./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/invert_string-3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ae007674 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/invert_string-3.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 ca98535e808a51f7cfa7d21c9d33f259821212a6554e27f29c2bddd9197c0249 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 09:28:07,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 09:28:07,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 09:28:07,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 09:28:07,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 09:28:07,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 09:28:07,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 09:28:07,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 09:28:07,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 09:28:07,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 09:28:07,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 09:28:07,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 09:28:07,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 09:28:07,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 09:28:07,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 09:28:07,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 09:28:07,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 09:28:07,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 09:28:07,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 09:28:07,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 09:28:07,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 09:28:07,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 09:28:07,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 09:28:07,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 09:28:07,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 09:28:07,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 09:28:07,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 09:28:07,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 09:28:07,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 09:28:07,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 09:28:07,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 09:28:07,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 09:28:07,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 09:28:07,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 09:28:07,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 09:28:07,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 09:28:07,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 09:28:07,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 09:28:07,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 09:28:07,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 09:28:07,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 09:28:07,319 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-28 09:28:07,340 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 09:28:07,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 09:28:07,341 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 09:28:07,341 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 09:28:07,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 09:28:07,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 09:28:07,343 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 09:28:07,343 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-28 09:28:07,343 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-28 09:28:07,343 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-28 09:28:07,344 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-28 09:28:07,344 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-28 09:28:07,344 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-28 09:28:07,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 09:28:07,344 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 09:28:07,344 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 09:28:07,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 09:28:07,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 09:28:07,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 09:28:07,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-28 09:28:07,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-28 09:28:07,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-28 09:28:07,345 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 09:28:07,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 09:28:07,346 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-28 09:28:07,346 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 09:28:07,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-28 09:28:07,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 09:28:07,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 09:28:07,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 09:28:07,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 09:28:07,347 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-28 09:28:07,348 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca98535e808a51f7cfa7d21c9d33f259821212a6554e27f29c2bddd9197c0249 [2021-12-28 09:28:07,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 09:28:07,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 09:28:07,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 09:28:07,619 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 09:28:07,620 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 09:28:07,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/invert_string-3.c [2021-12-28 09:28:07,676 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/effff353b/62b52b0ec5f14de9b5d65609506b715f/FLAG9df9c448f [2021-12-28 09:28:08,013 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 09:28:08,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/invert_string-3.c [2021-12-28 09:28:08,018 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/effff353b/62b52b0ec5f14de9b5d65609506b715f/FLAG9df9c448f [2021-12-28 09:28:08,446 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/effff353b/62b52b0ec5f14de9b5d65609506b715f [2021-12-28 09:28:08,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 09:28:08,451 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 09:28:08,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 09:28:08,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 09:28:08,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 09:28:08,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:28:08" (1/1) ... [2021-12-28 09:28:08,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19994c4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:08, skipping insertion in model container [2021-12-28 09:28:08,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:28:08" (1/1) ... [2021-12-28 09:28:08,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 09:28:08,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 09:28:08,550 WARN L230 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/invert_string-3.c[327,340] [2021-12-28 09:28:08,559 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:28:08,564 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 09:28:08,572 WARN L230 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/invert_string-3.c[327,340] [2021-12-28 09:28:08,588 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:28:08,610 INFO L208 MainTranslator]: Completed translation [2021-12-28 09:28:08,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:08 WrapperNode [2021-12-28 09:28:08,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 09:28:08,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 09:28:08,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 09:28:08,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 09:28:08,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:08" (1/1) ... [2021-12-28 09:28:08,635 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:08" (1/1) ... [2021-12-28 09:28:08,656 INFO L137 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2021-12-28 09:28:08,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 09:28:08,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 09:28:08,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 09:28:08,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 09:28:08,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:08" (1/1) ... [2021-12-28 09:28:08,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:08" (1/1) ... [2021-12-28 09:28:08,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:08" (1/1) ... [2021-12-28 09:28:08,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:08" (1/1) ... [2021-12-28 09:28:08,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:08" (1/1) ... [2021-12-28 09:28:08,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:08" (1/1) ... [2021-12-28 09:28:08,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:08" (1/1) ... [2021-12-28 09:28:08,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 09:28:08,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 09:28:08,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 09:28:08,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 09:28:08,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:08" (1/1) ... [2021-12-28 09:28:08,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:08,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:08,712 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) [2021-12-28 09:28:08,720 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 [2021-12-28 09:28:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 09:28:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 09:28:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 09:28:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 09:28:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 09:28:08,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 09:28:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 09:28:08,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 09:28:08,800 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 09:28:08,802 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 09:28:08,962 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 09:28:08,966 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 09:28:08,974 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-28 09:28:08,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:28:08 BoogieIcfgContainer [2021-12-28 09:28:08,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 09:28:08,977 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-28 09:28:08,977 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-28 09:28:08,979 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-28 09:28:08,980 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:28:08,980 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.12 09:28:08" (1/3) ... [2021-12-28 09:28:08,981 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@133129e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:28:08, skipping insertion in model container [2021-12-28 09:28:08,981 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:28:08,981 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:08" (2/3) ... [2021-12-28 09:28:08,981 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@133129e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:28:08, skipping insertion in model container [2021-12-28 09:28:08,981 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:28:08,981 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:28:08" (3/3) ... [2021-12-28 09:28:08,982 INFO L388 chiAutomizerObserver]: Analyzing ICFG invert_string-3.c [2021-12-28 09:28:09,007 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-28 09:28:09,008 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-28 09:28:09,008 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-28 09:28:09,008 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-28 09:28:09,008 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-28 09:28:09,008 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-28 09:28:09,008 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-28 09:28:09,008 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-28 09:28:09,017 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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) [2021-12-28 09:28:09,036 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2021-12-28 09:28:09,037 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:28:09,037 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:28:09,040 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:28:09,041 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-28 09:28:09,041 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-28 09:28:09,041 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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) [2021-12-28 09:28:09,043 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2021-12-28 09:28:09,043 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:28:09,043 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:28:09,044 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:28:09,044 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-28 09:28:09,048 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~post4#1, main_#t~mem7#1, main_#t~post8#1, main_#t~post6#1, main_#t~mem10#1, main_#t~mem11#1, main_#t~post12#1, main_#t~post9#1, main_~max~0#1, main_~#str1~0#1.base, main_~#str1~0#1.offset, main_~#str2~0#1.base, main_~#str2~0#1.offset, main_~i~0#1, main_~j~0#1;main_~max~0#1 := 5;call main_~#str1~0#1.base, main_~#str1~0#1.offset := #Ultimate.allocOnStack((if main_~max~0#1 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0#1 % 4294967296 % 4294967296 else main_~max~0#1 % 4294967296 % 4294967296 - 4294967296));call main_~#str2~0#1.base, main_~#str2~0#1.offset := #Ultimate.allocOnStack((if main_~max~0#1 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0#1 % 4294967296 % 4294967296 else main_~max~0#1 % 4294967296 % 4294967296 - 4294967296));havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := 0; 15#L18-3true [2021-12-28 09:28:09,048 INFO L793 eck$LassoCheckResult]: Loop: 15#L18-3true assume !!(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296);call write~int(main_#t~nondet5#1, main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet5#1; 10#L18-2true main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 15#L18-3true [2021-12-28 09:28:09,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:09,056 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-28 09:28:09,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:28:09,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216332079] [2021-12-28 09:28:09,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:28:09,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:28:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:09,183 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:28:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:09,221 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:28:09,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:09,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2021-12-28 09:28:09,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:28:09,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026647647] [2021-12-28 09:28:09,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:28:09,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:28:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:09,246 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:28:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:09,264 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:28:09,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:09,266 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-12-28 09:28:09,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:28:09,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563592387] [2021-12-28 09:28:09,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:28:09,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:28:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:09,302 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:28:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:09,327 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:28:09,726 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:28:09,726 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:28:09,727 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:28:09,727 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:28:09,727 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:28:09,727 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:09,727 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:28:09,728 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:28:09,728 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-3.c_Iteration1_Lasso [2021-12-28 09:28:09,728 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:28:09,728 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:28:09,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:09,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:09,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:09,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:09,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:09,756 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:09,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:09,760 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:09,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:09,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:10,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:10,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:10,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:10,033 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:10,367 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:28:10,369 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:28:10,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:10,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:10,372 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) [2021-12-28 09:28:10,381 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 [2021-12-28 09:28:10,382 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 [2021-12-28 09:28:10,388 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:28:10,389 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:28:10,389 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:28:10,389 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:28:10,389 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:28:10,391 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:28:10,391 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:28:10,395 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:28:10,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-12-28 09:28:10,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:10,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:10,416 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) [2021-12-28 09:28:10,417 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 [2021-12-28 09:28:10,418 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 [2021-12-28 09:28:10,424 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:28:10,425 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:28:10,425 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:28:10,425 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:28:10,425 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:28:10,425 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:28:10,426 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:28:10,447 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:28:10,465 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 [2021-12-28 09:28:10,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:10,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:10,466 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) [2021-12-28 09:28:10,467 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 [2021-12-28 09:28:10,468 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 [2021-12-28 09:28:10,474 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:28:10,474 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:28:10,474 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:28:10,474 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:28:10,475 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:28:10,475 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:28:10,475 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:28:10,479 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:28:10,496 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 [2021-12-28 09:28:10,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:10,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:10,497 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) [2021-12-28 09:28:10,498 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 [2021-12-28 09:28:10,499 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 [2021-12-28 09:28:10,504 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:28:10,505 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:28:10,505 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:28:10,505 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:28:10,505 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:28:10,505 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:28:10,505 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:28:10,506 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:28:10,521 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 [2021-12-28 09:28:10,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:10,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:10,522 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) [2021-12-28 09:28:10,523 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 [2021-12-28 09:28:10,524 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 [2021-12-28 09:28:10,530 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:28:10,530 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:28:10,530 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:28:10,530 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:28:10,533 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:28:10,533 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:28:10,543 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:28:10,560 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 [2021-12-28 09:28:10,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:10,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:10,561 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) [2021-12-28 09:28:10,562 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 [2021-12-28 09:28:10,563 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 [2021-12-28 09:28:10,569 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:28:10,570 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:28:10,570 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:28:10,570 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:28:10,572 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:28:10,572 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:28:10,584 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:28:10,602 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 [2021-12-28 09:28:10,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:10,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:10,603 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) [2021-12-28 09:28:10,604 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 [2021-12-28 09:28:10,605 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 [2021-12-28 09:28:10,612 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:28:10,612 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:28:10,612 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:28:10,612 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:28:10,612 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:28:10,613 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:28:10,613 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:28:10,627 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:28:10,642 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 [2021-12-28 09:28:10,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:10,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:10,643 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) [2021-12-28 09:28:10,644 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 [2021-12-28 09:28:10,645 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 [2021-12-28 09:28:10,651 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:28:10,651 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:28:10,651 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:28:10,651 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:28:10,651 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:28:10,652 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:28:10,652 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:28:10,655 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:28:10,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-12-28 09:28:10,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:10,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:10,671 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) [2021-12-28 09:28:10,672 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 [2021-12-28 09:28:10,673 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 [2021-12-28 09:28:10,680 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:28:10,680 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:28:10,680 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:28:10,680 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:28:10,680 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:28:10,681 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:28:10,681 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:28:10,682 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:28:10,697 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 [2021-12-28 09:28:10,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:10,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:10,698 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) [2021-12-28 09:28:10,700 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 [2021-12-28 09:28:10,701 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 [2021-12-28 09:28:10,706 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:28:10,706 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:28:10,706 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:28:10,707 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:28:10,708 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:28:10,708 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:28:10,715 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:28:10,730 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 [2021-12-28 09:28:10,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:10,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:10,733 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) [2021-12-28 09:28:10,734 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 [2021-12-28 09:28:10,735 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 [2021-12-28 09:28:10,741 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:28:10,741 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:28:10,741 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:28:10,741 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:28:10,743 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:28:10,743 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:28:10,755 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:28:10,775 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 [2021-12-28 09:28:10,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:10,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:10,776 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) [2021-12-28 09:28:10,777 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 [2021-12-28 09:28:10,779 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 [2021-12-28 09:28:10,785 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:28:10,785 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:28:10,785 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:28:10,785 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:28:10,795 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:28:10,795 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:28:10,812 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:28:10,876 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2021-12-28 09:28:10,876 INFO L444 ModelExtractionUtils]: 12 out of 19 variables were initially zero. Simplification set additionally 3 variables to zero. [2021-12-28 09:28:10,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:10,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:10,907 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) [2021-12-28 09:28:10,908 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 [2021-12-28 09:28:10,909 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:28:10,926 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-12-28 09:28:10,926 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:28:10,927 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~#str1~0#1.offset, v_rep(select #length ULTIMATE.start_main_~#str1~0#1.base)_1) = -1*ULTIMATE.start_main_~i~0#1 - 1*ULTIMATE.start_main_~#str1~0#1.offset + 1*v_rep(select #length ULTIMATE.start_main_~#str1~0#1.base)_1 Supporting invariants [] [2021-12-28 09:28:10,948 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 [2021-12-28 09:28:10,987 INFO L297 tatePredicateManager]: 10 out of 10 supporting invariants were superfluous and have been removed [2021-12-28 09:28:11,024 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 [2021-12-28 09:28:11,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:28:11,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:28:11,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:28:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:28:11,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:28:11,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:28:11,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:28:11,100 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 [2021-12-28 09:28:11,101 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-12-28 09:28:11,130 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 33 states and 47 transitions. Complement of second has 8 states. [2021-12-28 09:28:11,131 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 [2021-12-28 09:28:11,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-12-28 09:28:11,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2021-12-28 09:28:11,135 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 2 letters. Loop has 2 letters. [2021-12-28 09:28:11,135 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:28:11,135 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 4 letters. Loop has 2 letters. [2021-12-28 09:28:11,135 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:28:11,135 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 2 letters. Loop has 4 letters. [2021-12-28 09:28:11,136 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:28:11,136 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 47 transitions. [2021-12-28 09:28:11,138 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-12-28 09:28:11,140 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 14 states and 19 transitions. [2021-12-28 09:28:11,140 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-12-28 09:28:11,140 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-12-28 09:28:11,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2021-12-28 09:28:11,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:28:11,141 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-12-28 09:28:11,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2021-12-28 09:28:11,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-28 09:28:11,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 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) [2021-12-28 09:28:11,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2021-12-28 09:28:11,154 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-12-28 09:28:11,154 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-12-28 09:28:11,155 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-28 09:28:11,155 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 19 transitions. [2021-12-28 09:28:11,155 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-12-28 09:28:11,155 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:28:11,155 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:28:11,156 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-28 09:28:11,156 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-28 09:28:11,156 INFO L791 eck$LassoCheckResult]: Stem: 130#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 131#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~post4#1, main_#t~mem7#1, main_#t~post8#1, main_#t~post6#1, main_#t~mem10#1, main_#t~mem11#1, main_#t~post12#1, main_#t~post9#1, main_~max~0#1, main_~#str1~0#1.base, main_~#str1~0#1.offset, main_~#str2~0#1.base, main_~#str2~0#1.offset, main_~i~0#1, main_~j~0#1;main_~max~0#1 := 5;call main_~#str1~0#1.base, main_~#str1~0#1.offset := #Ultimate.allocOnStack((if main_~max~0#1 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0#1 % 4294967296 % 4294967296 else main_~max~0#1 % 4294967296 % 4294967296 - 4294967296));call main_~#str2~0#1.base, main_~#str2~0#1.offset := #Ultimate.allocOnStack((if main_~max~0#1 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0#1 % 4294967296 % 4294967296 else main_~max~0#1 % 4294967296 % 4294967296 - 4294967296));havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := 0; 134#L18-3 assume !(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296); 143#L18-4 call write~int(0, main_~#str1~0#1.base, main_~#str1~0#1.offset + (if (main_~max~0#1 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0#1 - 1) % 4294967296 % 4294967296 else (main_~max~0#1 - 1) % 4294967296 % 4294967296 - 4294967296), 1);main_~j~0#1 := 0;main_~i~0#1 := (if (main_~max~0#1 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0#1 - 1) % 4294967296 % 4294967296 else (main_~max~0#1 - 1) % 4294967296 % 4294967296 - 4294967296); 142#L26-3 [2021-12-28 09:28:11,156 INFO L793 eck$LassoCheckResult]: Loop: 142#L26-3 assume !!(main_~i~0#1 >= 0);call main_#t~mem7#1 := read~int(main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);call write~int(main_#t~mem7#1, main_~#str2~0#1.base, main_~#str2~0#1.offset + main_~j~0#1, 1);havoc main_#t~mem7#1;main_#t~post8#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 141#L26-2 main_#t~post6#1 := main_~i~0#1;main_~i~0#1 := main_#t~post6#1 - 1;havoc main_#t~post6#1; 142#L26-3 [2021-12-28 09:28:11,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:11,157 INFO L85 PathProgramCache]: Analyzing trace with hash 925707, now seen corresponding path program 1 times [2021-12-28 09:28:11,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:28:11,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53669843] [2021-12-28 09:28:11,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:28:11,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:28:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:28:11,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:28:11,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:28:11,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53669843] [2021-12-28 09:28:11,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53669843] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:28:11,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:28:11,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:28:11,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532337691] [2021-12-28 09:28:11,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:28:11,254 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-28 09:28:11,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:11,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 1 times [2021-12-28 09:28:11,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:28:11,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561561123] [2021-12-28 09:28:11,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:28:11,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:28:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:11,259 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:28:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:11,272 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:28:11,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:28:11,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:28:11,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:28:11,330 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-12-28 09:28:11,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:28:11,348 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2021-12-28 09:28:11,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:28:11,349 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 17 transitions. [2021-12-28 09:28:11,350 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-12-28 09:28:11,350 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 14 states and 16 transitions. [2021-12-28 09:28:11,350 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-12-28 09:28:11,350 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-12-28 09:28:11,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2021-12-28 09:28:11,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:28:11,350 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-12-28 09:28:11,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2021-12-28 09:28:11,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-12-28 09:28:11,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 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) [2021-12-28 09:28:11,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-12-28 09:28:11,351 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-12-28 09:28:11,351 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-12-28 09:28:11,352 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-28 09:28:11,352 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 15 transitions. [2021-12-28 09:28:11,352 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-12-28 09:28:11,352 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:28:11,352 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:28:11,352 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-12-28 09:28:11,352 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-28 09:28:11,352 INFO L791 eck$LassoCheckResult]: Stem: 168#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 169#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~post4#1, main_#t~mem7#1, main_#t~post8#1, main_#t~post6#1, main_#t~mem10#1, main_#t~mem11#1, main_#t~post12#1, main_#t~post9#1, main_~max~0#1, main_~#str1~0#1.base, main_~#str1~0#1.offset, main_~#str2~0#1.base, main_~#str2~0#1.offset, main_~i~0#1, main_~j~0#1;main_~max~0#1 := 5;call main_~#str1~0#1.base, main_~#str1~0#1.offset := #Ultimate.allocOnStack((if main_~max~0#1 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0#1 % 4294967296 % 4294967296 else main_~max~0#1 % 4294967296 % 4294967296 - 4294967296));call main_~#str2~0#1.base, main_~#str2~0#1.offset := #Ultimate.allocOnStack((if main_~max~0#1 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0#1 % 4294967296 % 4294967296 else main_~max~0#1 % 4294967296 % 4294967296 - 4294967296));havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := 0; 176#L18-3 assume !!(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296);call write~int(main_#t~nondet5#1, main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet5#1; 171#L18-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 172#L18-3 assume !(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296); 177#L18-4 call write~int(0, main_~#str1~0#1.base, main_~#str1~0#1.offset + (if (main_~max~0#1 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0#1 - 1) % 4294967296 % 4294967296 else (main_~max~0#1 - 1) % 4294967296 % 4294967296 - 4294967296), 1);main_~j~0#1 := 0;main_~i~0#1 := (if (main_~max~0#1 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0#1 - 1) % 4294967296 % 4294967296 else (main_~max~0#1 - 1) % 4294967296 % 4294967296 - 4294967296); 175#L26-3 [2021-12-28 09:28:11,352 INFO L793 eck$LassoCheckResult]: Loop: 175#L26-3 assume !!(main_~i~0#1 >= 0);call main_#t~mem7#1 := read~int(main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);call write~int(main_#t~mem7#1, main_~#str2~0#1.base, main_~#str2~0#1.offset + main_~j~0#1, 1);havoc main_#t~mem7#1;main_#t~post8#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 174#L26-2 main_#t~post6#1 := main_~i~0#1;main_~i~0#1 := main_#t~post6#1 - 1;havoc main_#t~post6#1; 175#L26-3 [2021-12-28 09:28:11,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:11,353 INFO L85 PathProgramCache]: Analyzing trace with hash 889660429, now seen corresponding path program 1 times [2021-12-28 09:28:11,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:28:11,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605241089] [2021-12-28 09:28:11,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:28:11,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:28:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:28:11,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:28:11,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:28:11,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605241089] [2021-12-28 09:28:11,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605241089] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 09:28:11,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413086368] [2021-12-28 09:28:11,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:28:11,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 09:28:11,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:11,410 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 09:28:11,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-28 09:28:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:28:11,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-28 09:28:11,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:28:11,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 09:28:11,513 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-28 09:28:11,519 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-28 09:28:11,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:28:11,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 09:28:11,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:28:11,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413086368] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 09:28:11,727 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 09:28:11,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2021-12-28 09:28:11,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181315535] [2021-12-28 09:28:11,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 09:28:11,728 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-28 09:28:11,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:11,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 2 times [2021-12-28 09:28:11,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:28:11,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255935131] [2021-12-28 09:28:11,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:28:11,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:28:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:11,732 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:28:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:11,735 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:28:11,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:28:11,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 09:28:11,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-28 09:28:11,796 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. cyclomatic complexity: 5 Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 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) [2021-12-28 09:28:11,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:28:11,905 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-12-28 09:28:11,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 09:28:11,906 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2021-12-28 09:28:11,907 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-12-28 09:28:11,907 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 19 states and 21 transitions. [2021-12-28 09:28:11,907 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-12-28 09:28:11,907 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-12-28 09:28:11,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 21 transitions. [2021-12-28 09:28:11,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:28:11,908 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-28 09:28:11,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 21 transitions. [2021-12-28 09:28:11,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-28 09:28:11,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.105263157894737) internal successors, (21), 18 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) [2021-12-28 09:28:11,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-28 09:28:11,909 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-28 09:28:11,909 INFO L587 BuchiCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-28 09:28:11,909 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-28 09:28:11,909 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 21 transitions. [2021-12-28 09:28:11,909 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-12-28 09:28:11,909 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:28:11,910 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:28:11,910 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 1, 1, 1, 1] [2021-12-28 09:28:11,910 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-28 09:28:11,910 INFO L791 eck$LassoCheckResult]: Stem: 245#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 246#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~post4#1, main_#t~mem7#1, main_#t~post8#1, main_#t~post6#1, main_#t~mem10#1, main_#t~mem11#1, main_#t~post12#1, main_#t~post9#1, main_~max~0#1, main_~#str1~0#1.base, main_~#str1~0#1.offset, main_~#str2~0#1.base, main_~#str2~0#1.offset, main_~i~0#1, main_~j~0#1;main_~max~0#1 := 5;call main_~#str1~0#1.base, main_~#str1~0#1.offset := #Ultimate.allocOnStack((if main_~max~0#1 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0#1 % 4294967296 % 4294967296 else main_~max~0#1 % 4294967296 % 4294967296 - 4294967296));call main_~#str2~0#1.base, main_~#str2~0#1.offset := #Ultimate.allocOnStack((if main_~max~0#1 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0#1 % 4294967296 % 4294967296 else main_~max~0#1 % 4294967296 % 4294967296 - 4294967296));havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := 0; 253#L18-3 assume !!(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296);call write~int(main_#t~nondet5#1, main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet5#1; 247#L18-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 248#L18-3 assume !!(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296);call write~int(main_#t~nondet5#1, main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet5#1; 254#L18-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 260#L18-3 assume !!(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296);call write~int(main_#t~nondet5#1, main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet5#1; 259#L18-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 258#L18-3 assume !!(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296);call write~int(main_#t~nondet5#1, main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet5#1; 257#L18-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 256#L18-3 assume !(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296); 255#L18-4 call write~int(0, main_~#str1~0#1.base, main_~#str1~0#1.offset + (if (main_~max~0#1 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0#1 - 1) % 4294967296 % 4294967296 else (main_~max~0#1 - 1) % 4294967296 % 4294967296 - 4294967296), 1);main_~j~0#1 := 0;main_~i~0#1 := (if (main_~max~0#1 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0#1 - 1) % 4294967296 % 4294967296 else (main_~max~0#1 - 1) % 4294967296 % 4294967296 - 4294967296); 252#L26-3 [2021-12-28 09:28:11,910 INFO L793 eck$LassoCheckResult]: Loop: 252#L26-3 assume !!(main_~i~0#1 >= 0);call main_#t~mem7#1 := read~int(main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);call write~int(main_#t~mem7#1, main_~#str2~0#1.base, main_~#str2~0#1.offset + main_~j~0#1, 1);havoc main_#t~mem7#1;main_#t~post8#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 251#L26-2 main_#t~post6#1 := main_~i~0#1;main_~i~0#1 := main_#t~post6#1 - 1;havoc main_#t~post6#1; 252#L26-3 [2021-12-28 09:28:11,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:11,910 INFO L85 PathProgramCache]: Analyzing trace with hash 833936659, now seen corresponding path program 2 times [2021-12-28 09:28:11,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:28:11,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513617004] [2021-12-28 09:28:11,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:28:11,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:28:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:28:12,005 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:28:12,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:28:12,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513617004] [2021-12-28 09:28:12,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513617004] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 09:28:12,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076156800] [2021-12-28 09:28:12,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 09:28:12,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 09:28:12,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:12,008 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 09:28:12,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-28 09:28:12,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 09:28:12,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 09:28:12,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-28 09:28:12,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:28:12,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 09:28:12,101 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-28 09:28:12,101 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-12-28 09:28:12,270 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:28:12,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 09:28:12,684 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:28:12,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076156800] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 09:28:12,684 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 09:28:12,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2021-12-28 09:28:12,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244722266] [2021-12-28 09:28:12,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 09:28:12,685 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-28 09:28:12,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:12,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 3 times [2021-12-28 09:28:12,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:28:12,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114626761] [2021-12-28 09:28:12,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:28:12,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:28:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:12,690 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:28:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:12,692 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:28:12,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:28:12,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 09:28:12,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-12-28 09:28:12,751 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. cyclomatic complexity: 5 Second operand has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 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) [2021-12-28 09:28:12,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:28:12,883 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-12-28 09:28:12,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 09:28:12,884 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 24 transitions. [2021-12-28 09:28:12,885 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-12-28 09:28:12,885 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 22 states and 24 transitions. [2021-12-28 09:28:12,885 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-12-28 09:28:12,885 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-12-28 09:28:12,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 24 transitions. [2021-12-28 09:28:12,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:28:12,885 INFO L681 BuchiCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-12-28 09:28:12,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 24 transitions. [2021-12-28 09:28:12,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2021-12-28 09:28:12,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 20 states have internal predecessors, (23), 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) [2021-12-28 09:28:12,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-12-28 09:28:12,887 INFO L704 BuchiCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-12-28 09:28:12,887 INFO L587 BuchiCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-12-28 09:28:12,887 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-28 09:28:12,887 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 23 transitions. [2021-12-28 09:28:12,887 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-12-28 09:28:12,887 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:28:12,887 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:28:12,888 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 1, 1, 1, 1] [2021-12-28 09:28:12,888 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-28 09:28:12,888 INFO L791 eck$LassoCheckResult]: Stem: 373#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 374#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~post4#1, main_#t~mem7#1, main_#t~post8#1, main_#t~post6#1, main_#t~mem10#1, main_#t~mem11#1, main_#t~post12#1, main_#t~post9#1, main_~max~0#1, main_~#str1~0#1.base, main_~#str1~0#1.offset, main_~#str2~0#1.base, main_~#str2~0#1.offset, main_~i~0#1, main_~j~0#1;main_~max~0#1 := 5;call main_~#str1~0#1.base, main_~#str1~0#1.offset := #Ultimate.allocOnStack((if main_~max~0#1 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0#1 % 4294967296 % 4294967296 else main_~max~0#1 % 4294967296 % 4294967296 - 4294967296));call main_~#str2~0#1.base, main_~#str2~0#1.offset := #Ultimate.allocOnStack((if main_~max~0#1 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0#1 % 4294967296 % 4294967296 else main_~max~0#1 % 4294967296 % 4294967296 - 4294967296));havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := 0; 381#L18-3 assume !!(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296);call write~int(main_#t~nondet5#1, main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet5#1; 382#L18-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 383#L18-3 assume !!(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296);call write~int(main_#t~nondet5#1, main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet5#1; 375#L18-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 376#L18-3 assume !!(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296);call write~int(main_#t~nondet5#1, main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet5#1; 390#L18-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 389#L18-3 assume !!(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296);call write~int(main_#t~nondet5#1, main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet5#1; 388#L18-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 387#L18-3 assume !!(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296);call write~int(main_#t~nondet5#1, main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet5#1; 386#L18-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 385#L18-3 assume !(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296); 384#L18-4 call write~int(0, main_~#str1~0#1.base, main_~#str1~0#1.offset + (if (main_~max~0#1 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0#1 - 1) % 4294967296 % 4294967296 else (main_~max~0#1 - 1) % 4294967296 % 4294967296 - 4294967296), 1);main_~j~0#1 := 0;main_~i~0#1 := (if (main_~max~0#1 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0#1 - 1) % 4294967296 % 4294967296 else (main_~max~0#1 - 1) % 4294967296 % 4294967296 - 4294967296); 380#L26-3 [2021-12-28 09:28:12,888 INFO L793 eck$LassoCheckResult]: Loop: 380#L26-3 assume !!(main_~i~0#1 >= 0);call main_#t~mem7#1 := read~int(main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);call write~int(main_#t~mem7#1, main_~#str2~0#1.base, main_~#str2~0#1.offset + main_~j~0#1, 1);havoc main_#t~mem7#1;main_#t~post8#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 379#L26-2 main_#t~post6#1 := main_~i~0#1;main_~i~0#1 := main_#t~post6#1 - 1;havoc main_#t~post6#1; 380#L26-3 [2021-12-28 09:28:12,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:12,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1745699051, now seen corresponding path program 3 times [2021-12-28 09:28:12,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:28:12,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185677862] [2021-12-28 09:28:12,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:28:12,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:28:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:12,904 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:28:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:12,919 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:28:12,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:12,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 4 times [2021-12-28 09:28:12,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:28:12,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688819929] [2021-12-28 09:28:12,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:28:12,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:28:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:12,923 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:28:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:12,925 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:28:12,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:12,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1715425495, now seen corresponding path program 1 times [2021-12-28 09:28:12,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:28:12,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612269072] [2021-12-28 09:28:12,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:28:12,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:28:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:12,945 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:28:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:12,972 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:28:14,817 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:28:14,817 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:28:14,817 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:28:14,817 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:28:14,817 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:28:14,817 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:14,817 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:28:14,817 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:28:14,817 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-3.c_Iteration5_Lasso [2021-12-28 09:28:14,817 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:28:14,817 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:28:14,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:14,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:15,278 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.IllegalArgumentException at de.uni_freiburg.informatik.ultimate.util.datastructures.ScopedHashMap.put(ScopedHashMap.java:331) at java.base/java.util.AbstractMap.putAll(AbstractMap.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.PureSubstitution.(PureSubstitution.java:81) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.Substitution.(Substitution.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.Substitution.apply(Substitution.java:59) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.replaceMapReads(MapEliminator.java:518) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.getRewrittenTransFormula(MapEliminator.java:342) at de.uni_freiburg.informatik.ultimate.lassoranker.preprocessors.MapEliminationLassoPreprocessor.process(MapEliminationLassoPreprocessor.java:111) at de.uni_freiburg.informatik.ultimate.lassoranker.variables.LassoBuilder.applyPreprocessor(LassoBuilder.java:154) at de.uni_freiburg.informatik.ultimate.lassoranker.variables.LassoBuilder.preprocess(LassoBuilder.java:262) at de.uni_freiburg.informatik.ultimate.lassoranker.LassoAnalysis.preprocess(LassoAnalysis.java:280) at de.uni_freiburg.informatik.ultimate.lassoranker.LassoAnalysis.(LassoAnalysis.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.synthesize(LassoCheck.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkLassoTermination(LassoCheck.java:953) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:862) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:252) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:457) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:397) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-28 09:28:15,280 INFO L158 Benchmark]: Toolchain (without parser) took 6828.86ms. Allocated memory was 69.2MB in the beginning and 109.1MB in the end (delta: 39.8MB). Free memory was 51.2MB in the beginning and 83.6MB in the end (delta: -32.4MB). Peak memory consumption was 65.4MB. Max. memory is 16.1GB. [2021-12-28 09:28:15,280 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 69.2MB. Free memory was 50.2MB in the beginning and 50.2MB in the end (delta: 36.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:28:15,280 INFO L158 Benchmark]: CACSL2BoogieTranslator took 165.14ms. Allocated memory is still 69.2MB. Free memory was 51.0MB in the beginning and 53.1MB in the end (delta: -2.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-28 09:28:15,280 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.48ms. Allocated memory is still 69.2MB. Free memory was 53.1MB in the beginning and 51.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:28:15,280 INFO L158 Benchmark]: Boogie Preprocessor took 31.58ms. Allocated memory is still 69.2MB. Free memory was 51.5MB in the beginning and 50.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:28:15,281 INFO L158 Benchmark]: RCFGBuilder took 286.81ms. Allocated memory is still 69.2MB. Free memory was 50.3MB in the beginning and 39.7MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-28 09:28:15,281 INFO L158 Benchmark]: BuchiAutomizer took 6301.79ms. Allocated memory was 69.2MB in the beginning and 109.1MB in the end (delta: 39.8MB). Free memory was 39.7MB in the beginning and 83.6MB in the end (delta: -43.9MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. [2021-12-28 09:28:15,282 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 69.2MB. Free memory was 50.2MB in the beginning and 50.2MB in the end (delta: 36.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 165.14ms. Allocated memory is still 69.2MB. Free memory was 51.0MB in the beginning and 53.1MB in the end (delta: -2.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.48ms. Allocated memory is still 69.2MB. Free memory was 53.1MB in the beginning and 51.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.58ms. Allocated memory is still 69.2MB. Free memory was 51.5MB in the beginning and 50.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 286.81ms. Allocated memory is still 69.2MB. Free memory was 50.3MB in the beginning and 39.7MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 6301.79ms. Allocated memory was 69.2MB in the beginning and 109.1MB in the end (delta: 39.8MB). Free memory was 39.7MB in the beginning and 83.6MB in the end (delta: -43.9MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: IllegalArgumentException: null de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: IllegalArgumentException: null: de.uni_freiburg.informatik.ultimate.util.datastructures.ScopedHashMap.put(ScopedHashMap.java:331) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-28 09:28:15,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-28 09:28:15,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-28 09:28:15,703 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*32bit*_Bitvector*.epf No suitable settings file found using Termination*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: IllegalArgumentException: null