./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 f470102c 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 0.1.25-f470102 [2019-11-28 20:48:57,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:48:57,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:48:57,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:48:57,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:48:57,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:48:57,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:48:57,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:48:57,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:48:57,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:48:57,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:48:57,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:48:57,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:48:57,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:48:57,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:48:57,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:48:57,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:48:57,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:48:57,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:48:57,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:48:57,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:48:57,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:48:57,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:48:57,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:48:57,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:48:57,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:48:57,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:48:57,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:48:57,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:48:57,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:48:57,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:48:57,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:48:57,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:48:57,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:48:57,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:48:57,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:48:57,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:48:57,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:48:57,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:48:57,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:48:57,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:48:57,786 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-28 20:48:57,803 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:48:57,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:48:57,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:48:57,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:48:57,804 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:48:57,805 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 20:48:57,805 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 20:48:57,805 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 20:48:57,805 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 20:48:57,806 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 20:48:57,806 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 20:48:57,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:48:57,806 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:48:57,807 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:48:57,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:48:57,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:48:57,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:48:57,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 20:48:57,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 20:48:57,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 20:48:57,808 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:48:57,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:48:57,808 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 20:48:57,809 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:48:57,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 20:48:57,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:48:57,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:48:57,810 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 20:48:57,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:48:57,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:48:57,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:48:57,810 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 20:48:57,811 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 20:48:57,812 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 20:48:58,104 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:48:58,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:48:58,122 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:48:58,123 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:48:58,123 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:48:58,124 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/invert_string-1.c [2019-11-28 20:48:58,195 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96b4eb74d/5d2e1d0fbe36441c83668610c7096d93/FLAG62d6fc2b0 [2019-11-28 20:48:58,673 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:48:58,674 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/invert_string-1.c [2019-11-28 20:48:58,681 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96b4eb74d/5d2e1d0fbe36441c83668610c7096d93/FLAG62d6fc2b0 [2019-11-28 20:48:59,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96b4eb74d/5d2e1d0fbe36441c83668610c7096d93 [2019-11-28 20:48:59,101 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:48:59,103 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:48:59,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:48:59,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:48:59,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:48:59,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:48:59" (1/1) ... [2019-11-28 20:48:59,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f3601a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:59, skipping insertion in model container [2019-11-28 20:48:59,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:48:59" (1/1) ... [2019-11-28 20:48:59,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:48:59,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:48:59,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:48:59,355 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:48:59,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:48:59,400 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:48:59,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:59 WrapperNode [2019-11-28 20:48:59,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:48:59,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:48:59,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:48:59,402 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:48:59,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:59" (1/1) ... [2019-11-28 20:48:59,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:59" (1/1) ... [2019-11-28 20:48:59,497 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:48:59,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:48:59,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:48:59,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:48:59,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:59" (1/1) ... [2019-11-28 20:48:59,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:59" (1/1) ... [2019-11-28 20:48:59,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:59" (1/1) ... [2019-11-28 20:48:59,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:59" (1/1) ... [2019-11-28 20:48:59,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:59" (1/1) ... [2019-11-28 20:48:59,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:59" (1/1) ... [2019-11-28 20:48:59,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:59" (1/1) ... [2019-11-28 20:48:59,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:48:59,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:48:59,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:48:59,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:48:59,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:59" (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 20:48:59,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 20:48:59,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:48:59,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:48:59,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 20:48:59,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 20:48:59,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 20:48:59,911 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:48:59,912 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-28 20:48:59,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:48:59 BoogieIcfgContainer [2019-11-28 20:48:59,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:48:59,914 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 20:48:59,914 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 20:48:59,918 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 20:48:59,919 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:48:59,919 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 08:48:59" (1/3) ... [2019-11-28 20:48:59,920 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2c719bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:48:59, skipping insertion in model container [2019-11-28 20:48:59,921 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:48:59,921 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:48:59" (2/3) ... [2019-11-28 20:48:59,921 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2c719bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:48:59, skipping insertion in model container [2019-11-28 20:48:59,922 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:48:59,922 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:48:59" (3/3) ... [2019-11-28 20:48:59,924 INFO L371 chiAutomizerObserver]: Analyzing ICFG invert_string-1.c [2019-11-28 20:48:59,969 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 20:48:59,969 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 20:48:59,969 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 20:48:59,970 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:48:59,970 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:48:59,970 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 20:48:59,970 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:48:59,970 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 20:48:59,983 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-11-28 20:49:00,003 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-28 20:49:00,003 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:49:00,003 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:49:00,009 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 20:49:00,009 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:49:00,009 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 20:49:00,010 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-11-28 20:49:00,011 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-28 20:49:00,011 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:49:00,012 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:49:00,012 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 20:49:00,012 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:49:00,018 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 10#L-1true havoc main_#res;havoc main_#t~nondet1, main_#t~nondet3, main_#t~post2, main_#t~mem5, main_#t~post6, main_#t~post4, main_#t~mem8, main_#t~mem9, main_#t~post10, main_#t~post7, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet1 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet1 % 4294967296 % 4294967296 else main_#t~nondet1 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet1;assume 0 != (if main_~MAX~0 > 0 then 1 else 0);call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 6#L20-3true [2019-11-28 20:49:00,019 INFO L796 eck$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 20:49:00,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:00,024 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2019-11-28 20:49:00,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:49:00,032 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187474766] [2019-11-28 20:49:00,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:49:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:00,174 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:49:00,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:00,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2019-11-28 20:49:00,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:49:00,176 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465262766] [2019-11-28 20:49:00,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:49:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:00,194 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:49:00,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:00,196 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2019-11-28 20:49:00,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:49:00,196 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964410387] [2019-11-28 20:49:00,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:49:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:00,261 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:49:00,491 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-11-28 20:49:00,712 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2019-11-28 20:49:00,726 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:49:00,727 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:49:00,727 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:49:00,727 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:49:00,727 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:49:00,728 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:00,728 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:49:00,728 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:49:00,728 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-1.c_Iteration1_Lasso [2019-11-28 20:49:00,729 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:49:00,729 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:49:00,757 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 20:49:00,766 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 20:49:00,769 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 20:49:00,775 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 20:49:00,779 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 20:49:00,784 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 20:49:00,790 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 20:49:00,797 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 20:49:00,804 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 20:49:00,809 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 20:49:00,815 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 20:49:00,907 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 20:49:00,910 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 20:49:00,914 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 20:49:00,917 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 20:49:00,920 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 20:49:01,253 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:49:01,259 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 20:49:01,269 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 20:49:01,272 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:01,272 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:49:01,273 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:01,273 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:01,273 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:01,276 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:49:01,276 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:49:01,280 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 20:49:01,292 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 20:49:01,294 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:01,294 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:49:01,295 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:01,295 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:01,295 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:01,296 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:49:01,296 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:49:01,299 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) [2019-11-28 20:49:01,312 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 20:49:01,314 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:01,314 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:01,314 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:01,314 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:01,319 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:49:01,319 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:01,334 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:49:01,346 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 20:49:01,348 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:01,348 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:49:01,349 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:01,349 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:01,349 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:01,350 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:49:01,350 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 20:49:01,353 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) [2019-11-28 20:49:01,362 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 20:49:01,364 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:01,364 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:49:01,364 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:01,365 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:01,365 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:01,366 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:49:01,366 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:01,369 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) [2019-11-28 20:49:01,387 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 20:49:01,389 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:01,389 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:01,389 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:01,390 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:01,390 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:01,391 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:49:01,391 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:49:01,393 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) [2019-11-28 20:49:01,410 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 20:49:01,412 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:01,412 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:01,412 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:01,413 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:01,416 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:49:01,416 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:01,421 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 20:49:01,438 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 20:49:01,440 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:01,441 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:49:01,441 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:01,441 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:01,442 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:01,443 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:49:01,443 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 20:49:01,446 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 20:49:01,463 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 20:49:01,465 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:01,465 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:49:01,465 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:01,465 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:01,465 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:01,466 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:49:01,466 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:01,469 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) [2019-11-28 20:49:01,484 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 20:49:01,486 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:01,486 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:01,486 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:01,487 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:01,490 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:49:01,490 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:01,494 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) [2019-11-28 20:49:01,510 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 20:49:01,511 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:01,511 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:01,512 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:01,512 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:01,515 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:49:01,515 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:01,522 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) [2019-11-28 20:49:01,530 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 20:49:01,532 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:01,532 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:49:01,532 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:01,533 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:01,533 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:01,534 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:49:01,534 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:01,536 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 20:49:01,545 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 20:49:01,547 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:01,547 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:01,548 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:01,548 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:01,556 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:49:01,557 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 20:49:01,571 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:49:01,596 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-11-28 20:49:01,596 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) [2019-11-28 20:49:01,608 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:01,613 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-28 20:49:01,613 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:49:01,614 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 20:49:01,630 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-11-28 20:49:01,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:49:01,689 INFO L264 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:49:01,690 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:49:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:49:01,705 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:49:01,706 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:49:01,722 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 20:49:01,739 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 20:49:01,741 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 3 states. [2019-11-28 20:49:01,803 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 20:49:01,804 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 20:49:01,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:49:01,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2019-11-28 20:49:01,809 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-28 20:49:01,809 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:49:01,810 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-28 20:49:01,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:49:01,810 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-28 20:49:01,811 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:49:01,812 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 47 transitions. [2019-11-28 20:49:01,815 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-11-28 20:49:01,820 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 14 states and 19 transitions. [2019-11-28 20:49:01,821 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-28 20:49:01,822 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-28 20:49:01,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2019-11-28 20:49:01,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:49:01,823 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2019-11-28 20:49:01,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2019-11-28 20:49:01,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-28 20:49:01,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 20:49:01,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2019-11-28 20:49:01,855 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2019-11-28 20:49:01,855 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2019-11-28 20:49:01,855 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 20:49:01,856 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 19 transitions. [2019-11-28 20:49:01,856 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-11-28 20:49:01,857 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:49:01,857 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:49:01,857 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-28 20:49:01,857 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:49:01,858 INFO L794 eck$LassoCheckResult]: Stem: 113#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 112#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet3, main_#t~post2, main_#t~mem5, main_#t~post6, main_#t~post4, main_#t~mem8, main_#t~mem9, main_#t~post10, main_#t~post7, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet1 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet1 % 4294967296 % 4294967296 else main_#t~nondet1 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet1;assume 0 != (if main_~MAX~0 > 0 then 1 else 0);call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 107#L20-3 assume !(main_~i~0 < main_~MAX~0); 105#L20-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (main_~MAX~0 - 1), 1);main_~j~0 := 0;main_~i~0 := main_~MAX~0 - 1; 106#L27-3 [2019-11-28 20:49:01,858 INFO L796 eck$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 20:49:01,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:01,859 INFO L82 PathProgramCache]: Analyzing trace with hash 925707, now seen corresponding path program 1 times [2019-11-28 20:49:01,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:49:01,859 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425412786] [2019-11-28 20:49:01,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:49:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:49:01,985 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 20:49:01,986 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425412786] [2019-11-28 20:49:01,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:49:01,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:49:01,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877882040] [2019-11-28 20:49:01,993 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 20:49:01,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:01,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 1 times [2019-11-28 20:49:01,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:49:01,995 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562826674] [2019-11-28 20:49:01,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:49:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:02,039 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:49:02,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:49:02,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:49:02,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:49:02,130 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-28 20:49:02,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:49:02,163 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-28 20:49:02,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:49:02,164 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 17 transitions. [2019-11-28 20:49:02,166 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-28 20:49:02,166 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 14 states and 16 transitions. [2019-11-28 20:49:02,167 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-28 20:49:02,167 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-28 20:49:02,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2019-11-28 20:49:02,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:49:02,167 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-28 20:49:02,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2019-11-28 20:49:02,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-11-28 20:49:02,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-28 20:49:02,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-11-28 20:49:02,173 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-28 20:49:02,173 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-28 20:49:02,173 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 20:49:02,173 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 15 transitions. [2019-11-28 20:49:02,174 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-28 20:49:02,175 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:49:02,175 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:49:02,175 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 20:49:02,176 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:49:02,176 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 20:49:02,176 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 20:49:02,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:02,177 INFO L82 PathProgramCache]: Analyzing trace with hash 889660429, now seen corresponding path program 1 times [2019-11-28 20:49:02,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:49:02,177 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503313846] [2019-11-28 20:49:02,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:49:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:02,217 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:49:02,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:02,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 2 times [2019-11-28 20:49:02,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:49:02,218 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177461067] [2019-11-28 20:49:02,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:49:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:02,230 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:49:02,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:02,231 INFO L82 PathProgramCache]: Analyzing trace with hash 265181135, now seen corresponding path program 1 times [2019-11-28 20:49:02,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:49:02,231 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017259440] [2019-11-28 20:49:02,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:49:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:02,313 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:49:02,607 WARN L192 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Exception during sending of exit command (exit): Broken pipe [2019-11-28 20:49:02,835 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2019-11-28 20:49:02,840 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:49:02,840 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:49:02,840 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:49:02,840 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:49:02,841 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:49:02,841 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:02,841 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:49:02,841 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:49:02,841 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-1.c_Iteration3_Lasso [2019-11-28 20:49:02,841 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:49:02,841 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:49:02,848 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 20:49:02,851 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 20:49:02,853 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 20:49:02,858 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 20:49:02,985 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 20:49:02,988 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 20:49:02,990 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 20:49:02,991 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 20:49:02,993 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 20:49:02,995 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 20:49:02,998 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 20:49:03,000 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 20:49:03,002 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 20:49:03,004 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 20:49:03,006 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 20:49:03,283 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:49:03,283 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 20:49:03,294 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 20:49:03,295 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:03,296 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:49:03,296 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:03,296 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:03,296 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:03,297 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:49:03,297 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 20:49:03,299 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) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:03,314 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 20:49:03,316 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:03,316 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:49:03,316 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:03,316 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:03,316 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:03,317 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:49:03,317 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:49:03,319 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:03,329 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 20:49:03,331 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:03,331 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:03,332 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:03,332 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:03,337 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:49:03,337 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 20:49:03,343 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) [2019-11-28 20:49:03,356 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 20:49:03,358 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:03,358 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:03,358 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:03,358 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:03,363 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:49:03,363 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:03,368 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 20:49:03,387 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 20:49:03,389 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:03,389 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:03,389 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:03,390 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:03,394 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:49:03,394 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 20:49:03,399 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) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:03,416 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 20:49:03,418 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:03,418 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:03,419 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:03,419 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:03,428 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:49:03,428 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 20:49:03,445 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:49:03,553 INFO L443 ModelExtractionUtils]: Simplification made 24 calls to the SMT solver. [2019-11-28 20:49:03,554 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 20:49:03,565 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 20:49:03,569 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-28 20:49:03,569 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:49:03,569 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 20:49:03,584 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-11-28 20:49:03,586 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-28 20:49:03,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:49:03,626 INFO L264 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:49:03,627 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:49:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:49:03,640 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:49:03,640 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:49:03,769 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 20:49:03,770 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 20:49:03,771 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-28 20:49:03,787 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 20:49:03,788 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 20:49:03,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:49:03,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2019-11-28 20:49:03,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-28 20:49:03,789 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:49:03,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-28 20:49:03,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:49:03,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-28 20:49:03,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:49:03,791 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2019-11-28 20:49:03,793 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 20:49:03,794 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 16 states and 19 transitions. [2019-11-28 20:49:03,794 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-28 20:49:03,794 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-28 20:49:03,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 19 transitions. [2019-11-28 20:49:03,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:49:03,795 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-11-28 20:49:03,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 19 transitions. [2019-11-28 20:49:03,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-11-28 20:49:03,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-28 20:49:03,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2019-11-28 20:49:03,797 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2019-11-28 20:49:03,797 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2019-11-28 20:49:03,797 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 20:49:03,797 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2019-11-28 20:49:03,798 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 20:49:03,798 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:49:03,798 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:49:03,799 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:49:03,799 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 20:49:03,799 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 20:49:03,800 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 20:49:03,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:03,800 INFO L82 PathProgramCache]: Analyzing trace with hash 265181077, now seen corresponding path program 1 times [2019-11-28 20:49:03,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:49:03,800 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302004645] [2019-11-28 20:49:03,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:49:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:49:03,830 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 20:49:03,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302004645] [2019-11-28 20:49:03,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:49:03,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:49:03,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705288027] [2019-11-28 20:49:03,831 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 20:49:03,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:03,832 INFO L82 PathProgramCache]: Analyzing trace with hash 2100362, now seen corresponding path program 1 times [2019-11-28 20:49:03,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:49:03,832 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469924871] [2019-11-28 20:49:03,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:49:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:03,846 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:49:04,011 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2019-11-28 20:49:04,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:49:04,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:49:04,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:49:04,013 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-28 20:49:04,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:49:04,057 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-28 20:49:04,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:49:04,058 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 17 transitions. [2019-11-28 20:49:04,059 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 20:49:04,060 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 17 transitions. [2019-11-28 20:49:04,060 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-28 20:49:04,060 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-28 20:49:04,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 17 transitions. [2019-11-28 20:49:04,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:49:04,060 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-28 20:49:04,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 17 transitions. [2019-11-28 20:49:04,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-28 20:49:04,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-28 20:49:04,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-28 20:49:04,063 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-28 20:49:04,063 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-28 20:49:04,063 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-28 20:49:04,063 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 17 transitions. [2019-11-28 20:49:04,064 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 20:49:04,064 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:49:04,064 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:49:04,065 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:49:04,065 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 20:49:04,065 INFO L794 eck$LassoCheckResult]: Stem: 269#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 265#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet3, main_#t~post2, main_#t~mem5, main_#t~post6, main_#t~post4, main_#t~mem8, main_#t~mem9, main_#t~post10, main_#t~post7, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet1 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet1 % 4294967296 % 4294967296 else main_#t~nondet1 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet1;assume 0 != (if main_~MAX~0 > 0 then 1 else 0);call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 266#L20-3 assume !!(main_~i~0 < main_~MAX~0);call write~int(main_#t~nondet3, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet3; 272#L20-2 main_#t~post2 := main_~i~0;main_~i~0 := 1 + main_#t~post2;havoc main_#t~post2; 273#L20-3 assume !(main_~i~0 < main_~MAX~0); 270#L20-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (main_~MAX~0 - 1), 1);main_~j~0 := 0;main_~i~0 := main_~MAX~0 - 1; 271#L27-3 assume !!(main_~i~0 >= 0);call main_#t~mem5 := read~int(main_~#str1~0.base, main_~#str1~0.offset, 1);call write~int(main_#t~mem5, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem5;main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 277#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := main_#t~post4 - 1;havoc main_#t~post4; 275#L27-3 assume !(main_~i~0 >= 0); 274#L27-4 main_~j~0 := main_~MAX~0 - 1;main_~i~0 := 0; 264#L33-3 [2019-11-28 20:49:04,066 INFO L796 eck$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 20:49:04,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:04,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1436000983, now seen corresponding path program 1 times [2019-11-28 20:49:04,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:49:04,067 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565539040] [2019-11-28 20:49:04,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:49:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:04,145 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:49:04,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:04,147 INFO L82 PathProgramCache]: Analyzing trace with hash 2100362, now seen corresponding path program 2 times [2019-11-28 20:49:04,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:49:04,148 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140037822] [2019-11-28 20:49:04,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:49:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:04,182 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:49:04,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:04,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1461824416, now seen corresponding path program 1 times [2019-11-28 20:49:04,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:49:04,186 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745243175] [2019-11-28 20:49:04,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:49:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:49:04,291 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:49:04,479 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2019-11-28 20:49:04,823 WARN L192 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 95 [2019-11-28 20:49:05,015 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-11-28 20:49:05,018 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:49:05,019 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:49:05,019 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:49:05,019 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:49:05,019 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:49:05,019 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:05,019 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:49:05,019 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:49:05,020 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-1.c_Iteration5_Lasso [2019-11-28 20:49:05,020 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:49:05,020 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:49:05,024 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 20:49:05,029 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 20:49:05,031 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 20:49:05,033 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 20:49:05,037 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 20:49:05,040 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 20:49:05,237 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 20:49:05,239 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 20:49:05,244 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 20:49:05,246 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 20:49:05,250 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 20:49:05,252 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 20:49:05,256 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 20:49:05,258 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 20:49:05,260 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 20:49:05,262 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 20:49:05,630 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:49:05,634 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) [2019-11-28 20:49:05,640 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 20:49:05,642 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:05,642 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:49:05,642 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:05,642 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:05,642 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:05,643 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:49:05,643 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:49:05,657 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 Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 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 20:49:05,670 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 20:49:05,672 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:05,672 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:49:05,672 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:05,673 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:05,673 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:05,674 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:49:05,674 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 20:49:05,676 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) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:05,683 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 20:49:05,684 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:05,684 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:49:05,684 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:05,684 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:05,684 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:05,685 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:49:05,685 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:49:05,686 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) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:05,691 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 20:49:05,692 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:05,692 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:05,692 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:05,692 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:05,694 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:49:05,694 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 20:49:05,696 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 20:49:05,703 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:05,705 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:05,705 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:49:05,705 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:05,706 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:05,706 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:05,707 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:49:05,707 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:49:05,715 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 20:49:05,724 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:49:05,727 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:49:05,727 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:49:05,727 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:49:05,728 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:49:05,739 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:49:05,739 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 20:49:05,757 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:49:05,799 INFO L443 ModelExtractionUtils]: Simplification made 16 calls to the SMT solver. [2019-11-28 20:49:05,799 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) [2019-11-28 20:49:05,804 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:49:05,807 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-11-28 20:49:05,808 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:49:05,808 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 20:49:05,825 INFO L297 tatePredicateManager]: 4 out of 5 supporting invariants were superfluous and have been removed [2019-11-28 20:49:05,828 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-28 20:49:05,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:49:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:49:05,876 INFO L264 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 20:49:05,878 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:49:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:49:05,897 INFO L264 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 20:49:05,897 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:49:05,942 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 20:49:05,943 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 20:49:05,943 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 5 Second operand 5 states. [2019-11-28 20:49:05,985 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 20:49:05,986 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 20:49:05,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-28 20:49:05,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2019-11-28 20:49:05,987 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 10 letters. Loop has 4 letters. [2019-11-28 20:49:05,987 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:49:05,987 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 14 letters. Loop has 4 letters. [2019-11-28 20:49:05,988 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:49:05,988 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 10 letters. Loop has 8 letters. [2019-11-28 20:49:05,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:49:05,989 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2019-11-28 20:49:05,990 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:49:05,990 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 0 states and 0 transitions. [2019-11-28 20:49:05,990 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 20:49:05,990 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 20:49:05,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 20:49:05,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:49:05,991 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:49:05,995 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:49:05,996 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:49:05,996 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-28 20:49:05,996 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 20:49:05,996 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:49:05,996 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 20:49:06,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 08:49:06 BoogieIcfgContainer [2019-11-28 20:49:06,004 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 20:49:06,006 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:49:06,006 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:49:06,007 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:49:06,007 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:48:59" (3/4) ... [2019-11-28 20:49:06,013 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 20:49:06,014 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:49:06,016 INFO L168 Benchmark]: Toolchain (without parser) took 6913.01 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 291.5 MB). Free memory was 953.6 MB in the beginning and 1.2 GB in the end (delta: -268.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:49:06,016 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:49:06,021 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.75 ms. Allocated memory is still 1.0 GB. Free memory was 953.6 MB in the beginning and 942.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:49:06,023 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 942.9 MB in the beginning and 1.1 GB in the end (delta: -203.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:49:06,025 INFO L168 Benchmark]: Boogie Preprocessor took 35.94 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:49:06,031 INFO L168 Benchmark]: RCFGBuilder took 379.25 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: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. [2019-11-28 20:49:06,034 INFO L168 Benchmark]: BuchiAutomizer took 6090.59 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 141.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -101.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 11.5 GB. [2019-11-28 20:49:06,035 INFO L168 Benchmark]: Witness Printer took 7.55 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 20:49:06,040 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 296.75 ms. Allocated memory is still 1.0 GB. Free memory was 953.6 MB in the beginning and 942.9 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 96.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 942.9 MB in the beginning and 1.1 GB in the end (delta: -203.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.94 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 379.25 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: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 6090.59 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 141.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -101.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 11.5 GB. * Witness Printer took 7.55 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 6.0s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 5.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 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: 32ms 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...