./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/terminator_02-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/terminator_02-2.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 c39fd0351744516d27a824f9d04afb4690ded14c ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 15:18:52,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 15:18:52,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 15:18:52,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 15:18:52,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 15:18:52,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 15:18:52,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 15:18:52,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 15:18:52,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 15:18:52,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 15:18:52,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 15:18:52,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 15:18:52,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 15:18:52,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 15:18:52,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 15:18:52,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 15:18:52,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 15:18:52,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 15:18:52,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 15:18:52,815 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 15:18:52,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 15:18:52,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 15:18:52,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 15:18:52,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 15:18:52,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 15:18:52,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 15:18:52,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 15:18:52,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 15:18:52,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 15:18:52,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 15:18:52,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 15:18:52,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 15:18:52,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 15:18:52,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 15:18:52,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 15:18:52,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 15:18:52,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 15:18:52,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 15:18:52,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 15:18:52,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 15:18:52,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 15:18:52,834 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 15:18:52,862 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 15:18:52,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 15:18:52,863 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 15:18:52,863 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 15:18:52,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 15:18:52,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 15:18:52,865 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 15:18:52,865 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 15:18:52,865 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 15:18:52,865 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 15:18:52,866 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 15:18:52,866 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 15:18:52,866 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 15:18:52,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 15:18:52,867 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 15:18:52,867 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 15:18:52,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 15:18:52,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 15:18:52,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 15:18:52,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 15:18:52,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 15:18:52,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 15:18:52,868 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 15:18:52,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 15:18:52,868 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 15:18:52,868 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 15:18:52,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 15:18:52,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 15:18:52,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 15:18:52,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 15:18:52,869 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 15:18:52,869 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 15:18:52,870 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 15:18:52,870 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c39fd0351744516d27a824f9d04afb4690ded14c [2021-08-27 15:18:53,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 15:18:53,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 15:18:53,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 15:18:53,135 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 15:18:53,135 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 15:18:53,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/terminator_02-2.c [2021-08-27 15:18:53,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44aac55f6/15e43fce6ea749cba9335bd0aa2119f4/FLAG5bec065c6 [2021-08-27 15:18:53,535 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 15:18:53,535 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/terminator_02-2.c [2021-08-27 15:18:53,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44aac55f6/15e43fce6ea749cba9335bd0aa2119f4/FLAG5bec065c6 [2021-08-27 15:18:53,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44aac55f6/15e43fce6ea749cba9335bd0aa2119f4 [2021-08-27 15:18:53,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 15:18:53,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 15:18:53,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 15:18:53,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 15:18:53,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 15:18:53,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:18:53" (1/1) ... [2021-08-27 15:18:53,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@486801f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:18:53, skipping insertion in model container [2021-08-27 15:18:53,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:18:53" (1/1) ... [2021-08-27 15:18:53,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 15:18:53,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 15:18:53,681 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/terminator_02-2.c[414,427] [2021-08-27 15:18:53,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:18:53,697 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 15:18:53,705 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/terminator_02-2.c[414,427] [2021-08-27 15:18:53,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:18:53,720 INFO L208 MainTranslator]: Completed translation [2021-08-27 15:18:53,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:18:53 WrapperNode [2021-08-27 15:18:53,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 15:18:53,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 15:18:53,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 15:18:53,722 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 15:18:53,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:18:53" (1/1) ... [2021-08-27 15:18:53,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:18:53" (1/1) ... [2021-08-27 15:18:53,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 15:18:53,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 15:18:53,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 15:18:53,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 15:18:53,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:18:53" (1/1) ... [2021-08-27 15:18:53,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:18:53" (1/1) ... [2021-08-27 15:18:53,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:18:53" (1/1) ... [2021-08-27 15:18:53,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:18:53" (1/1) ... [2021-08-27 15:18:53,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:18:53" (1/1) ... [2021-08-27 15:18:53,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:18:53" (1/1) ... [2021-08-27 15:18:53,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:18:53" (1/1) ... [2021-08-27 15:18:53,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 15:18:53,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 15:18:53,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 15:18:53,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 15:18:53,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:18:53" (1/1) ... [2021-08-27 15:18:53,797 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:53,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:53,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:53,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 15:18:53,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 15:18:53,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 15:18:53,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 15:18:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 15:18:54,049 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 15:18:54,049 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-27 15:18:54,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:18:54 BoogieIcfgContainer [2021-08-27 15:18:54,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 15:18:54,051 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 15:18:54,051 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 15:18:54,053 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 15:18:54,053 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:18:54,053 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 03:18:53" (1/3) ... [2021-08-27 15:18:54,054 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@442c243d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:18:54, skipping insertion in model container [2021-08-27 15:18:54,054 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:18:54,054 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:18:53" (2/3) ... [2021-08-27 15:18:54,054 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@442c243d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:18:54, skipping insertion in model container [2021-08-27 15:18:54,054 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:18:54,054 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:18:54" (3/3) ... [2021-08-27 15:18:54,055 INFO L389 chiAutomizerObserver]: Analyzing ICFG terminator_02-2.c [2021-08-27 15:18:54,102 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 15:18:54,103 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 15:18:54,103 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 15:18:54,103 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 15:18:54,103 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 15:18:54,103 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 15:18:54,103 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 15:18:54,103 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 15:18:54,111 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:18:54,120 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-27 15:18:54,121 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:18:54,121 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:18:54,124 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:18:54,124 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-27 15:18:54,124 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 15:18:54,124 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:18:54,125 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-27 15:18:54,125 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:18:54,125 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:18:54,126 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:18:54,126 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-27 15:18:54,139 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 8#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~post10, main_#t~post11, main_#t~post12, main_~tmp~0, main_~x~0, main_~z~0;main_~x~0 := main_#t~nondet7;havoc main_#t~nondet7;main_~z~0 := main_#t~nondet8;havoc main_#t~nondet8; 9#L22true assume !!(main_~x~0 > -100); 12#L23true assume !!(main_~x~0 < 200); 13#L24true assume !!(main_~z~0 > 100); 6#L25true assume !!(main_~z~0 < 200); 17#L29-2true [2021-08-27 15:18:54,140 INFO L793 eck$LassoCheckResult]: Loop: 17#L29-2true assume !!(main_~x~0 < 100 && main_~z~0 > 100);main_~tmp~0 := main_#t~nondet9;havoc main_#t~nondet9; 7#L29true assume 0 != main_~tmp~0 % 256;main_#t~post10 := main_~x~0;main_~x~0 := 1 + main_#t~post10;havoc main_#t~post10; 17#L29-2true [2021-08-27 15:18:54,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:18:54,144 INFO L82 PathProgramCache]: Analyzing trace with hash 889571341, now seen corresponding path program 1 times [2021-08-27 15:18:54,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:18:54,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759986873] [2021-08-27 15:18:54,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:18:54,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:18:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:18:54,203 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:18:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:18:54,223 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:18:54,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:18:54,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1956, now seen corresponding path program 1 times [2021-08-27 15:18:54,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:18:54,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473503631] [2021-08-27 15:18:54,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:18:54,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:18:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:18:54,229 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:18:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:18:54,237 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:18:54,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:18:54,239 INFO L82 PathProgramCache]: Analyzing trace with hash 179567792, now seen corresponding path program 1 times [2021-08-27 15:18:54,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:18:54,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779145354] [2021-08-27 15:18:54,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:18:54,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:18:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:18:54,263 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:18:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:18:54,293 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:18:54,382 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:18:54,382 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:18:54,382 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:18:54,382 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:18:54,383 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 15:18:54,383 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:54,383 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:18:54,383 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:18:54,383 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-2.c_Iteration1_Loop [2021-08-27 15:18:54,383 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:18:54,383 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:18:54,395 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:54,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:54,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:54,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:54,531 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:18:54,531 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 15:18:54,533 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:54,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:54,534 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:54,543 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:18:54,544 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:18:54,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-08-27 15:18:54,564 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:18:54,564 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet9=77, ULTIMATE.start_main_~tmp~0=77} Honda state: {ULTIMATE.start_main_#t~nondet9=77, ULTIMATE.start_main_~tmp~0=77} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 15:18:54,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:54,583 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:54,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:54,584 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:54,592 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:18:54,592 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:18:54,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-08-27 15:18:54,618 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:18:54,619 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post10=0} Honda state: {ULTIMATE.start_main_#t~post10=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 15:18:54,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:54,638 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:54,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:54,639 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:54,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-08-27 15:18:54,645 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:18:54,645 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:18:54,658 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:18:54,658 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~z~0=101} Honda state: {ULTIMATE.start_main_~z~0=101} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 15:18:54,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:54,674 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:54,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:54,675 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:54,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-08-27 15:18:54,677 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:18:54,678 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:18:54,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:54,716 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:54,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:54,717 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:54,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-08-27 15:18:54,721 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 15:18:54,721 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:18:54,751 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 15:18:54,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:54,756 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:18:54,756 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:18:54,756 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:18:54,756 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:18:54,756 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 15:18:54,756 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:54,757 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:18:54,757 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:18:54,757 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-2.c_Iteration1_Loop [2021-08-27 15:18:54,757 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:18:54,757 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:18:54,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:54,767 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:54,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:54,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:54,868 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:18:54,871 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 15:18:54,872 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:54,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:54,873 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:54,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-08-27 15:18:54,895 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 15:18:54,905 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:18:54,905 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:18:54,906 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:18:54,906 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:18:54,906 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:18:54,910 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:18:54,910 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:18:54,917 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:18:54,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:54,934 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:54,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:54,935 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:54,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-08-27 15:18:54,948 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 15:18:54,956 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:18:54,956 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:18:54,956 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:18:54,956 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:18:54,956 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:18:54,957 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:18:54,957 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:18:54,960 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:18:54,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:54,977 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:54,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:54,978 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:54,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-08-27 15:18:54,980 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 15:18:54,987 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:18:54,987 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:18:54,987 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:18:54,987 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:18:54,987 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:18:54,988 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:18:54,988 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:18:54,992 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:18:55,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:55,010 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:55,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:55,011 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:55,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-08-27 15:18:55,014 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 15:18:55,021 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:18:55,021 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:18:55,021 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:18:55,021 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:18:55,021 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:18:55,022 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:18:55,022 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:18:55,028 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 15:18:55,031 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 15:18:55,032 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 15:18:55,032 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:55,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:55,033 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:55,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-08-27 15:18:55,036 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 15:18:55,036 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 15:18:55,036 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 15:18:55,036 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [2021-08-27 15:18:55,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:55,056 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 15:18:55,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:18:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:18:55,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:18:55,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:18:55,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:18:55,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 15:18:55,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:18:55,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:18:55,203 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 [2021-08-27 15:18:55,204 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:18:55,241 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 43 states and 56 transitions. Complement of second has 8 states. [2021-08-27 15:18:55,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-27 15:18:55,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:18:55,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 30 transitions. [2021-08-27 15:18:55,244 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 30 transitions. Stem has 6 letters. Loop has 2 letters. [2021-08-27 15:18:55,244 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:18:55,244 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 30 transitions. Stem has 8 letters. Loop has 2 letters. [2021-08-27 15:18:55,244 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:18:55,244 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 30 transitions. Stem has 6 letters. Loop has 4 letters. [2021-08-27 15:18:55,245 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:18:55,245 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 56 transitions. [2021-08-27 15:18:55,247 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-27 15:18:55,249 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 12 states and 15 transitions. [2021-08-27 15:18:55,249 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-08-27 15:18:55,249 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-08-27 15:18:55,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2021-08-27 15:18:55,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 15:18:55,250 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-08-27 15:18:55,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2021-08-27 15:18:55,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-08-27 15:18:55,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:18:55,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2021-08-27 15:18:55,263 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-08-27 15:18:55,263 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-08-27 15:18:55,264 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 15:18:55,264 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2021-08-27 15:18:55,264 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-27 15:18:55,264 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:18:55,264 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:18:55,265 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:18:55,265 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-27 15:18:55,265 INFO L791 eck$LassoCheckResult]: Stem: 112#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 113#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~post10, main_#t~post11, main_#t~post12, main_~tmp~0, main_~x~0, main_~z~0;main_~x~0 := main_#t~nondet7;havoc main_#t~nondet7;main_~z~0 := main_#t~nondet8;havoc main_#t~nondet8; 110#L22 assume !!(main_~x~0 > -100); 111#L23 assume !!(main_~x~0 < 200); 120#L24 assume !!(main_~z~0 > 100); 114#L25 assume !!(main_~z~0 < 200); 115#L29-2 assume !!(main_~x~0 < 100 && main_~z~0 > 100);main_~tmp~0 := main_#t~nondet9;havoc main_#t~nondet9; 116#L29 assume !(0 != main_~tmp~0 % 256);main_#t~post11 := main_~x~0;main_~x~0 := main_#t~post11 - 1;havoc main_#t~post11;main_#t~post12 := main_~z~0;main_~z~0 := main_#t~post12 - 1;havoc main_#t~post12; 117#L29-2 [2021-08-27 15:18:55,265 INFO L793 eck$LassoCheckResult]: Loop: 117#L29-2 assume !!(main_~x~0 < 100 && main_~z~0 > 100);main_~tmp~0 := main_#t~nondet9;havoc main_#t~nondet9; 121#L29 assume 0 != main_~tmp~0 % 256;main_#t~post10 := main_~x~0;main_~x~0 := 1 + main_#t~post10;havoc main_#t~post10; 117#L29-2 [2021-08-27 15:18:55,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:18:55,265 INFO L82 PathProgramCache]: Analyzing trace with hash 179567794, now seen corresponding path program 1 times [2021-08-27 15:18:55,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:18:55,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871679554] [2021-08-27 15:18:55,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:18:55,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:18:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:18:55,279 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:18:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:18:55,294 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:18:55,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:18:55,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1956, now seen corresponding path program 2 times [2021-08-27 15:18:55,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:18:55,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964179871] [2021-08-27 15:18:55,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:18:55,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:18:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:18:55,302 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:18:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:18:55,313 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:18:55,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:18:55,314 INFO L82 PathProgramCache]: Analyzing trace with hash 765959189, now seen corresponding path program 1 times [2021-08-27 15:18:55,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:18:55,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316603475] [2021-08-27 15:18:55,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:18:55,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:18:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:18:55,323 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:18:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:18:55,337 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:18:55,387 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:18:55,388 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:18:55,388 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:18:55,388 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:18:55,388 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 15:18:55,388 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:55,388 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:18:55,388 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:18:55,388 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-2.c_Iteration2_Loop [2021-08-27 15:18:55,388 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:18:55,389 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:18:55,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:55,395 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:55,398 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:55,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:55,497 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:18:55,497 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 15:18:55,498 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:55,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:55,500 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:55,510 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:18:55,511 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:18:55,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-08-27 15:18:55,530 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:18:55,530 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~z~0=101} Honda state: {ULTIMATE.start_main_~z~0=101} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 15:18:55,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:55,561 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:55,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:55,562 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:55,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-08-27 15:18:55,564 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:18:55,564 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:18:55,573 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:18:55,573 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post10=0} Honda state: {ULTIMATE.start_main_#t~post10=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 15:18:55,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:55,588 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:55,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:55,593 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:55,611 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:18:55,612 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:18:55,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-08-27 15:18:55,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:55,650 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:55,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:55,651 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:55,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-08-27 15:18:55,653 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 15:18:55,653 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:18:55,681 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 15:18:55,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:55,683 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:18:55,684 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:18:55,684 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:18:55,684 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:18:55,684 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 15:18:55,684 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:55,684 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:18:55,684 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:18:55,684 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-2.c_Iteration2_Loop [2021-08-27 15:18:55,684 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:18:55,684 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:18:55,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:55,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:55,696 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:55,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:55,806 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:18:55,806 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 15:18:55,807 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:55,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:55,809 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:55,818 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 15:18:55,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-08-27 15:18:55,824 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:18:55,824 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:18:55,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:18:55,825 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:18:55,825 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:18:55,826 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:18:55,826 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:18:55,829 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:18:55,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:55,844 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:55,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:55,845 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:55,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-08-27 15:18:55,848 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 15:18:55,855 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:18:55,855 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:18:55,855 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:18:55,855 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:18:55,855 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:18:55,855 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:18:55,855 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:18:55,858 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:18:55,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:55,874 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:55,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:55,874 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:55,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-08-27 15:18:55,876 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 15:18:55,883 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:18:55,883 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:18:55,883 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:18:55,883 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:18:55,883 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:18:55,884 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:18:55,884 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:18:55,885 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 15:18:55,888 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 15:18:55,888 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 15:18:55,888 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:55,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:55,889 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:55,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-08-27 15:18:55,890 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 15:18:55,890 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 15:18:55,890 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 15:18:55,890 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [2021-08-27 15:18:55,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:55,906 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 15:18:55,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:18:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:18:55,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:18:55,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:18:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:18:55,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 15:18:55,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:18:56,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:18:56,003 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 [2021-08-27 15:18:56,003 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:18:56,014 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 21 transitions. Complement of second has 5 states. [2021-08-27 15:18:56,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-27 15:18:56,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:18:56,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2021-08-27 15:18:56,016 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2021-08-27 15:18:56,016 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:18:56,016 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 10 letters. Loop has 2 letters. [2021-08-27 15:18:56,016 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:18:56,016 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 4 letters. [2021-08-27 15:18:56,016 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:18:56,017 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 21 transitions. [2021-08-27 15:18:56,019 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-27 15:18:56,020 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 21 transitions. [2021-08-27 15:18:56,020 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-08-27 15:18:56,020 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-08-27 15:18:56,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 21 transitions. [2021-08-27 15:18:56,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 15:18:56,020 INFO L681 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2021-08-27 15:18:56,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 21 transitions. [2021-08-27 15:18:56,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-08-27 15:18:56,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:18:56,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2021-08-27 15:18:56,022 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2021-08-27 15:18:56,022 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2021-08-27 15:18:56,022 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 15:18:56,023 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 21 transitions. [2021-08-27 15:18:56,024 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-27 15:18:56,024 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:18:56,024 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:18:56,025 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-08-27 15:18:56,025 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-27 15:18:56,026 INFO L791 eck$LassoCheckResult]: Stem: 191#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 192#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~post10, main_#t~post11, main_#t~post12, main_~tmp~0, main_~x~0, main_~z~0;main_~x~0 := main_#t~nondet7;havoc main_#t~nondet7;main_~z~0 := main_#t~nondet8;havoc main_#t~nondet8; 189#L22 assume !!(main_~x~0 > -100); 190#L23 assume !!(main_~x~0 < 200); 195#L24 assume !!(main_~z~0 > 100); 193#L25 assume !!(main_~z~0 < 200); 194#L29-2 assume !!(main_~x~0 < 100 && main_~z~0 > 100);main_~tmp~0 := main_#t~nondet9;havoc main_#t~nondet9; 196#L29 assume !(0 != main_~tmp~0 % 256);main_#t~post11 := main_~x~0;main_~x~0 := main_#t~post11 - 1;havoc main_#t~post11;main_#t~post12 := main_~z~0;main_~z~0 := main_#t~post12 - 1;havoc main_#t~post12; 197#L29-2 assume !!(main_~x~0 < 100 && main_~z~0 > 100);main_~tmp~0 := main_#t~nondet9;havoc main_#t~nondet9; 202#L29 assume !(0 != main_~tmp~0 % 256);main_#t~post11 := main_~x~0;main_~x~0 := main_#t~post11 - 1;havoc main_#t~post11;main_#t~post12 := main_~z~0;main_~z~0 := main_#t~post12 - 1;havoc main_#t~post12; 200#L29-2 [2021-08-27 15:18:56,026 INFO L793 eck$LassoCheckResult]: Loop: 200#L29-2 assume !!(main_~x~0 < 100 && main_~z~0 > 100);main_~tmp~0 := main_#t~nondet9;havoc main_#t~nondet9; 201#L29 assume 0 != main_~tmp~0 % 256;main_#t~post10 := main_~x~0;main_~x~0 := 1 + main_#t~post10;havoc main_#t~post10; 200#L29-2 [2021-08-27 15:18:56,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:18:56,026 INFO L82 PathProgramCache]: Analyzing trace with hash 765959191, now seen corresponding path program 2 times [2021-08-27 15:18:56,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:18:56,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479807270] [2021-08-27 15:18:56,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:18:56,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:18:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:18:56,065 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:18:56,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:56,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:18:56,073 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:18:56,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:18:56,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1956, now seen corresponding path program 3 times [2021-08-27 15:18:56,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:18:56,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13652372] [2021-08-27 15:18:56,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:18:56,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:18:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:18:56,080 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:18:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:18:56,086 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:18:56,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:18:56,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1647375930, now seen corresponding path program 2 times [2021-08-27 15:18:56,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:18:56,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161470159] [2021-08-27 15:18:56,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:18:56,088 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:18:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:18:56,106 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:18:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:18:56,123 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:18:56,163 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:18:56,163 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:18:56,163 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:18:56,164 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:18:56,164 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 15:18:56,164 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:56,164 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:18:56,164 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:18:56,164 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-2.c_Iteration3_Loop [2021-08-27 15:18:56,164 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:18:56,164 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:18:56,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:56,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:56,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:56,176 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:56,226 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:18:56,227 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 15:18:56,227 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:56,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:56,228 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:56,234 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:18:56,235 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:18:56,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-08-27 15:18:56,252 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:18:56,252 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~z~0=101} Honda state: {ULTIMATE.start_main_~z~0=101} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 15:18:56,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:56,270 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:56,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:56,271 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:56,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-08-27 15:18:56,273 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:18:56,273 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:18:56,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:56,305 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:56,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:56,306 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:56,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-08-27 15:18:56,308 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 15:18:56,308 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:18:56,339 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 15:18:56,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2021-08-27 15:18:56,342 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:18:56,342 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:18:56,342 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:18:56,342 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:18:56,342 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 15:18:56,342 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:56,342 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:18:56,342 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:18:56,342 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-2.c_Iteration3_Loop [2021-08-27 15:18:56,342 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:18:56,342 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:18:56,343 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:56,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:56,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:56,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:56,426 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:18:56,426 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 15:18:56,426 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:56,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:56,441 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:56,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-08-27 15:18:56,449 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 15:18:56,455 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:18:56,455 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:18:56,455 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:18:56,455 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:18:56,455 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:18:56,455 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:18:56,455 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:18:56,457 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:18:56,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:56,472 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:56,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:56,473 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:56,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-08-27 15:18:56,475 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 15:18:56,481 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:18:56,481 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:18:56,481 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:18:56,481 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:18:56,481 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:18:56,482 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:18:56,482 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:18:56,508 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 15:18:56,510 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 15:18:56,510 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 15:18:56,511 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:56,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:56,511 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:56,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-08-27 15:18:56,513 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 15:18:56,513 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 15:18:56,513 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 15:18:56,513 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [2021-08-27 15:18:56,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-08-27 15:18:56,529 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 15:18:56,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:56,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:18:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:18:56,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:18:56,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:18:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:18:56,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 15:18:56,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:18:56,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:18:56,624 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 [2021-08-27 15:18:56,624 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:18:56,635 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 18 states and 25 transitions. Complement of second has 5 states. [2021-08-27 15:18:56,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-27 15:18:56,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:18:56,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2021-08-27 15:18:56,636 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 10 letters. Loop has 2 letters. [2021-08-27 15:18:56,636 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:18:56,636 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-27 15:18:56,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:18:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:18:56,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:18:56,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:18:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:18:56,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 15:18:56,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:18:56,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:18:56,699 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-27 15:18:56,699 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:18:56,707 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 18 states and 25 transitions. Complement of second has 5 states. [2021-08-27 15:18:56,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-27 15:18:56,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:18:56,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2021-08-27 15:18:56,708 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 10 letters. Loop has 2 letters. [2021-08-27 15:18:56,708 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:18:56,708 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-27 15:18:56,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:18:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:18:56,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:18:56,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:18:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:18:56,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 15:18:56,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:18:56,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:18:56,768 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-27 15:18:56,769 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:18:56,778 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 20 states and 28 transitions. Complement of second has 4 states. [2021-08-27 15:18:56,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-27 15:18:56,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:18:56,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2021-08-27 15:18:56,779 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 2 letters. [2021-08-27 15:18:56,779 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:18:56,779 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 12 letters. Loop has 2 letters. [2021-08-27 15:18:56,779 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:18:56,779 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 4 letters. [2021-08-27 15:18:56,779 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:18:56,780 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 28 transitions. [2021-08-27 15:18:56,780 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-08-27 15:18:56,780 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 18 states and 24 transitions. [2021-08-27 15:18:56,781 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-08-27 15:18:56,781 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-08-27 15:18:56,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2021-08-27 15:18:56,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 15:18:56,781 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2021-08-27 15:18:56,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2021-08-27 15:18:56,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 10. [2021-08-27 15:18:56,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:18:56,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-08-27 15:18:56,782 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-08-27 15:18:56,782 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-08-27 15:18:56,782 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 15:18:56,782 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2021-08-27 15:18:56,783 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-08-27 15:18:56,783 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:18:56,783 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:18:56,783 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:18:56,783 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-27 15:18:56,783 INFO L791 eck$LassoCheckResult]: Stem: 403#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 404#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~post10, main_#t~post11, main_#t~post12, main_~tmp~0, main_~x~0, main_~z~0;main_~x~0 := main_#t~nondet7;havoc main_#t~nondet7;main_~z~0 := main_#t~nondet8;havoc main_#t~nondet8; 401#L22 assume !!(main_~x~0 > -100); 402#L23 assume !!(main_~x~0 < 200); 410#L24 assume !!(main_~z~0 > 100); 405#L25 assume !!(main_~z~0 < 200); 406#L29-2 [2021-08-27 15:18:56,783 INFO L793 eck$LassoCheckResult]: Loop: 406#L29-2 assume !!(main_~x~0 < 100 && main_~z~0 > 100);main_~tmp~0 := main_#t~nondet9;havoc main_#t~nondet9; 407#L29 assume !(0 != main_~tmp~0 % 256);main_#t~post11 := main_~x~0;main_~x~0 := main_#t~post11 - 1;havoc main_#t~post11;main_#t~post12 := main_~z~0;main_~z~0 := main_#t~post12 - 1;havoc main_#t~post12; 406#L29-2 [2021-08-27 15:18:56,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:18:56,784 INFO L82 PathProgramCache]: Analyzing trace with hash 889571341, now seen corresponding path program 2 times [2021-08-27 15:18:56,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:18:56,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589955733] [2021-08-27 15:18:56,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:18:56,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:18:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:18:56,788 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:18:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:18:56,792 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:18:56,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:18:56,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1958, now seen corresponding path program 1 times [2021-08-27 15:18:56,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:18:56,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424176628] [2021-08-27 15:18:56,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:18:56,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:18:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:18:56,795 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:18:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:18:56,796 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:18:56,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:18:56,799 INFO L82 PathProgramCache]: Analyzing trace with hash 179567794, now seen corresponding path program 3 times [2021-08-27 15:18:56,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:18:56,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890619090] [2021-08-27 15:18:56,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:18:56,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:18:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:18:56,807 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:18:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:18:56,815 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:18:56,842 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:18:56,842 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:18:56,842 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:18:56,843 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:18:56,843 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 15:18:56,843 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:56,843 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:18:56,843 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:18:56,843 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-2.c_Iteration4_Loop [2021-08-27 15:18:56,843 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:18:56,843 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:18:56,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:56,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:56,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:56,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:56,857 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:56,912 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:18:56,912 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 15:18:56,912 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:56,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:56,917 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:56,925 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:18:56,925 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:18:56,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-08-27 15:18:56,941 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:18:56,941 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post12=0} Honda state: {ULTIMATE.start_main_#t~post12=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 15:18:56,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:56,956 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:56,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:56,957 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:56,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-08-27 15:18:56,958 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:18:56,958 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:18:56,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:56,993 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:56,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:56,993 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:56,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-08-27 15:18:56,996 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 15:18:56,996 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:18:57,021 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 15:18:57,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-08-27 15:18:57,023 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:18:57,024 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:18:57,024 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:18:57,024 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:18:57,024 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 15:18:57,024 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:57,024 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:18:57,024 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:18:57,024 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-2.c_Iteration4_Loop [2021-08-27 15:18:57,024 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:18:57,024 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:18:57,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:57,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:57,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:57,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:57,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:18:57,095 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:18:57,095 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 15:18:57,095 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:57,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:57,096 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:57,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-08-27 15:18:57,099 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 15:18:57,105 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:18:57,105 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:18:57,105 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:18:57,105 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:18:57,105 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:18:57,105 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:18:57,105 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:18:57,114 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:18:57,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:57,129 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:57,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:57,129 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:57,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-08-27 15:18:57,131 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 15:18:57,137 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:18:57,137 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:18:57,137 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:18:57,137 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:18:57,138 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:18:57,139 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:18:57,139 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:18:57,140 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:18:57,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:57,157 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:57,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:57,158 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:57,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-08-27 15:18:57,159 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 15:18:57,166 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:18:57,166 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:18:57,166 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:18:57,166 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:18:57,166 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:18:57,167 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:18:57,167 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:18:57,168 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 15:18:57,173 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 15:18:57,173 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-27 15:18:57,173 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:18:57,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:18:57,174 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:18:57,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-08-27 15:18:57,175 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 15:18:57,175 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 15:18:57,176 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 15:18:57,176 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2021-08-27 15:18:57,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:57,192 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 15:18:57,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:18:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:18:57,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:18:57,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:18:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:18:57,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 15:18:57,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:18:57,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-08-27 15:18:57,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:18:57,264 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 [2021-08-27 15:18:57,264 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:18:57,273 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 22 transitions. Complement of second has 4 states. [2021-08-27 15:18:57,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-27 15:18:57,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:18:57,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-08-27 15:18:57,274 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 2 letters. [2021-08-27 15:18:57,275 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:18:57,275 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 8 letters. Loop has 2 letters. [2021-08-27 15:18:57,275 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:18:57,275 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 4 letters. [2021-08-27 15:18:57,275 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:18:57,275 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 22 transitions. [2021-08-27 15:18:57,276 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 15:18:57,276 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2021-08-27 15:18:57,276 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 15:18:57,276 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 15:18:57,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 15:18:57,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:18:57,277 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:18:57,277 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:18:57,277 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:18:57,277 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-08-27 15:18:57,277 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-27 15:18:57,277 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 15:18:57,277 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-27 15:18:57,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 03:18:57 BoogieIcfgContainer [2021-08-27 15:18:57,281 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 15:18:57,282 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 15:18:57,282 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 15:18:57,282 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 15:18:57,282 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:18:54" (3/4) ... [2021-08-27 15:18:57,284 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 15:18:57,284 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 15:18:57,292 INFO L168 Benchmark]: Toolchain (without parser) took 3729.36 ms. Allocated memory was 67.1 MB in the beginning and 107.0 MB in the end (delta: 39.8 MB). Free memory was 48.2 MB in the beginning and 78.7 MB in the end (delta: -30.5 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. [2021-08-27 15:18:57,293 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 67.1 MB. Free memory is still 49.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:18:57,293 INFO L168 Benchmark]: CACSL2BoogieTranslator took 163.83 ms. Allocated memory is still 67.1 MB. Free memory was 48.1 MB in the beginning and 38.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 15:18:57,293 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.36 ms. Allocated memory is still 67.1 MB. Free memory was 38.5 MB in the beginning and 50.7 MB in the end (delta: -12.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 15:18:57,293 INFO L168 Benchmark]: Boogie Preprocessor took 27.95 ms. Allocated memory is still 67.1 MB. Free memory was 50.7 MB in the beginning and 49.7 MB in the end (delta: 912.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:18:57,293 INFO L168 Benchmark]: RCFGBuilder took 259.16 ms. Allocated memory is still 67.1 MB. Free memory was 49.5 MB in the beginning and 37.2 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 15:18:57,294 INFO L168 Benchmark]: BuchiAutomizer took 3230.55 ms. Allocated memory was 67.1 MB in the beginning and 107.0 MB in the end (delta: 39.8 MB). Free memory was 36.9 MB in the beginning and 79.7 MB in the end (delta: -42.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:18:57,294 INFO L168 Benchmark]: Witness Printer took 2.26 ms. Allocated memory is still 107.0 MB. Free memory is still 78.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:18:57,295 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 67.1 MB. Free memory is still 49.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 163.83 ms. Allocated memory is still 67.1 MB. Free memory was 48.1 MB in the beginning and 38.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.36 ms. Allocated memory is still 67.1 MB. Free memory was 38.5 MB in the beginning and 50.7 MB in the end (delta: -12.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.95 ms. Allocated memory is still 67.1 MB. Free memory was 50.7 MB in the beginning and 49.7 MB in the end (delta: 912.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 259.16 ms. Allocated memory is still 67.1 MB. Free memory was 49.5 MB in the beginning and 37.2 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3230.55 ms. Allocated memory was 67.1 MB in the beginning and 107.0 MB in the end (delta: 39.8 MB). Free memory was 36.9 MB in the beginning and 79.7 MB in the end (delta: -42.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 2.26 ms. Allocated memory is still 107.0 MB. Free memory is still 78.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 199 + -2 * x and consists of 5 locations. One deterministic module has affine ranking function 199 + -2 * x and consists of 3 locations. One deterministic module has affine ranking function z and consists of 3 locations. One nondeterministic module has affine ranking function 199 + -2 * x and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.1s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 8.9ms AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 16 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 60 SDtfs, 60 SDslu, 11 SDs, 0 SdLazy, 41 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 35.3ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax100 hnf100 lsp47 ukn100 mio100 lsp100 div444 bol100 ite100 ukn100 eq150 hnf48 smp82 dnf100 smp100 tf106 neg97 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 45ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-08-27 15:18:57,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...