./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-15/array17_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ff03de63 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/termination-15/array17_alloca.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-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 64bit --witnessprinter.graph.data.programhash c64c4370fd8b6e918e28e5e9f3a24e52a6875ae7268f4c7e3f97f19ee293047c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 22:04:45,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 22:04:45,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 22:04:45,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 22:04:45,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 22:04:45,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 22:04:45,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 22:04:45,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 22:04:45,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 22:04:45,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 22:04:45,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 22:04:45,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 22:04:45,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 22:04:45,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 22:04:45,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 22:04:45,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 22:04:45,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 22:04:45,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 22:04:45,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 22:04:45,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 22:04:45,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 22:04:45,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 22:04:45,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 22:04:45,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 22:04:45,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 22:04:45,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 22:04:45,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 22:04:45,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 22:04:45,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 22:04:45,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 22:04:45,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 22:04:45,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 22:04:45,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 22:04:45,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 22:04:45,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 22:04:45,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 22:04:45,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 22:04:45,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 22:04:45,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 22:04:45,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 22:04:45,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 22:04:45,426 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-21 22:04:45,438 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 22:04:45,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 22:04:45,438 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 22:04:45,438 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 22:04:45,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 22:04:45,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 22:04:45,451 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 22:04:45,451 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-21 22:04:45,451 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-21 22:04:45,451 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-21 22:04:45,452 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-21 22:04:45,452 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-21 22:04:45,452 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-21 22:04:45,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 22:04:45,452 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 22:04:45,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 22:04:45,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 22:04:45,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-21 22:04:45,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-21 22:04:45,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-21 22:04:45,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 22:04:45,453 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-21 22:04:45,454 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 22:04:45,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-21 22:04:45,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 22:04:45,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 22:04:45,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 22:04:45,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 22:04:45,455 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 22:04:45,456 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-21 22:04:45,456 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c64c4370fd8b6e918e28e5e9f3a24e52a6875ae7268f4c7e3f97f19ee293047c [2021-12-21 22:04:45,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 22:04:45,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 22:04:45,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 22:04:45,684 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 22:04:45,686 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 22:04:45,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/array17_alloca.i [2021-12-21 22:04:45,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4930a0903/3ae7e8b6594d4d8eaf070de4e44077c9/FLAGfd1b2de01 [2021-12-21 22:04:46,151 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 22:04:46,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/array17_alloca.i [2021-12-21 22:04:46,164 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4930a0903/3ae7e8b6594d4d8eaf070de4e44077c9/FLAGfd1b2de01 [2021-12-21 22:04:46,520 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4930a0903/3ae7e8b6594d4d8eaf070de4e44077c9 [2021-12-21 22:04:46,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 22:04:46,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 22:04:46,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 22:04:46,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 22:04:46,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 22:04:46,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:04:46" (1/1) ... [2021-12-21 22:04:46,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74b201e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:46, skipping insertion in model container [2021-12-21 22:04:46,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:04:46" (1/1) ... [2021-12-21 22:04:46,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 22:04:46,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 22:04:46,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:04:46,787 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 22:04:46,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:04:46,864 INFO L208 MainTranslator]: Completed translation [2021-12-21 22:04:46,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:46 WrapperNode [2021-12-21 22:04:46,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 22:04:46,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 22:04:46,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 22:04:46,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 22:04:46,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:46" (1/1) ... [2021-12-21 22:04:46,893 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:46" (1/1) ... [2021-12-21 22:04:46,911 INFO L137 Inliner]: procedures = 151, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 64 [2021-12-21 22:04:46,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 22:04:46,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 22:04:46,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 22:04:46,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 22:04:46,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:46" (1/1) ... [2021-12-21 22:04:46,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:46" (1/1) ... [2021-12-21 22:04:46,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:46" (1/1) ... [2021-12-21 22:04:46,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:46" (1/1) ... [2021-12-21 22:04:46,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:46" (1/1) ... [2021-12-21 22:04:46,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:46" (1/1) ... [2021-12-21 22:04:46,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:46" (1/1) ... [2021-12-21 22:04:46,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 22:04:46,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 22:04:46,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 22:04:46,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 22:04:46,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:46" (1/1) ... [2021-12-21 22:04:46,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:46,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:46,961 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) [2021-12-21 22:04:46,968 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 [2021-12-21 22:04:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 22:04:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 22:04:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 22:04:46,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 22:04:46,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 22:04:46,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 22:04:47,038 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 22:04:47,039 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 22:04:47,184 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 22:04:47,209 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 22:04:47,210 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-21 22:04:47,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:04:47 BoogieIcfgContainer [2021-12-21 22:04:47,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 22:04:47,211 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-21 22:04:47,212 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-21 22:04:47,214 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-21 22:04:47,214 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:04:47,214 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.12 10:04:46" (1/3) ... [2021-12-21 22:04:47,215 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5467c23e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:04:47, skipping insertion in model container [2021-12-21 22:04:47,215 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:04:47,215 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:46" (2/3) ... [2021-12-21 22:04:47,215 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5467c23e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:04:47, skipping insertion in model container [2021-12-21 22:04:47,215 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:04:47,215 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:04:47" (3/3) ... [2021-12-21 22:04:47,216 INFO L388 chiAutomizerObserver]: Analyzing ICFG array17_alloca.i [2021-12-21 22:04:47,253 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-21 22:04:47,253 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-21 22:04:47,253 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-21 22:04:47,254 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-21 22:04:47,254 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-21 22:04:47,254 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-21 22:04:47,254 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-21 22:04:47,254 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-21 22:04:47,266 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 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) [2021-12-21 22:04:47,282 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-12-21 22:04:47,283 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:04:47,283 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:04:47,287 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-12-21 22:04:47,287 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-21 22:04:47,287 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-21 22:04:47,288 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 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) [2021-12-21 22:04:47,289 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-12-21 22:04:47,290 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:04:47,290 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:04:47,290 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-12-21 22:04:47,290 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-21 22:04:47,295 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; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet207#1, main_#t~post209#1, main_#t~post208#1, main_#t~mem210#1, main_#t~mem211#1, main_#t~post212#1, main_#t~post213#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset, main_~value~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 14#L367true assume !(main_~length~0#1 < 1); 12#L367-2true assume !!(main_~length~0#1 <= 536870911);call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 15#L371true assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~value~0#1 := main_#t~nondet207#1;havoc main_#t~nondet207#1; 17#L373true assume !!(main_~value~0#1 <= 1073741823);main_~i~0#1 := 0; 5#L375-3true [2021-12-21 22:04:47,296 INFO L793 eck$LassoCheckResult]: Loop: 5#L375-3true assume !!(main_~i~0#1 < main_~length~0#1);main_#t~post209#1 := main_~value~0#1;main_~value~0#1 := 1 + main_#t~post209#1;call write~int(main_#t~post209#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~post209#1; 10#L375-2true main_#t~post208#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post208#1;havoc main_#t~post208#1; 5#L375-3true [2021-12-21 22:04:47,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:04:47,302 INFO L85 PathProgramCache]: Analyzing trace with hash 889572334, now seen corresponding path program 1 times [2021-12-21 22:04:47,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:04:47,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159227021] [2021-12-21 22:04:47,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:47,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:04:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:47,395 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:04:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:47,426 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:04:47,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:04:47,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1955, now seen corresponding path program 1 times [2021-12-21 22:04:47,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:04:47,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256991622] [2021-12-21 22:04:47,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:47,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:04:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:47,447 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:04:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:47,465 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:04:47,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:04:47,467 INFO L85 PathProgramCache]: Analyzing trace with hash 180522064, now seen corresponding path program 1 times [2021-12-21 22:04:47,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:04:47,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584131221] [2021-12-21 22:04:47,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:47,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:04:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:47,491 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:04:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:47,507 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:04:47,757 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:04:47,758 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:04:47,758 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:04:47,758 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:04:47,758 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 22:04:47,758 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:47,758 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:04:47,759 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:04:47,759 INFO L133 ssoRankerPreferences]: Filename of dumped script: array17_alloca.i_Iteration1_Lasso [2021-12-21 22:04:47,759 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:04:47,759 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:04:47,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:04:47,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:04:47,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:04:47,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:04:47,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:04:47,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:04:47,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:04:47,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:04:47,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:04:47,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:04:47,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:04:47,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:04:47,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:04:48,110 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:04:48,118 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 22:04:48,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:48,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:48,122 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) [2021-12-21 22:04:48,122 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 [2021-12-21 22:04:48,160 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 [2021-12-21 22:04:48,166 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:04:48,167 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:04:48,167 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:04:48,167 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:04:48,167 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:04:48,169 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:04:48,169 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:04:48,172 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:04:48,191 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 [2021-12-21 22:04:48,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:48,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:48,194 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) [2021-12-21 22:04:48,195 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 [2021-12-21 22:04:48,196 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 [2021-12-21 22:04:48,203 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:04:48,203 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:04:48,203 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:04:48,203 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:04:48,207 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-21 22:04:48,207 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-21 22:04:48,222 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:04:48,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-21 22:04:48,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:48,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:48,258 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) [2021-12-21 22:04:48,259 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 [2021-12-21 22:04:48,260 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 [2021-12-21 22:04:48,266 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:04:48,266 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:04:48,267 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:04:48,267 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:04:48,267 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:04:48,267 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:04:48,267 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:04:48,273 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:04:48,292 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 [2021-12-21 22:04:48,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:48,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:48,295 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) [2021-12-21 22:04:48,300 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 [2021-12-21 22:04:48,300 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 [2021-12-21 22:04:48,307 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:04:48,307 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:04:48,307 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:04:48,308 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:04:48,308 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:04:48,308 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:04:48,308 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:04:48,323 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:04:48,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-12-21 22:04:48,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:48,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:48,341 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) [2021-12-21 22:04:48,344 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 [2021-12-21 22:04:48,344 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 [2021-12-21 22:04:48,350 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:04:48,351 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:04:48,351 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:04:48,351 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:04:48,351 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:04:48,351 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:04:48,351 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:04:48,359 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:04:48,377 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 [2021-12-21 22:04:48,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:48,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:48,379 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) [2021-12-21 22:04:48,380 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 [2021-12-21 22:04:48,381 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 [2021-12-21 22:04:48,388 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:04:48,388 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:04:48,388 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:04:48,388 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:04:48,388 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:04:48,389 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:04:48,389 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:04:48,398 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:04:48,413 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 [2021-12-21 22:04:48,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:48,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:48,415 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) [2021-12-21 22:04:48,415 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 [2021-12-21 22:04:48,416 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 [2021-12-21 22:04:48,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:04:48,423 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:04:48,423 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:04:48,423 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:04:48,423 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:04:48,423 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:04:48,423 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:04:48,431 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:04:48,446 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 [2021-12-21 22:04:48,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:48,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:48,448 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) [2021-12-21 22:04:48,449 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 [2021-12-21 22:04:48,451 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 [2021-12-21 22:04:48,460 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:04:48,460 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:04:48,460 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:04:48,460 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:04:48,460 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:04:48,461 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:04:48,461 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:04:48,474 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:04:48,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-21 22:04:48,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:48,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:48,491 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) [2021-12-21 22:04:48,491 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 [2021-12-21 22:04:48,493 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 [2021-12-21 22:04:48,498 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:04:48,499 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:04:48,499 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:04:48,499 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:04:48,499 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:04:48,499 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:04:48,499 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:04:48,510 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:04:48,526 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 [2021-12-21 22:04:48,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:48,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:48,528 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) [2021-12-21 22:04:48,529 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 [2021-12-21 22:04:48,530 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 [2021-12-21 22:04:48,536 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:04:48,536 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:04:48,536 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:04:48,536 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:04:48,536 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:04:48,537 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:04:48,537 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:04:48,539 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:04:48,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2021-12-21 22:04:48,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:48,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:48,556 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) [2021-12-21 22:04:48,556 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 [2021-12-21 22:04:48,558 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 [2021-12-21 22:04:48,565 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:04:48,565 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:04:48,565 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:04:48,565 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:04:48,567 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-21 22:04:48,567 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-21 22:04:48,581 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:04:48,596 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 [2021-12-21 22:04:48,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:48,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:48,598 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) [2021-12-21 22:04:48,602 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 [2021-12-21 22:04:48,603 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 [2021-12-21 22:04:48,608 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:04:48,609 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:04:48,609 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:04:48,609 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:04:48,609 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:04:48,609 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:04:48,609 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:04:48,615 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:04:48,630 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 [2021-12-21 22:04:48,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:48,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:48,631 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) [2021-12-21 22:04:48,632 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 [2021-12-21 22:04:48,633 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 [2021-12-21 22:04:48,639 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:04:48,639 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:04:48,639 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:04:48,639 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:04:48,641 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-21 22:04:48,641 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-21 22:04:48,661 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:04:48,677 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 [2021-12-21 22:04:48,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:48,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:48,679 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:04:48,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-21 22:04:48,681 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 [2021-12-21 22:04:48,688 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:04:48,688 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:04:48,688 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:04:48,688 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:04:48,691 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-21 22:04:48,691 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-21 22:04:48,699 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:04:48,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-12-21 22:04:48,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:48,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:48,716 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:04:48,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-21 22:04:48,717 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 [2021-12-21 22:04:48,723 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:04:48,723 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:04:48,723 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:04:48,723 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:04:48,728 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-21 22:04:48,728 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-21 22:04:48,744 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 22:04:48,792 INFO L443 ModelExtractionUtils]: Simplification made 19 calls to the SMT solver. [2021-12-21 22:04:48,793 INFO L444 ModelExtractionUtils]: 1 out of 22 variables were initially zero. Simplification set additionally 18 variables to zero. [2021-12-21 22:04:48,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:48,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:48,804 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:04:48,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-21 22:04:48,839 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 22:04:48,864 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-12-21 22:04:48,864 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 22:04:48,865 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~length~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~length~0#1 Supporting invariants [] [2021-12-21 22:04:48,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-12-21 22:04:48,907 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2021-12-21 22:04:48,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:04:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:04:48,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:04:48,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:04:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:04:48,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 22:04:48,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:04:48,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:04:49,015 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 [2021-12-21 22:04:49,016 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 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 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:04:49,061 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 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 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 34 states and 49 transitions. Complement of second has 7 states. [2021-12-21 22:04:49,062 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 [2021-12-21 22:04:49,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:04:49,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 34 transitions. [2021-12-21 22:04:49,067 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 34 transitions. Stem has 6 letters. Loop has 2 letters. [2021-12-21 22:04:49,068 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:04:49,068 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 34 transitions. Stem has 8 letters. Loop has 2 letters. [2021-12-21 22:04:49,068 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:04:49,068 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 34 transitions. Stem has 6 letters. Loop has 4 letters. [2021-12-21 22:04:49,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:04:49,069 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 49 transitions. [2021-12-21 22:04:49,073 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-21 22:04:49,076 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 12 states and 16 transitions. [2021-12-21 22:04:49,077 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-12-21 22:04:49,077 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-12-21 22:04:49,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2021-12-21 22:04:49,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:04:49,078 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-12-21 22:04:49,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2021-12-21 22:04:49,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-12-21 22:04:49,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 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) [2021-12-21 22:04:49,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2021-12-21 22:04:49,094 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-12-21 22:04:49,094 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-12-21 22:04:49,094 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-21 22:04:49,094 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2021-12-21 22:04:49,096 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-21 22:04:49,096 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:04:49,096 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:04:49,096 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:04:49,096 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-21 22:04:49,097 INFO L791 eck$LassoCheckResult]: Stem: 118#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 119#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet207#1, main_#t~post209#1, main_#t~post208#1, main_#t~mem210#1, main_#t~mem211#1, main_#t~post212#1, main_#t~post213#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset, main_~value~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 122#L367 assume !(main_~length~0#1 < 1); 120#L367-2 assume !!(main_~length~0#1 <= 536870911);call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 121#L371 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~value~0#1 := main_#t~nondet207#1;havoc main_#t~nondet207#1; 123#L373 assume !!(main_~value~0#1 <= 1073741823);main_~i~0#1 := 0; 114#L375-3 assume !(main_~i~0#1 < main_~length~0#1); 115#L375-4 main_~j~0#1 := 1; 112#L380-2 [2021-12-21 22:04:49,097 INFO L793 eck$LassoCheckResult]: Loop: 112#L380-2 assume !!(0 < main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4);call main_#t~mem211#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * (main_~j~0#1 - 1), 4); 113#L380 assume main_#t~mem210#1 > main_#t~mem211#1;havoc main_#t~mem210#1;havoc main_#t~mem211#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 112#L380-2 [2021-12-21 22:04:49,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:04:49,098 INFO L85 PathProgramCache]: Analyzing trace with hash 180522006, now seen corresponding path program 1 times [2021-12-21 22:04:49,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:04:49,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647230457] [2021-12-21 22:04:49,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:49,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:04:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:04:49,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:04:49,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:04:49,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647230457] [2021-12-21 22:04:49,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647230457] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 22:04:49,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 22:04:49,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 22:04:49,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855732507] [2021-12-21 22:04:49,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 22:04:49,145 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-21 22:04:49,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:04:49,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2436, now seen corresponding path program 1 times [2021-12-21 22:04:49,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:04:49,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675787612] [2021-12-21 22:04:49,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:49,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:04:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:49,153 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:04:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:49,157 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:04:49,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:04:49,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 22:04:49,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-21 22:04:49,245 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. cyclomatic complexity: 6 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:04:49,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-12-21 22:04:49,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:04:49,268 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2021-12-21 22:04:49,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 22:04:49,269 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2021-12-21 22:04:49,270 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-21 22:04:49,272 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 16 transitions. [2021-12-21 22:04:49,272 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-12-21 22:04:49,272 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-12-21 22:04:49,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2021-12-21 22:04:49,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:04:49,273 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-12-21 22:04:49,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2021-12-21 22:04:49,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-12-21 22:04:49,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:04:49,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2021-12-21 22:04:49,275 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-12-21 22:04:49,275 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-12-21 22:04:49,275 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-21 22:04:49,275 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2021-12-21 22:04:49,276 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-21 22:04:49,276 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:04:49,276 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:04:49,277 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:04:49,277 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-21 22:04:49,278 INFO L791 eck$LassoCheckResult]: Stem: 146#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 147#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet207#1, main_#t~post209#1, main_#t~post208#1, main_#t~mem210#1, main_#t~mem211#1, main_#t~post212#1, main_#t~post213#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset, main_~value~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 154#L367 assume !(main_~length~0#1 < 1); 148#L367-2 assume !!(main_~length~0#1 <= 536870911);call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 149#L371 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~value~0#1 := main_#t~nondet207#1;havoc main_#t~nondet207#1; 155#L373 assume !!(main_~value~0#1 <= 1073741823);main_~i~0#1 := 0; 150#L375-3 assume !!(main_~i~0#1 < main_~length~0#1);main_#t~post209#1 := main_~value~0#1;main_~value~0#1 := 1 + main_#t~post209#1;call write~int(main_#t~post209#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~post209#1; 151#L375-2 main_#t~post208#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post208#1;havoc main_#t~post208#1; 152#L375-3 assume !(main_~i~0#1 < main_~length~0#1); 153#L375-4 main_~j~0#1 := 1; 144#L380-2 [2021-12-21 22:04:49,278 INFO L793 eck$LassoCheckResult]: Loop: 144#L380-2 assume !!(0 < main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4);call main_#t~mem211#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * (main_~j~0#1 - 1), 4); 145#L380 assume main_#t~mem210#1 > main_#t~mem211#1;havoc main_#t~mem210#1;havoc main_#t~mem211#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 144#L380-2 [2021-12-21 22:04:49,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:04:49,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1683012600, now seen corresponding path program 1 times [2021-12-21 22:04:49,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:04:49,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898279635] [2021-12-21 22:04:49,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:49,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:04:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:49,306 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:04:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:49,318 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:04:49,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:04:49,318 INFO L85 PathProgramCache]: Analyzing trace with hash 2436, now seen corresponding path program 2 times [2021-12-21 22:04:49,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:04:49,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885585589] [2021-12-21 22:04:49,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:49,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:04:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:49,323 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:04:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:49,333 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:04:49,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:04:49,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1827560517, now seen corresponding path program 1 times [2021-12-21 22:04:49,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:04:49,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257304905] [2021-12-21 22:04:49,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:49,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:04:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:04:49,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:04:49,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:04:49,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257304905] [2021-12-21 22:04:49,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257304905] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 22:04:49,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153244546] [2021-12-21 22:04:49,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:49,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 22:04:49,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:49,384 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 22:04:49,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-21 22:04:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:04:49,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 22:04:49,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:04:49,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:04:49,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 22:04:49,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:04:49,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153244546] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 22:04:49,487 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 22:04:49,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2021-12-21 22:04:49,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904082201] [2021-12-21 22:04:49,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 22:04:49,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:04:49,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 22:04:49,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-21 22:04:49,537 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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) [2021-12-21 22:04:49,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:04:49,581 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2021-12-21 22:04:49,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 22:04:49,582 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 28 transitions. [2021-12-21 22:04:49,582 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-21 22:04:49,583 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 15 states and 17 transitions. [2021-12-21 22:04:49,583 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-12-21 22:04:49,583 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-12-21 22:04:49,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 17 transitions. [2021-12-21 22:04:49,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:04:49,583 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-12-21 22:04:49,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 17 transitions. [2021-12-21 22:04:49,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-12-21 22:04:49,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 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) [2021-12-21 22:04:49,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-12-21 22:04:49,585 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-12-21 22:04:49,585 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-12-21 22:04:49,585 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-21 22:04:49,585 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 16 transitions. [2021-12-21 22:04:49,585 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-21 22:04:49,586 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:04:49,586 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:04:49,586 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:04:49,586 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-21 22:04:49,586 INFO L791 eck$LassoCheckResult]: Stem: 272#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 273#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet207#1, main_#t~post209#1, main_#t~post208#1, main_#t~mem210#1, main_#t~mem211#1, main_#t~post212#1, main_#t~post213#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset, main_~value~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 276#L367 assume !(main_~length~0#1 < 1); 274#L367-2 assume !!(main_~length~0#1 <= 536870911);call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 275#L371 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~value~0#1 := main_#t~nondet207#1;havoc main_#t~nondet207#1; 277#L373 assume !!(main_~value~0#1 <= 1073741823);main_~i~0#1 := 0; 268#L375-3 assume !!(main_~i~0#1 < main_~length~0#1);main_#t~post209#1 := main_~value~0#1;main_~value~0#1 := 1 + main_#t~post209#1;call write~int(main_#t~post209#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~post209#1; 269#L375-2 main_#t~post208#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post208#1;havoc main_#t~post208#1; 270#L375-3 assume !!(main_~i~0#1 < main_~length~0#1);main_#t~post209#1 := main_~value~0#1;main_~value~0#1 := 1 + main_#t~post209#1;call write~int(main_#t~post209#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~post209#1; 271#L375-2 main_#t~post208#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post208#1;havoc main_#t~post208#1; 279#L375-3 assume !(main_~i~0#1 < main_~length~0#1); 278#L375-4 main_~j~0#1 := 1; 266#L380-2 [2021-12-21 22:04:49,586 INFO L793 eck$LassoCheckResult]: Loop: 266#L380-2 assume !!(0 < main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4);call main_#t~mem211#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * (main_~j~0#1 - 1), 4); 267#L380 assume main_#t~mem210#1 > main_#t~mem211#1;havoc main_#t~mem210#1;havoc main_#t~mem211#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 266#L380-2 [2021-12-21 22:04:49,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:04:49,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1827505318, now seen corresponding path program 2 times [2021-12-21 22:04:49,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:04:49,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535035661] [2021-12-21 22:04:49,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:49,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:04:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:49,596 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:04:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:49,604 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:04:49,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:04:49,605 INFO L85 PathProgramCache]: Analyzing trace with hash 2436, now seen corresponding path program 3 times [2021-12-21 22:04:49,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:04:49,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550622866] [2021-12-21 22:04:49,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:49,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:04:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:49,609 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:04:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:49,612 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:04:49,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:04:49,612 INFO L85 PathProgramCache]: Analyzing trace with hash 409014941, now seen corresponding path program 2 times [2021-12-21 22:04:49,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:04:49,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360811375] [2021-12-21 22:04:49,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:49,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:04:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:49,630 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:04:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:49,649 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:04:49,911 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:04:49,911 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:04:49,911 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:04:49,911 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:04:49,911 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 22:04:49,911 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:49,911 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:04:49,912 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:04:49,912 INFO L133 ssoRankerPreferences]: Filename of dumped script: array17_alloca.i_Iteration4_Lasso [2021-12-21 22:04:49,912 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:04:49,912 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:04:49,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:04:49,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:04:49,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:04:49,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:04:49,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:04:49,936 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:04:49,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:04:50,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:04:50,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:04:50,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:04:50,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:04:50,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:04:50,321 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:04:50,321 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 22:04:50,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:50,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:50,323 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:04:50,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-21 22:04:50,363 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 [2021-12-21 22:04:50,370 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:04:50,370 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:04:50,370 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:04:50,370 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:04:50,370 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:04:50,371 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:04:50,371 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:04:50,387 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:04:50,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-12-21 22:04:50,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:50,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:50,405 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:04:50,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-21 22:04:50,416 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 [2021-12-21 22:04:50,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:04:50,422 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:04:50,422 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:04:50,422 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:04:50,422 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:04:50,422 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:04:50,422 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:04:50,439 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:04:50,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-12-21 22:04:50,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:50,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:50,460 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:04:50,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-21 22:04:50,462 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 [2021-12-21 22:04:50,467 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:04:50,467 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:04:50,467 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:04:50,467 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:04:50,467 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:04:50,468 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:04:50,468 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:04:50,487 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:04:50,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-12-21 22:04:50,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:50,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:50,506 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:04:50,513 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 [2021-12-21 22:04:50,519 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:04:50,520 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:04:50,520 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:04:50,520 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:04:50,521 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-21 22:04:50,521 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-21 22:04:50,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-12-21 22:04:50,532 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:04:50,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-12-21 22:04:50,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:50,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:50,552 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:04:50,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-12-21 22:04:50,562 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 [2021-12-21 22:04:50,568 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:04:50,568 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:04:50,568 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:04:50,568 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:04:50,568 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:04:50,568 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:04:50,568 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:04:50,577 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:04:50,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-12-21 22:04:50,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:50,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:50,602 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:04:50,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-12-21 22:04:50,604 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 [2021-12-21 22:04:50,610 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:04:50,610 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:04:50,610 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:04:50,610 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:04:50,610 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:04:50,611 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:04:50,611 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:04:50,623 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:04:50,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-12-21 22:04:50,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:50,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:50,642 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:04:50,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-12-21 22:04:50,644 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 [2021-12-21 22:04:50,649 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:04:50,650 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:04:50,650 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:04:50,650 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:04:50,652 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-21 22:04:50,652 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-21 22:04:50,663 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:04:50,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-12-21 22:04:50,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:50,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:50,684 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:04:50,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-12-21 22:04:50,686 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 [2021-12-21 22:04:50,693 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:04:50,693 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:04:50,693 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:04:50,693 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:04:50,698 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-21 22:04:50,698 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-21 22:04:50,714 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 22:04:50,749 INFO L443 ModelExtractionUtils]: Simplification made 20 calls to the SMT solver. [2021-12-21 22:04:50,749 INFO L444 ModelExtractionUtils]: 2 out of 25 variables were initially zero. Simplification set additionally 20 variables to zero. [2021-12-21 22:04:50,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:04:50,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:50,751 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:04:50,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-12-21 22:04:50,753 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 22:04:50,779 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-12-21 22:04:50,779 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 22:04:50,779 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~length~0#1, ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~length~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2021-12-21 22:04:50,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-12-21 22:04:50,809 INFO L297 tatePredicateManager]: 6 out of 6 supporting invariants were superfluous and have been removed [2021-12-21 22:04:50,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:04:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:04:50,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:04:50,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:04:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:04:50,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 22:04:50,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:04:50,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:04:50,869 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 [2021-12-21 22:04:50,869 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 16 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:04:50,881 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 16 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 18 states and 22 transitions. Complement of second has 5 states. [2021-12-21 22:04:50,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-21 22:04:50,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:04:50,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2021-12-21 22:04:50,883 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 12 letters. Loop has 2 letters. [2021-12-21 22:04:50,883 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:04:50,883 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 14 letters. Loop has 2 letters. [2021-12-21 22:04:50,883 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:04:50,884 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 12 letters. Loop has 4 letters. [2021-12-21 22:04:50,884 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:04:50,884 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 22 transitions. [2021-12-21 22:04:50,885 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-21 22:04:50,885 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 22 transitions. [2021-12-21 22:04:50,885 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-12-21 22:04:50,886 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-12-21 22:04:50,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 22 transitions. [2021-12-21 22:04:50,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 22:04:50,886 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-12-21 22:04:50,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 22 transitions. [2021-12-21 22:04:50,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-12-21 22:04:50,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:04:50,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2021-12-21 22:04:50,888 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-12-21 22:04:50,888 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-12-21 22:04:50,888 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-21 22:04:50,889 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 22 transitions. [2021-12-21 22:04:50,889 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-21 22:04:50,889 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:04:50,889 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:04:50,890 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:04:50,890 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-21 22:04:50,890 INFO L791 eck$LassoCheckResult]: Stem: 390#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 391#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet207#1, main_#t~post209#1, main_#t~post208#1, main_#t~mem210#1, main_#t~mem211#1, main_#t~post212#1, main_#t~post213#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset, main_~value~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 398#L367 assume !(main_~length~0#1 < 1); 392#L367-2 assume !!(main_~length~0#1 <= 536870911);call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 393#L371 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~value~0#1 := main_#t~nondet207#1;havoc main_#t~nondet207#1; 399#L373 assume !!(main_~value~0#1 <= 1073741823);main_~i~0#1 := 0; 394#L375-3 assume !!(main_~i~0#1 < main_~length~0#1);main_#t~post209#1 := main_~value~0#1;main_~value~0#1 := 1 + main_#t~post209#1;call write~int(main_#t~post209#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~post209#1; 395#L375-2 main_#t~post208#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post208#1;havoc main_#t~post208#1; 396#L375-3 assume !!(main_~i~0#1 < main_~length~0#1);main_#t~post209#1 := main_~value~0#1;main_~value~0#1 := 1 + main_#t~post209#1;call write~int(main_#t~post209#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~post209#1; 397#L375-2 main_#t~post208#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post208#1;havoc main_#t~post208#1; 402#L375-3 assume !(main_~i~0#1 < main_~length~0#1); 400#L375-4 main_~j~0#1 := 1; 401#L380-2 assume !!(0 < main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4);call main_#t~mem211#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * (main_~j~0#1 - 1), 4); 389#L380 assume !(main_#t~mem210#1 > main_#t~mem211#1);havoc main_#t~mem210#1;havoc main_#t~mem211#1;main_#t~post213#1 := main_~j~0#1;main_~j~0#1 := main_#t~post213#1 - 1;havoc main_#t~post213#1; 385#L380-2 [2021-12-21 22:04:50,890 INFO L793 eck$LassoCheckResult]: Loop: 385#L380-2 assume !!(0 < main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4);call main_#t~mem211#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * (main_~j~0#1 - 1), 4); 386#L380 assume main_#t~mem210#1 > main_#t~mem211#1;havoc main_#t~mem210#1;havoc main_#t~mem211#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 385#L380-2 [2021-12-21 22:04:50,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:04:50,890 INFO L85 PathProgramCache]: Analyzing trace with hash 409014943, now seen corresponding path program 1 times [2021-12-21 22:04:50,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:04:50,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394127778] [2021-12-21 22:04:50,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:50,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:04:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:04:51,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:04:51,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:04:51,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394127778] [2021-12-21 22:04:51,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394127778] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 22:04:51,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046354468] [2021-12-21 22:04:51,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:51,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 22:04:51,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:51,061 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 22:04:51,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-21 22:04:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:04:51,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-21 22:04:51,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:04:51,145 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-21 22:04:51,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:51,184 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-12-21 22:04:51,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 22:04:51,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:51,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:51,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 22:04:51,259 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 22:04:51,259 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 18 [2021-12-21 22:04:51,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:04:51,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 22:04:51,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-12-21 22:04:51,864 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_56| Int) (v_ArrVal_60 Int)) (or (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~arr~0#1.base|) (+ |c_ULTIMATE.start_main_~arr~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_60)) (.cse1 (* |v_ULTIMATE.start_main_~j~0#1_56| 4))) (<= (+ (select .cse0 (+ |c_ULTIMATE.start_main_~arr~0#1.offset| .cse1 (- 4))) 1) (select .cse0 (+ |c_ULTIMATE.start_main_~arr~0#1.offset| .cse1)))) (not (< 0 |v_ULTIMATE.start_main_~j~0#1_56|)) (not (<= |c_ULTIMATE.start_main_~value~0#1| v_ArrVal_60)) (not (<= |v_ULTIMATE.start_main_~j~0#1_56| 1)))) is different from false [2021-12-21 22:04:52,353 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_56| Int) (v_ArrVal_60 Int)) (or (not (< 0 |v_ULTIMATE.start_main_~j~0#1_56|)) (not (<= |c_ULTIMATE.start_main_~value~0#1| v_ArrVal_60)) (not (<= |v_ULTIMATE.start_main_~j~0#1_56| 1)) (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~arr~0#1.base|) (+ |c_ULTIMATE.start_main_~arr~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4) v_ArrVal_60)) (.cse1 (* |v_ULTIMATE.start_main_~j~0#1_56| 4))) (<= (+ (select .cse0 (+ |c_ULTIMATE.start_main_~arr~0#1.offset| .cse1 (- 4))) 1) (select .cse0 (+ |c_ULTIMATE.start_main_~arr~0#1.offset| .cse1)))))) is different from false [2021-12-21 22:04:52,375 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 52 treesize of output 48 [2021-12-21 22:04:52,383 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-12-21 22:04:52,384 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 814 treesize of output 724 [2021-12-21 22:04:52,521 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-21 22:04:52,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046354468] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 22:04:52,522 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 22:04:52,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 16 [2021-12-21 22:04:52,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621140644] [2021-12-21 22:04:52,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 22:04:52,523 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-21 22:04:52,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:04:52,523 INFO L85 PathProgramCache]: Analyzing trace with hash 2436, now seen corresponding path program 4 times [2021-12-21 22:04:52,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:04:52,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750718175] [2021-12-21 22:04:52,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:52,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:04:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:52,533 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:04:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:52,541 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:04:52,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:04:52,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-21 22:04:52,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=164, Unknown=2, NotChecked=54, Total=272 [2021-12-21 22:04:52,582 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. cyclomatic complexity: 7 Second operand has 17 states, 16 states have (on average 1.8125) internal successors, (29), 17 states have internal predecessors, (29), 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) [2021-12-21 22:04:53,031 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~j~0#1_56| Int) (v_ArrVal_60 Int)) (or (not (< 0 |v_ULTIMATE.start_main_~j~0#1_56|)) (not (<= |c_ULTIMATE.start_main_~value~0#1| v_ArrVal_60)) (not (<= |v_ULTIMATE.start_main_~j~0#1_56| 1)) (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~arr~0#1.base|) (+ |c_ULTIMATE.start_main_~arr~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4) v_ArrVal_60)) (.cse1 (* |v_ULTIMATE.start_main_~j~0#1_56| 4))) (<= (+ (select .cse0 (+ |c_ULTIMATE.start_main_~arr~0#1.offset| .cse1 (- 4))) 1) (select .cse0 (+ |c_ULTIMATE.start_main_~arr~0#1.offset| .cse1)))))) (= |c_ULTIMATE.start_main_~i~0#1| 0) (<= (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~arr~0#1.base|) (+ |c_ULTIMATE.start_main_~arr~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4))) 1) |c_ULTIMATE.start_main_~value~0#1|) (= |c_ULTIMATE.start_main_~arr~0#1.offset| 0)) is different from false [2021-12-21 22:04:53,471 WARN L838 $PredicateComparison]: unable to prove that (and (<= (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~arr~0#1.base|) 0) 1) |c_ULTIMATE.start_main_~value~0#1|) (<= 1 |c_ULTIMATE.start_main_~i~0#1|) (forall ((|v_ULTIMATE.start_main_~j~0#1_56| Int) (v_ArrVal_60 Int)) (or (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~arr~0#1.base|) (+ |c_ULTIMATE.start_main_~arr~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_60)) (.cse1 (* |v_ULTIMATE.start_main_~j~0#1_56| 4))) (<= (+ (select .cse0 (+ |c_ULTIMATE.start_main_~arr~0#1.offset| .cse1 (- 4))) 1) (select .cse0 (+ |c_ULTIMATE.start_main_~arr~0#1.offset| .cse1)))) (not (< 0 |v_ULTIMATE.start_main_~j~0#1_56|)) (not (<= |c_ULTIMATE.start_main_~value~0#1| v_ArrVal_60)) (not (<= |v_ULTIMATE.start_main_~j~0#1_56| 1)))) (<= |c_ULTIMATE.start_main_~i~0#1| 1) (= |c_ULTIMATE.start_main_~arr~0#1.offset| 0)) is different from false [2021-12-21 22:04:53,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:04:53,505 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2021-12-21 22:04:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 22:04:53,506 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 36 transitions. [2021-12-21 22:04:53,506 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-12-21 22:04:53,507 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 28 states and 35 transitions. [2021-12-21 22:04:53,507 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-12-21 22:04:53,507 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-12-21 22:04:53,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 35 transitions. [2021-12-21 22:04:53,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 22:04:53,507 INFO L681 BuchiCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-12-21 22:04:53,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 35 transitions. [2021-12-21 22:04:53,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2021-12-21 22:04:53,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 21 states have internal predecessors, (27), 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) [2021-12-21 22:04:53,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2021-12-21 22:04:53,508 INFO L704 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2021-12-21 22:04:53,508 INFO L587 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2021-12-21 22:04:53,508 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-21 22:04:53,508 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 27 transitions. [2021-12-21 22:04:53,509 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-21 22:04:53,509 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:04:53,509 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:04:53,509 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:04:53,509 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-21 22:04:53,509 INFO L791 eck$LassoCheckResult]: Stem: 545#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 546#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet207#1, main_#t~post209#1, main_#t~post208#1, main_#t~mem210#1, main_#t~mem211#1, main_#t~post212#1, main_#t~post213#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset, main_~value~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 549#L367 assume !(main_~length~0#1 < 1); 547#L367-2 assume !!(main_~length~0#1 <= 536870911);call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 548#L371 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~value~0#1 := main_#t~nondet207#1;havoc main_#t~nondet207#1; 550#L373 assume !!(main_~value~0#1 <= 1073741823);main_~i~0#1 := 0; 541#L375-3 assume !!(main_~i~0#1 < main_~length~0#1);main_#t~post209#1 := main_~value~0#1;main_~value~0#1 := 1 + main_#t~post209#1;call write~int(main_#t~post209#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~post209#1; 542#L375-2 main_#t~post208#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post208#1;havoc main_#t~post208#1; 543#L375-3 assume !!(main_~i~0#1 < main_~length~0#1);main_#t~post209#1 := main_~value~0#1;main_~value~0#1 := 1 + main_#t~post209#1;call write~int(main_#t~post209#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~post209#1; 544#L375-2 main_#t~post208#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post208#1;havoc main_#t~post208#1; 557#L375-3 assume !(main_~i~0#1 < main_~length~0#1); 556#L375-4 main_~j~0#1 := 1; 555#L380-2 assume !!(0 < main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4);call main_#t~mem211#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * (main_~j~0#1 - 1), 4); 539#L380 assume main_#t~mem210#1 > main_#t~mem211#1;havoc main_#t~mem210#1;havoc main_#t~mem211#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 538#L380-2 assume !!(0 < main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4);call main_#t~mem211#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * (main_~j~0#1 - 1), 4); 540#L380 assume !(main_#t~mem210#1 > main_#t~mem211#1);havoc main_#t~mem210#1;havoc main_#t~mem211#1;main_#t~post213#1 := main_~j~0#1;main_~j~0#1 := main_#t~post213#1 - 1;havoc main_#t~post213#1; 536#L380-2 [2021-12-21 22:04:53,509 INFO L793 eck$LassoCheckResult]: Loop: 536#L380-2 assume !!(0 < main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4);call main_#t~mem211#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * (main_~j~0#1 - 1), 4); 537#L380 assume main_#t~mem210#1 > main_#t~mem211#1;havoc main_#t~mem210#1;havoc main_#t~mem211#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 536#L380-2 [2021-12-21 22:04:53,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:04:53,510 INFO L85 PathProgramCache]: Analyzing trace with hash -2073631454, now seen corresponding path program 1 times [2021-12-21 22:04:53,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:04:53,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433804960] [2021-12-21 22:04:53,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:53,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:04:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:04:53,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:04:53,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:04:53,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433804960] [2021-12-21 22:04:53,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433804960] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 22:04:53,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595420527] [2021-12-21 22:04:53,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:53,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 22:04:53,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:53,555 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 22:04:53,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-21 22:04:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:04:53,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 22:04:53,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:04:53,644 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:04:53,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 22:04:53,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:04:53,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595420527] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 22:04:53,679 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 22:04:53,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2021-12-21 22:04:53,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728241808] [2021-12-21 22:04:53,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 22:04:53,680 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-21 22:04:53,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:04:53,680 INFO L85 PathProgramCache]: Analyzing trace with hash 2436, now seen corresponding path program 5 times [2021-12-21 22:04:53,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:04:53,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260163356] [2021-12-21 22:04:53,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:53,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:04:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:53,683 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:04:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:53,685 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:04:53,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:04:53,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 22:04:53,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-12-21 22:04:53,731 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. cyclomatic complexity: 8 Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 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) [2021-12-21 22:04:53,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:04:53,785 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2021-12-21 22:04:53,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 22:04:53,786 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 29 transitions. [2021-12-21 22:04:53,787 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-21 22:04:53,787 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 21 states and 25 transitions. [2021-12-21 22:04:53,787 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-12-21 22:04:53,787 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-12-21 22:04:53,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 25 transitions. [2021-12-21 22:04:53,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 22:04:53,787 INFO L681 BuchiCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-12-21 22:04:53,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 25 transitions. [2021-12-21 22:04:53,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-12-21 22:04:53,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.2) internal successors, (24), 19 states have internal predecessors, (24), 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) [2021-12-21 22:04:53,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-12-21 22:04:53,789 INFO L704 BuchiCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-12-21 22:04:53,789 INFO L587 BuchiCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-12-21 22:04:53,789 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-21 22:04:53,789 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 24 transitions. [2021-12-21 22:04:53,789 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-21 22:04:53,790 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:04:53,790 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:04:53,790 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:04:53,790 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-21 22:04:53,790 INFO L791 eck$LassoCheckResult]: Stem: 703#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 704#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet207#1, main_#t~post209#1, main_#t~post208#1, main_#t~mem210#1, main_#t~mem211#1, main_#t~post212#1, main_#t~post213#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset, main_~value~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 707#L367 assume !(main_~length~0#1 < 1); 705#L367-2 assume !!(main_~length~0#1 <= 536870911);call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 706#L371 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~value~0#1 := main_#t~nondet207#1;havoc main_#t~nondet207#1; 708#L373 assume !!(main_~value~0#1 <= 1073741823);main_~i~0#1 := 0; 699#L375-3 assume !!(main_~i~0#1 < main_~length~0#1);main_#t~post209#1 := main_~value~0#1;main_~value~0#1 := 1 + main_#t~post209#1;call write~int(main_#t~post209#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~post209#1; 700#L375-2 main_#t~post208#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post208#1;havoc main_#t~post208#1; 701#L375-3 assume !!(main_~i~0#1 < main_~length~0#1);main_#t~post209#1 := main_~value~0#1;main_~value~0#1 := 1 + main_#t~post209#1;call write~int(main_#t~post209#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~post209#1; 702#L375-2 main_#t~post208#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post208#1;havoc main_#t~post208#1; 713#L375-3 assume !!(main_~i~0#1 < main_~length~0#1);main_#t~post209#1 := main_~value~0#1;main_~value~0#1 := 1 + main_#t~post209#1;call write~int(main_#t~post209#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~post209#1; 712#L375-2 main_#t~post208#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post208#1;havoc main_#t~post208#1; 711#L375-3 assume !(main_~i~0#1 < main_~length~0#1); 709#L375-4 main_~j~0#1 := 1; 710#L380-2 assume !!(0 < main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4);call main_#t~mem211#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * (main_~j~0#1 - 1), 4); 698#L380 assume !(main_#t~mem210#1 > main_#t~mem211#1);havoc main_#t~mem210#1;havoc main_#t~mem211#1;main_#t~post213#1 := main_~j~0#1;main_~j~0#1 := main_#t~post213#1 - 1;havoc main_#t~post213#1; 694#L380-2 [2021-12-21 22:04:53,790 INFO L793 eck$LassoCheckResult]: Loop: 694#L380-2 assume !!(0 < main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4);call main_#t~mem211#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * (main_~j~0#1 - 1), 4); 695#L380 assume main_#t~mem210#1 > main_#t~mem211#1;havoc main_#t~mem210#1;havoc main_#t~mem211#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 694#L380-2 [2021-12-21 22:04:53,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:04:53,791 INFO L85 PathProgramCache]: Analyzing trace with hash -2020585215, now seen corresponding path program 2 times [2021-12-21 22:04:53,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:04:53,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316992818] [2021-12-21 22:04:53,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:53,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:04:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:04:53,953 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:04:53,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:04:53,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316992818] [2021-12-21 22:04:53,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316992818] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 22:04:53,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928868330] [2021-12-21 22:04:53,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 22:04:53,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 22:04:53,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:53,956 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 22:04:53,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-21 22:04:53,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 22:04:53,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 22:04:53,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-21 22:04:53,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:04:54,012 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-21 22:04:54,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:54,036 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-12-21 22:04:54,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:54,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:54,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:54,083 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 22:04:54,083 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2021-12-21 22:04:54,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 22:04:54,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:54,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:54,133 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 22:04:54,136 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 22:04:54,136 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 18 [2021-12-21 22:04:54,145 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:04:54,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 22:04:54,679 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_66| Int) (v_ArrVal_94 Int)) (or (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~arr~0#1.base|) (+ |c_ULTIMATE.start_main_~arr~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_94)) (.cse1 (* |v_ULTIMATE.start_main_~j~0#1_66| 4))) (<= (+ (select .cse0 (+ .cse1 |c_ULTIMATE.start_main_~arr~0#1.offset| (- 4))) 1) (select .cse0 (+ .cse1 |c_ULTIMATE.start_main_~arr~0#1.offset|)))) (not (< 0 |v_ULTIMATE.start_main_~j~0#1_66|)) (not (<= |v_ULTIMATE.start_main_~j~0#1_66| 1)))) is different from false [2021-12-21 22:05:06,726 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_47| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_47|)) (forall ((|v_ULTIMATE.start_main_~j~0#1_66| Int) (v_ArrVal_94 Int)) (or (not (< 0 |v_ULTIMATE.start_main_~j~0#1_66|)) (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~arr~0#1.base|) (+ |c_ULTIMATE.start_main_~arr~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_47| 4)) v_ArrVal_94)) (.cse1 (* |v_ULTIMATE.start_main_~j~0#1_66| 4))) (<= (+ (select .cse0 (+ .cse1 |c_ULTIMATE.start_main_~arr~0#1.offset| (- 4))) 1) (select .cse0 (+ .cse1 |c_ULTIMATE.start_main_~arr~0#1.offset|)))) (not (<= |v_ULTIMATE.start_main_~j~0#1_66| 1)))))) is different from false [2021-12-21 22:05:07,476 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_92 Int) (|v_ULTIMATE.start_main_~i~0#1_47| Int) (|v_ULTIMATE.start_main_~j~0#1_66| Int) (v_ArrVal_94 Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_47|)) (let ((.cse0 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~arr~0#1.base|) (+ |c_ULTIMATE.start_main_~arr~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_92) (+ |c_ULTIMATE.start_main_~arr~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_47| 4)) v_ArrVal_94)) (.cse1 (* |v_ULTIMATE.start_main_~j~0#1_66| 4))) (<= (+ (select .cse0 (+ .cse1 |c_ULTIMATE.start_main_~arr~0#1.offset| (- 4))) 1) (select .cse0 (+ .cse1 |c_ULTIMATE.start_main_~arr~0#1.offset|)))) (not (<= |c_ULTIMATE.start_main_~value~0#1| v_ArrVal_92)) (not (< 0 |v_ULTIMATE.start_main_~j~0#1_66|)) (not (<= |v_ULTIMATE.start_main_~j~0#1_66| 1)))) is different from false [2021-12-21 22:05:08,192 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_92 Int) (|v_ULTIMATE.start_main_~i~0#1_47| Int) (|v_ULTIMATE.start_main_~j~0#1_66| Int) (v_ArrVal_94 Int)) (or (let ((.cse0 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~arr~0#1.base|) (+ |c_ULTIMATE.start_main_~arr~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4) v_ArrVal_92) (+ |c_ULTIMATE.start_main_~arr~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_47| 4)) v_ArrVal_94)) (.cse1 (* |v_ULTIMATE.start_main_~j~0#1_66| 4))) (<= (+ (select .cse0 (+ .cse1 |c_ULTIMATE.start_main_~arr~0#1.offset| (- 4))) 1) (select .cse0 (+ .cse1 |c_ULTIMATE.start_main_~arr~0#1.offset|)))) (not (<= (+ 2 |c_ULTIMATE.start_main_~i~0#1|) |v_ULTIMATE.start_main_~i~0#1_47|)) (not (<= |c_ULTIMATE.start_main_~value~0#1| v_ArrVal_92)) (not (< 0 |v_ULTIMATE.start_main_~j~0#1_66|)) (not (<= |v_ULTIMATE.start_main_~j~0#1_66| 1)))) is different from false [2021-12-21 22:05:08,224 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 66 treesize of output 62 [2021-12-21 22:05:08,237 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-12-21 22:05:08,238 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47976 treesize of output 44648