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-28 03:16:34,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 17 transitions. [2019-11-28 03:16:34,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-28 03:16:34,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-28 03:16:34,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-28 03:16:34,770 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-28 03:16:34,771 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-28 03:16:34,771 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-28 03:16:34,771 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 17 transitions. [2019-11-28 03:16:34,771 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 03:16:34,771 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:16:34,772 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:16:34,774 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 03:16:34,775 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 03:16:34,776 INFO L794 eck$LassoCheckResult]: Stem: 269#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 265#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet3, main_#t~post2, main_#t~mem5, main_#t~post6, main_#t~post4, main_#t~mem8, main_#t~mem9, main_#t~post10, main_#t~post7, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet1 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet1 % 4294967296 % 4294967296 else main_#t~nondet1 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet1;assume 0 != (if main_~MAX~0 > 0 then 1 else 0);call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 266#L20-3 assume !!(main_~i~0 < main_~MAX~0);call write~int(main_#t~nondet3, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet3; 272#L20-2 main_#t~post2 := main_~i~0;main_~i~0 := 1 + main_#t~post2;havoc main_#t~post2; 273#L20-3 assume !(main_~i~0 < main_~MAX~0); 270#L20-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (main_~MAX~0 - 1), 1);main_~j~0 := 0;main_~i~0 := main_~MAX~0 - 1; 271#L27-3 assume !!(main_~i~0 >= 0);call main_#t~mem5 := read~int(main_~#str1~0.base, main_~#str1~0.offset, 1);call write~int(main_#t~mem5, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem5;main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 277#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := main_#t~post4 - 1;havoc main_#t~post4; 275#L27-3 assume !(main_~i~0 >= 0); 274#L27-4 main_~j~0 := main_~MAX~0 - 1;main_~i~0 := 0; 264#L33-3 [2019-11-28 03:16:34,776 INFO L796 eck$LassoCheckResult]: Loop: 264#L33-3 assume !!(main_~i~0 < main_~MAX~0);call main_#t~mem8 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call main_#t~mem9 := read~int(main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);__VERIFIER_assert_#in~cond := (if main_#t~mem8 == main_#t~mem9 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 267#L5 assume !(0 == __VERIFIER_assert_~cond); 268#L5-2 havoc main_#t~mem9;havoc main_#t~mem8;main_#t~post10 := main_~j~0;main_~j~0 := main_#t~post10 - 1;havoc main_#t~post10; 263#L33-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 264#L33-3 [2019-11-28 03:16:34,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:16:34,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1436000983, now seen corresponding path program 1 times [2019-11-28 03:16:34,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:16:34,778 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553955746] [2019-11-28 03:16:34,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:16:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:16:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:16:34,847 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:16:34,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:16:34,848 INFO L82 PathProgramCache]: Analyzing trace with hash 2100362, now seen corresponding path program 2 times [2019-11-28 03:16:34,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:16:34,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092613722] [2019-11-28 03:16:34,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:16:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:16:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:16:34,875 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:16:34,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:16:34,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1461824416, now seen corresponding path program 1 times [2019-11-28 03:16:34,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:16:34,879 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841213940] [2019-11-28 03:16:34,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:16:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:16:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:16:34,954 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:16:35,398 WARN L192 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 95 [2019-11-28 03:16:35,575 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-11-28 03:16:35,578 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:16:35,578 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:16:35,578 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:16:35,578 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:16:35,578 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 03:16:35,579 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:16:35,579 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:16:35,579 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:16:35,579 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-1.c_Iteration5_Lasso [2019-11-28 03:16:35,579 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:16:35,579 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:16:35,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:35,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:35,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:35,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:35,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:35,603 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:35,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:35,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:35,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:35,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:35,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:35,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:35,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:35,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:35,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:35,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:16:36,202 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:16:36,202 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:16:36,223 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 [2019-11-28 03:16:36,225 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:16:36,225 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:16:36,225 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:16:36,226 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:16:36,226 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:16:36,226 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:16:36,227 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 03:16:36,229 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:16:36,240 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 [2019-11-28 03:16:36,242 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:16:36,242 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:16:36,242 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:16:36,242 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:16:36,243 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:16:36,244 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:16:36,244 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:16:36,246 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:16:36,254 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 [2019-11-28 03:16:36,256 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:16:36,256 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:16:36,256 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:16:36,257 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:16:36,257 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:16:36,257 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:16:36,257 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:16:36,259 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:16:36,266 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 [2019-11-28 03:16:36,268 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:16:36,268 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:16:36,268 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:16:36,269 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:16:36,270 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 03:16:36,270 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:16:36,274 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:16:36,283 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 [2019-11-28 03:16:36,286 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:16:36,286 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:16:36,286 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:16:36,286 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:16:36,286 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:16:36,287 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:16:36,287 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:16:36,289 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:16:36,298 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 [2019-11-28 03:16:36,300 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:16:36,300 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:16:36,301 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:16:36,301 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:16:36,308 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 03:16:36,309 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:16:36,325 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 03:16:36,354 INFO L443 ModelExtractionUtils]: Simplification made 16 calls to the SMT solver. [2019-11-28 03:16:36,354 INFO L444 ModelExtractionUtils]: 9 out of 25 variables were initially zero. Simplification set additionally 12 variables to zero. 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) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:16:36,357 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 03:16:36,359 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-11-28 03:16:36,359 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 03:16:36,359 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~#str1~0.base)_3, ULTIMATE.start_main_~j~0) = 1*v_rep(select #length ULTIMATE.start_main_~#str1~0.base)_3 + 2*ULTIMATE.start_main_~j~0 Supporting invariants [-1*ULTIMATE.start_main_~#str2~0.offset >= 0] [2019-11-28 03:16:36,381 INFO L297 tatePredicateManager]: 4 out of 5 supporting invariants were superfluous and have been removed [2019-11-28 03:16:36,383 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-28 03:16:36,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:16:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:16:36,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 03:16:36,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:16:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:16:36,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 03:16:36,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:16:36,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:16:36,472 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2019-11-28 03:16:36,472 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 5 Second operand 5 states. [2019-11-28 03:16:36,505 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 5. Second operand 5 states. Result 20 states and 23 transitions. Complement of second has 7 states. [2019-11-28 03:16:36,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 03:16:36,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-28 03:16:36,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2019-11-28 03:16:36,507 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 10 letters. Loop has 4 letters. [2019-11-28 03:16:36,507 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:16:36,507 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 14 letters. Loop has 4 letters. [2019-11-28 03:16:36,508 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:16:36,508 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 10 letters. Loop has 8 letters. [2019-11-28 03:16:36,508 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:16:36,509 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2019-11-28 03:16:36,510 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 03:16:36,510 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 0 states and 0 transitions. [2019-11-28 03:16:36,510 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 03:16:36,510 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 03:16:36,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 03:16:36,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 03:16:36,510 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 03:16:36,510 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 03:16:36,511 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 03:16:36,511 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-28 03:16:36,511 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 03:16:36,511 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 03:16:36,511 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 03:16:36,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:16:36 BoogieIcfgContainer [2019-11-28 03:16:36,517 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 03:16:36,517 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 03:16:36,517 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 03:16:36,517 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 03:16:36,518 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:30" (3/4) ... [2019-11-28 03:16:36,521 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 03:16:36,521 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 03:16:36,522 INFO L168 Benchmark]: Toolchain (without parser) took 6425.53 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 312.0 MB). Free memory was 961.7 MB in the beginning and 1.2 GB in the end (delta: -275.4 MB). Peak memory consumption was 36.5 MB. Max. memory is 11.5 GB. [2019-11-28 03:16:36,523 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 03:16:36,523 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.12 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 03:16:36,524 INFO L168 Benchmark]: Boogie Procedure Inliner took 105.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -191.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-28 03:16:36,525 INFO L168 Benchmark]: Boogie Preprocessor took 33.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 03:16:36,525 INFO L168 Benchmark]: RCFGBuilder took 372.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2019-11-28 03:16:36,526 INFO L168 Benchmark]: BuchiAutomizer took 5642.56 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 166.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -121.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 11.5 GB. [2019-11-28 03:16:36,527 INFO L168 Benchmark]: Witness Printer took 3.70 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 03:16:36,531 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 263.12 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 105.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -191.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 372.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5642.56 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 166.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -121.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.70 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * i + MAX and consists of 5 locations. One deterministic module has affine ranking function unknown-#length-unknown[str2] + -1 * str2 + -1 * j and consists of 3 locations. One deterministic module has affine ranking function unknown-#length-unknown[str1] + 2 * j and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.5s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 5.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 40 SDtfs, 36 SDslu, 12 SDs, 0 SdLazy, 40 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU2 SILI0 SILT0 lasso3 LassoPreprocessingBenchmarks: Lassos: inital164 mio100 ax100 hnf100 lsp92 ukn60 mio100 lsp68 div160 bol100 ite100 ukn100 eq158 hnf69 smp94 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...