./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 e19ca921 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-e19ca92 [2021-12-22 19:55:12,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 19:55:12,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 19:55:12,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 19:55:12,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 19:55:12,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 19:55:12,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 19:55:12,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 19:55:12,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 19:55:12,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 19:55:12,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 19:55:12,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 19:55:12,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 19:55:12,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 19:55:12,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 19:55:12,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 19:55:12,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 19:55:12,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 19:55:12,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 19:55:12,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 19:55:12,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 19:55:12,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 19:55:12,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 19:55:12,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 19:55:12,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 19:55:12,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 19:55:12,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 19:55:12,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 19:55:12,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 19:55:12,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 19:55:12,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 19:55:12,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 19:55:12,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 19:55:12,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 19:55:12,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 19:55:12,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 19:55:12,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 19:55:12,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 19:55:12,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 19:55:12,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 19:55:12,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 19:55:12,681 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-22 19:55:12,699 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 19:55:12,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 19:55:12,699 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 19:55:12,700 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 19:55:12,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 19:55:12,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 19:55:12,701 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 19:55:12,701 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-22 19:55:12,701 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-22 19:55:12,701 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-22 19:55:12,701 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-22 19:55:12,701 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-22 19:55:12,702 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-22 19:55:12,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 19:55:12,702 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 19:55:12,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 19:55:12,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 19:55:12,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-22 19:55:12,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-22 19:55:12,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-22 19:55:12,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 19:55:12,703 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-22 19:55:12,703 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 19:55:12,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-22 19:55:12,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 19:55:12,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 19:55:12,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 19:55:12,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 19:55:12,704 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 19:55:12,705 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-22 19:55:12,705 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c64c4370fd8b6e918e28e5e9f3a24e52a6875ae7268f4c7e3f97f19ee293047c [2021-12-22 19:55:12,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 19:55:12,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 19:55:12,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 19:55:12,902 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 19:55:12,904 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 19:55:12,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/array17_alloca.i [2021-12-22 19:55:12,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/933dce104/479a898362144cb296241bbed5ae51a1/FLAG92dcd4657 [2021-12-22 19:55:13,297 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 19:55:13,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/array17_alloca.i [2021-12-22 19:55:13,304 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/933dce104/479a898362144cb296241bbed5ae51a1/FLAG92dcd4657 [2021-12-22 19:55:13,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/933dce104/479a898362144cb296241bbed5ae51a1 [2021-12-22 19:55:13,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 19:55:13,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 19:55:13,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 19:55:13,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 19:55:13,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 19:55:13,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:55:13" (1/1) ... [2021-12-22 19:55:13,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54a39930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:13, skipping insertion in model container [2021-12-22 19:55:13,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:55:13" (1/1) ... [2021-12-22 19:55:13,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 19:55:13,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 19:55:13,985 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:55:13,993 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 19:55:14,032 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:55:14,058 INFO L208 MainTranslator]: Completed translation [2021-12-22 19:55:14,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:14 WrapperNode [2021-12-22 19:55:14,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 19:55:14,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 19:55:14,071 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 19:55:14,072 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 19:55:14,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:14" (1/1) ... [2021-12-22 19:55:14,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:14" (1/1) ... [2021-12-22 19:55:14,103 INFO L137 Inliner]: procedures = 151, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 64 [2021-12-22 19:55:14,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 19:55:14,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 19:55:14,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 19:55:14,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 19:55:14,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:14" (1/1) ... [2021-12-22 19:55:14,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:14" (1/1) ... [2021-12-22 19:55:14,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:14" (1/1) ... [2021-12-22 19:55:14,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:14" (1/1) ... [2021-12-22 19:55:14,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:14" (1/1) ... [2021-12-22 19:55:14,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:14" (1/1) ... [2021-12-22 19:55:14,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:14" (1/1) ... [2021-12-22 19:55:14,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 19:55:14,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 19:55:14,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 19:55:14,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 19:55:14,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:14" (1/1) ... [2021-12-22 19:55:14,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:14,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:14,152 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) [2021-12-22 19:55:14,172 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 [2021-12-22 19:55:14,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 19:55:14,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 19:55:14,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 19:55:14,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 19:55:14,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 19:55:14,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 19:55:14,243 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 19:55:14,244 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 19:55:14,330 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 19:55:14,334 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 19:55:14,334 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 19:55:14,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:55:14 BoogieIcfgContainer [2021-12-22 19:55:14,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 19:55:14,336 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-22 19:55:14,336 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-22 19:55:14,338 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-22 19:55:14,339 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 19:55:14,339 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.12 07:55:13" (1/3) ... [2021-12-22 19:55:14,340 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1d958e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.12 07:55:14, skipping insertion in model container [2021-12-22 19:55:14,340 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 19:55:14,340 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:14" (2/3) ... [2021-12-22 19:55:14,340 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1d958e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.12 07:55:14, skipping insertion in model container [2021-12-22 19:55:14,340 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 19:55:14,340 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:55:14" (3/3) ... [2021-12-22 19:55:14,341 INFO L388 chiAutomizerObserver]: Analyzing ICFG array17_alloca.i [2021-12-22 19:55:14,368 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-22 19:55:14,368 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-22 19:55:14,368 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-22 19:55:14,368 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-22 19:55:14,368 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-22 19:55:14,369 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-22 19:55:14,369 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-22 19:55:14,369 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-22 19:55:14,377 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) [2021-12-22 19:55:14,389 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-12-22 19:55:14,389 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:55:14,389 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:55:14,393 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-12-22 19:55:14,393 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-22 19:55:14,393 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-22 19:55:14,393 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) [2021-12-22 19:55:14,394 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-12-22 19:55:14,394 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:55:14,409 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:55:14,409 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-12-22 19:55:14,409 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-22 19:55:14,414 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 [2021-12-22 19:55:14,414 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 [2021-12-22 19:55:14,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:14,418 INFO L85 PathProgramCache]: Analyzing trace with hash 889572334, now seen corresponding path program 1 times [2021-12-22 19:55:14,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:14,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033610666] [2021-12-22 19:55:14,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:14,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:14,496 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:14,514 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:14,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:14,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1955, now seen corresponding path program 1 times [2021-12-22 19:55:14,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:14,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447244015] [2021-12-22 19:55:14,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:14,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:14,526 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:14,542 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:14,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:14,545 INFO L85 PathProgramCache]: Analyzing trace with hash 180522064, now seen corresponding path program 1 times [2021-12-22 19:55:14,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:14,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933139630] [2021-12-22 19:55:14,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:14,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:14,573 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:14,603 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:14,877 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:55:14,878 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:55:14,878 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:55:14,878 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:55:14,878 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-22 19:55:14,879 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:14,879 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:55:14,879 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:55:14,879 INFO L133 ssoRankerPreferences]: Filename of dumped script: array17_alloca.i_Iteration1_Lasso [2021-12-22 19:55:14,879 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:55:14,880 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:55:14,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:14,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:14,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:14,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:14,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:14,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:14,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:14,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:14,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:14,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:14,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:14,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:15,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:15,218 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:55:15,221 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-22 19:55:15,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:15,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:15,224 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) [2021-12-22 19:55:15,225 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 [2021-12-22 19:55:15,226 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 [2021-12-22 19:55:15,232 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:15,232 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:55:15,233 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:15,233 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:15,233 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:15,235 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:55:15,235 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:55:15,247 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:15,262 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 [2021-12-22 19:55:15,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:15,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:15,265 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) [2021-12-22 19:55:15,266 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 [2021-12-22 19:55:15,267 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 [2021-12-22 19:55:15,275 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:15,276 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:15,276 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:15,276 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:15,279 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:55:15,279 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:55:15,290 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:15,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-22 19:55:15,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:15,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:15,309 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) [2021-12-22 19:55:15,310 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 [2021-12-22 19:55:15,311 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 [2021-12-22 19:55:15,317 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:15,317 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:55:15,317 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:15,318 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:15,318 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:15,318 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:55:15,318 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:55:15,320 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:15,337 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 [2021-12-22 19:55:15,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:15,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:15,351 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) [2021-12-22 19:55:15,352 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 [2021-12-22 19:55:15,354 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 [2021-12-22 19:55:15,359 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:15,360 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:55:15,360 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:15,360 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:15,360 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:15,360 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:55:15,360 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:55:15,376 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:15,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-12-22 19:55:15,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:15,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:15,394 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) [2021-12-22 19:55:15,395 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 [2021-12-22 19:55:15,396 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 [2021-12-22 19:55:15,402 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:15,402 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:55:15,402 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:15,403 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:15,403 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:15,403 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:55:15,403 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:55:15,439 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:15,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-12-22 19:55:15,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:15,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:15,458 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) [2021-12-22 19:55:15,459 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 [2021-12-22 19:55:15,460 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 [2021-12-22 19:55:15,466 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:15,466 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:55:15,466 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:15,466 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:15,466 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:15,467 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:55:15,467 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:55:15,476 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:15,493 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 [2021-12-22 19:55:15,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:15,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:15,495 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) [2021-12-22 19:55:15,497 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 [2021-12-22 19:55:15,497 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 [2021-12-22 19:55:15,508 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:15,508 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:55:15,508 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:15,508 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:15,508 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:15,510 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:55:15,510 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:55:15,512 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:15,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-22 19:55:15,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:15,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:15,546 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) [2021-12-22 19:55:15,547 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 [2021-12-22 19:55:15,548 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 [2021-12-22 19:55:15,554 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:15,554 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:55:15,554 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:15,554 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:15,554 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:15,555 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:55:15,555 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:55:15,558 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:15,574 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 [2021-12-22 19:55:15,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:15,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:15,575 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) [2021-12-22 19:55:15,576 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 [2021-12-22 19:55:15,577 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 [2021-12-22 19:55:15,583 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:15,583 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:55:15,583 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:15,583 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:15,584 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:15,585 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:55:15,585 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:55:15,597 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:15,619 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 [2021-12-22 19:55:15,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:15,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:15,621 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) [2021-12-22 19:55:15,622 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 [2021-12-22 19:55:15,623 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 [2021-12-22 19:55:15,629 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:15,629 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:55:15,629 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:15,629 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:15,629 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:15,630 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:55:15,630 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:55:15,634 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:15,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-22 19:55:15,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:15,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:15,655 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) [2021-12-22 19:55:15,656 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 [2021-12-22 19:55:15,657 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 [2021-12-22 19:55:15,663 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:15,664 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:15,664 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:15,664 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:15,666 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:55:15,666 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:55:15,701 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:15,718 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 [2021-12-22 19:55:15,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:15,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:15,719 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) [2021-12-22 19:55:15,723 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 [2021-12-22 19:55:15,725 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 [2021-12-22 19:55:15,736 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:15,736 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:55:15,736 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:15,736 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:15,736 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:15,737 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:55:15,737 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:55:15,738 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:15,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-12-22 19:55:15,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:15,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:15,759 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) [2021-12-22 19:55:15,760 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 [2021-12-22 19:55:15,761 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 [2021-12-22 19:55:15,767 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:15,767 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:15,767 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:15,767 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:15,769 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:55:15,769 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:55:15,777 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:15,792 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 [2021-12-22 19:55:15,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:15,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:15,794 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) [2021-12-22 19:55:15,794 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 [2021-12-22 19:55:15,796 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 [2021-12-22 19:55:15,802 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:15,802 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:15,802 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:15,802 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:15,805 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:55:15,806 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:55:15,819 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:15,838 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 [2021-12-22 19:55:15,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:15,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:15,839 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) [2021-12-22 19:55:15,840 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 [2021-12-22 19:55:15,841 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 [2021-12-22 19:55:15,847 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:15,847 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:15,847 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:15,847 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:15,852 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:55:15,853 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:55:15,869 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-22 19:55:15,898 INFO L443 ModelExtractionUtils]: Simplification made 19 calls to the SMT solver. [2021-12-22 19:55:15,898 INFO L444 ModelExtractionUtils]: 1 out of 22 variables were initially zero. Simplification set additionally 18 variables to zero. [2021-12-22 19:55:15,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:15,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:15,901 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) [2021-12-22 19:55:15,901 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 [2021-12-22 19:55:15,903 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-22 19:55:15,924 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-12-22 19:55:15,924 INFO L513 LassoAnalysis]: Proved termination. [2021-12-22 19:55:15,924 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 [] [2021-12-22 19:55:15,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-12-22 19:55:15,953 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2021-12-22 19:55:15,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:55:15,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 19:55:15,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:55:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:55:16,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:55:16,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:55:16,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:55:16,056 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 [2021-12-22 19:55:16,057 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) [2021-12-22 19:55:16,088 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. [2021-12-22 19:55:16,089 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 [2021-12-22 19:55:16,092 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) [2021-12-22 19:55:16,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 34 transitions. [2021-12-22 19:55:16,093 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 34 transitions. Stem has 6 letters. Loop has 2 letters. [2021-12-22 19:55:16,094 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:55:16,094 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 34 transitions. Stem has 8 letters. Loop has 2 letters. [2021-12-22 19:55:16,094 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:55:16,094 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 34 transitions. Stem has 6 letters. Loop has 4 letters. [2021-12-22 19:55:16,094 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:55:16,095 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 49 transitions. [2021-12-22 19:55:16,096 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-22 19:55:16,098 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 12 states and 16 transitions. [2021-12-22 19:55:16,099 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-12-22 19:55:16,099 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-12-22 19:55:16,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2021-12-22 19:55:16,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 19:55:16,099 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-12-22 19:55:16,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2021-12-22 19:55:16,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-12-22 19:55:16,115 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) [2021-12-22 19:55:16,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2021-12-22 19:55:16,116 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-12-22 19:55:16,116 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-12-22 19:55:16,116 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-22 19:55:16,116 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2021-12-22 19:55:16,117 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-22 19:55:16,117 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:55:16,117 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:55:16,117 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:55:16,117 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-22 19:55:16,117 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 [2021-12-22 19:55:16,117 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 [2021-12-22 19:55:16,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:16,118 INFO L85 PathProgramCache]: Analyzing trace with hash 180522006, now seen corresponding path program 1 times [2021-12-22 19:55:16,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:16,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758568403] [2021-12-22 19:55:16,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:16,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:55:16,191 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 [2021-12-22 19:55:16,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:55:16,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:55:16,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758568403] [2021-12-22 19:55:16,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758568403] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:55:16,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:55:16,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 19:55:16,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331144584] [2021-12-22 19:55:16,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:55:16,197 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-22 19:55:16,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:16,198 INFO L85 PathProgramCache]: Analyzing trace with hash 2436, now seen corresponding path program 1 times [2021-12-22 19:55:16,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:16,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400218939] [2021-12-22 19:55:16,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:16,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:16,204 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:16,208 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:16,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:55:16,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 19:55:16,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 19:55:16,260 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) [2021-12-22 19:55:16,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:55:16,275 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2021-12-22 19:55:16,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 19:55:16,276 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2021-12-22 19:55:16,277 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-22 19:55:16,277 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 16 transitions. [2021-12-22 19:55:16,277 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-12-22 19:55:16,277 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-12-22 19:55:16,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2021-12-22 19:55:16,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 19:55:16,278 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-12-22 19:55:16,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2021-12-22 19:55:16,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-12-22 19:55:16,279 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) [2021-12-22 19:55:16,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2021-12-22 19:55:16,279 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-12-22 19:55:16,279 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-12-22 19:55:16,279 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-22 19:55:16,279 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2021-12-22 19:55:16,280 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-22 19:55:16,280 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:55:16,280 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:55:16,280 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:55:16,280 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-22 19:55:16,280 INFO L791 eck$LassoCheckResult]: Stem: 146#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 147#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet207#1, main_#t~post209#1, main_#t~post208#1, main_#t~mem210#1, main_#t~mem211#1, main_#t~post212#1, main_#t~post213#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset, main_~value~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 154#L367 assume !(main_~length~0#1 < 1); 148#L367-2 assume !!(main_~length~0#1 <= 536870911);call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 149#L371 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~value~0#1 := main_#t~nondet207#1;havoc main_#t~nondet207#1; 155#L373 assume !!(main_~value~0#1 <= 1073741823);main_~i~0#1 := 0; 150#L375-3 assume !!(main_~i~0#1 < main_~length~0#1);main_#t~post209#1 := main_~value~0#1;main_~value~0#1 := 1 + main_#t~post209#1;call write~int(main_#t~post209#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~post209#1; 151#L375-2 main_#t~post208#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post208#1;havoc main_#t~post208#1; 152#L375-3 assume !(main_~i~0#1 < main_~length~0#1); 153#L375-4 main_~j~0#1 := 1; 144#L380-2 [2021-12-22 19:55:16,280 INFO L793 eck$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 [2021-12-22 19:55:16,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:16,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1683012600, now seen corresponding path program 1 times [2021-12-22 19:55:16,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:16,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906129744] [2021-12-22 19:55:16,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:16,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:16,296 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:16,303 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:16,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:16,304 INFO L85 PathProgramCache]: Analyzing trace with hash 2436, now seen corresponding path program 2 times [2021-12-22 19:55:16,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:16,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858061041] [2021-12-22 19:55:16,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:16,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:16,308 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:16,311 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:16,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:16,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1827560517, now seen corresponding path program 1 times [2021-12-22 19:55:16,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:16,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153163844] [2021-12-22 19:55:16,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:16,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:55:16,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:55:16,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:55:16,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153163844] [2021-12-22 19:55:16,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153163844] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:55:16,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400968719] [2021-12-22 19:55:16,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:16,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:55:16,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:16,364 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) [2021-12-22 19:55:16,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-22 19:55:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:55:16,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 19:55:16,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:55:16,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:55:16,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:55:16,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:55:16,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400968719] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:55:16,499 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:55:16,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2021-12-22 19:55:16,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189186667] [2021-12-22 19:55:16,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:55:16,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:55:16,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 19:55:16,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-22 19:55:16,548 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) [2021-12-22 19:55:16,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:55:16,594 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2021-12-22 19:55:16,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 19:55:16,596 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 28 transitions. [2021-12-22 19:55:16,599 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-22 19:55:16,600 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 15 states and 17 transitions. [2021-12-22 19:55:16,600 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-12-22 19:55:16,600 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-12-22 19:55:16,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 17 transitions. [2021-12-22 19:55:16,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 19:55:16,600 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-12-22 19:55:16,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 17 transitions. [2021-12-22 19:55:16,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-12-22 19:55:16,602 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) [2021-12-22 19:55:16,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-12-22 19:55:16,602 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-12-22 19:55:16,602 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-12-22 19:55:16,602 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-22 19:55:16,602 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 16 transitions. [2021-12-22 19:55:16,603 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-22 19:55:16,603 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:55:16,603 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:55:16,603 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:55:16,603 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-22 19:55:16,603 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 [2021-12-22 19:55:16,603 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 [2021-12-22 19:55:16,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:16,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1827505318, now seen corresponding path program 2 times [2021-12-22 19:55:16,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:16,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722461150] [2021-12-22 19:55:16,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:16,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:16,630 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:16,643 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:16,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:16,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2436, now seen corresponding path program 3 times [2021-12-22 19:55:16,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:16,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22685822] [2021-12-22 19:55:16,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:16,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:16,647 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:16,661 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:16,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:16,661 INFO L85 PathProgramCache]: Analyzing trace with hash 409014941, now seen corresponding path program 2 times [2021-12-22 19:55:16,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:16,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810006922] [2021-12-22 19:55:16,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:16,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:16,686 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:16,714 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:16,978 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:55:16,978 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:55:16,978 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:55:16,978 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:55:16,978 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-22 19:55:16,978 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:16,978 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:55:16,978 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:55:16,978 INFO L133 ssoRankerPreferences]: Filename of dumped script: array17_alloca.i_Iteration4_Lasso [2021-12-22 19:55:16,978 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:55:16,978 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:55:16,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:16,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:16,983 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:16,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:16,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:16,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:16,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:17,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:17,176 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:17,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:17,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:17,181 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:17,346 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:55:17,346 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-22 19:55:17,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:17,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:17,348 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) [2021-12-22 19:55:17,349 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 [2021-12-22 19:55:17,385 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 [2021-12-22 19:55:17,392 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:17,392 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:55:17,392 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:17,392 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:17,392 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:17,393 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:55:17,393 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:55:17,394 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:17,410 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 [2021-12-22 19:55:17,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:17,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:17,411 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) [2021-12-22 19:55:17,414 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 [2021-12-22 19:55:17,417 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 [2021-12-22 19:55:17,423 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:17,423 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:55:17,423 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:17,423 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:17,423 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:17,446 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:55:17,446 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:55:17,448 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:17,477 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 [2021-12-22 19:55:17,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:17,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:17,479 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) [2021-12-22 19:55:17,480 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 [2021-12-22 19:55:17,481 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 [2021-12-22 19:55:17,488 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:17,488 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:55:17,488 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:17,488 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:17,488 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:17,488 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:55:17,489 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:55:17,489 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:17,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2021-12-22 19:55:17,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:17,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:17,506 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) [2021-12-22 19:55:17,507 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 [2021-12-22 19:55:17,508 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 [2021-12-22 19:55:17,514 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:17,514 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:17,514 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:17,515 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:17,516 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:55:17,516 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:55:17,531 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:17,549 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 [2021-12-22 19:55:17,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:17,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:17,550 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) [2021-12-22 19:55:17,551 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 [2021-12-22 19:55:17,552 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 [2021-12-22 19:55:17,559 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:17,559 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:55:17,559 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:17,559 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:17,559 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:17,559 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:55:17,560 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:55:17,583 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:17,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-12-22 19:55:17,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:17,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:17,614 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) [2021-12-22 19:55:17,615 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 [2021-12-22 19:55:17,617 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 [2021-12-22 19:55:17,623 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:17,623 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:55:17,623 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:17,623 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:17,623 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:17,624 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:55:17,624 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:55:17,634 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:17,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-12-22 19:55:17,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:17,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:17,651 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) [2021-12-22 19:55:17,659 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 [2021-12-22 19:55:17,659 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 [2021-12-22 19:55:17,666 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:17,666 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:17,666 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:17,666 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:17,668 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:55:17,668 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:55:17,678 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:17,711 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 [2021-12-22 19:55:17,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:17,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:17,726 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) [2021-12-22 19:55:17,726 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 [2021-12-22 19:55:17,728 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 [2021-12-22 19:55:17,734 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:17,735 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:17,735 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:17,735 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:17,739 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:55:17,739 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:55:17,749 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-22 19:55:17,772 INFO L443 ModelExtractionUtils]: Simplification made 20 calls to the SMT solver. [2021-12-22 19:55:17,772 INFO L444 ModelExtractionUtils]: 2 out of 25 variables were initially zero. Simplification set additionally 20 variables to zero. [2021-12-22 19:55:17,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:17,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:17,785 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) [2021-12-22 19:55:17,786 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 [2021-12-22 19:55:17,787 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-22 19:55:17,818 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-12-22 19:55:17,818 INFO L513 LassoAnalysis]: Proved termination. [2021-12-22 19:55:17,818 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 [] [2021-12-22 19:55:17,834 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 [2021-12-22 19:55:17,854 INFO L297 tatePredicateManager]: 6 out of 6 supporting invariants were superfluous and have been removed [2021-12-22 19:55:17,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:55:17,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 19:55:17,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:55:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:55:17,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:55:17,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:55:17,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:55:17,908 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 [2021-12-22 19:55:17,909 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) [2021-12-22 19:55:17,916 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. [2021-12-22 19:55:17,917 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 [2021-12-22 19:55:17,917 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) [2021-12-22 19:55:17,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2021-12-22 19:55:17,918 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 12 letters. Loop has 2 letters. [2021-12-22 19:55:17,918 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:55:17,918 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 14 letters. Loop has 2 letters. [2021-12-22 19:55:17,918 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:55:17,918 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 12 letters. Loop has 4 letters. [2021-12-22 19:55:17,918 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:55:17,918 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 22 transitions. [2021-12-22 19:55:17,919 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-22 19:55:17,919 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 22 transitions. [2021-12-22 19:55:17,919 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-12-22 19:55:17,919 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-12-22 19:55:17,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 22 transitions. [2021-12-22 19:55:17,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-22 19:55:17,920 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-12-22 19:55:17,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 22 transitions. [2021-12-22 19:55:17,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-12-22 19:55:17,921 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) [2021-12-22 19:55:17,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2021-12-22 19:55:17,921 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-12-22 19:55:17,921 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-12-22 19:55:17,921 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-22 19:55:17,921 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 22 transitions. [2021-12-22 19:55:17,921 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-22 19:55:17,921 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:55:17,922 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:55:17,922 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:55:17,922 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-22 19:55:17,922 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 [2021-12-22 19:55:17,922 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 [2021-12-22 19:55:17,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:17,923 INFO L85 PathProgramCache]: Analyzing trace with hash 409014943, now seen corresponding path program 1 times [2021-12-22 19:55:17,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:17,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070850803] [2021-12-22 19:55:17,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:17,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:55:18,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:55:18,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:55:18,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070850803] [2021-12-22 19:55:18,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070850803] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:55:18,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926890807] [2021-12-22 19:55:18,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:18,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:55:18,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:18,053 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) [2021-12-22 19:55:18,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-22 19:55:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:55:18,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-22 19:55:18,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:55:18,188 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 [2021-12-22 19:55:18,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 19:55:18,222 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 [2021-12-22 19:55:18,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 19:55:18,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 19:55:18,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 19:55:18,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 19:55:18,287 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 19:55:18,287 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 [2021-12-22 19:55:18,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:55:18,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:55:18,358 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 [2021-12-22 19:55:18,871 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 [2021-12-22 19:55:19,346 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 [2021-12-22 19:55:19,376 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 [2021-12-22 19:55:19,394 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-12-22 19:55:19,394 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 [2021-12-22 19:55:19,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-22 19:55:19,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926890807] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:55:19,550 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:55:19,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 16 [2021-12-22 19:55:19,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138978124] [2021-12-22 19:55:19,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:55:19,550 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-22 19:55:19,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:19,551 INFO L85 PathProgramCache]: Analyzing trace with hash 2436, now seen corresponding path program 4 times [2021-12-22 19:55:19,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:19,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448828217] [2021-12-22 19:55:19,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:19,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:19,554 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:19,556 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:19,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:55:19,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-22 19:55:19,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=164, Unknown=2, NotChecked=54, Total=272 [2021-12-22 19:55:19,614 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) [2021-12-22 19:55:20,054 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 [2021-12-22 19:55:20,488 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 [2021-12-22 19:55:20,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:55:20,525 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2021-12-22 19:55:20,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 19:55:20,527 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 36 transitions. [2021-12-22 19:55:20,528 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-12-22 19:55:20,531 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 28 states and 35 transitions. [2021-12-22 19:55:20,531 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-12-22 19:55:20,531 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-12-22 19:55:20,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 35 transitions. [2021-12-22 19:55:20,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-22 19:55:20,531 INFO L681 BuchiCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-12-22 19:55:20,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 35 transitions. [2021-12-22 19:55:20,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2021-12-22 19:55:20,532 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) [2021-12-22 19:55:20,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2021-12-22 19:55:20,533 INFO L704 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2021-12-22 19:55:20,533 INFO L587 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2021-12-22 19:55:20,533 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-22 19:55:20,533 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 27 transitions. [2021-12-22 19:55:20,533 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-22 19:55:20,533 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:55:20,533 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:55:20,534 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:55:20,534 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-22 19:55:20,534 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 [2021-12-22 19:55:20,534 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 [2021-12-22 19:55:20,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:20,534 INFO L85 PathProgramCache]: Analyzing trace with hash -2073631454, now seen corresponding path program 1 times [2021-12-22 19:55:20,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:20,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002853540] [2021-12-22 19:55:20,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:20,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:55:20,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:55:20,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:55:20,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002853540] [2021-12-22 19:55:20,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002853540] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:55:20,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050283616] [2021-12-22 19:55:20,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:20,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:55:20,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:20,604 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) [2021-12-22 19:55:20,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-22 19:55:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:55:20,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 19:55:20,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:55:20,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:55:20,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:55:20,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:55:20,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050283616] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:55:20,730 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:55:20,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2021-12-22 19:55:20,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952246877] [2021-12-22 19:55:20,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:55:20,731 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-22 19:55:20,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:20,731 INFO L85 PathProgramCache]: Analyzing trace with hash 2436, now seen corresponding path program 5 times [2021-12-22 19:55:20,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:20,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28377627] [2021-12-22 19:55:20,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:20,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:20,735 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:20,737 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:20,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:55:20,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 19:55:20,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-12-22 19:55:20,788 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) [2021-12-22 19:55:20,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:55:20,839 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2021-12-22 19:55:20,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 19:55:20,840 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 29 transitions. [2021-12-22 19:55:20,841 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-22 19:55:20,841 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 21 states and 25 transitions. [2021-12-22 19:55:20,841 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-12-22 19:55:20,841 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-12-22 19:55:20,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 25 transitions. [2021-12-22 19:55:20,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-22 19:55:20,841 INFO L681 BuchiCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-12-22 19:55:20,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 25 transitions. [2021-12-22 19:55:20,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-12-22 19:55:20,842 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) [2021-12-22 19:55:20,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-12-22 19:55:20,842 INFO L704 BuchiCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-12-22 19:55:20,842 INFO L587 BuchiCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-12-22 19:55:20,842 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-22 19:55:20,842 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 24 transitions. [2021-12-22 19:55:20,843 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-22 19:55:20,843 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:55:20,843 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:55:20,843 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:55:20,843 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-22 19:55:20,843 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 [2021-12-22 19:55:20,843 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 [2021-12-22 19:55:20,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:20,843 INFO L85 PathProgramCache]: Analyzing trace with hash -2020585215, now seen corresponding path program 2 times [2021-12-22 19:55:20,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:20,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752055720] [2021-12-22 19:55:20,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:20,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:55:20,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:55:20,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:55:20,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752055720] [2021-12-22 19:55:20,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752055720] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:55:20,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668817955] [2021-12-22 19:55:20,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 19:55:20,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:55:20,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:20,999 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) [2021-12-22 19:55:21,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-22 19:55:21,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 19:55:21,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:55:21,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-22 19:55:21,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:55:21,075 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 [2021-12-22 19:55:21,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 19:55:21,102 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 [2021-12-22 19:55:21,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 19:55:21,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 19:55:21,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 19:55:21,160 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 19:55:21,161 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 [2021-12-22 19:55:21,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 19:55:21,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 19:55:21,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 19:55:21,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 19:55:21,224 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 19:55:21,224 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 [2021-12-22 19:55:21,238 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:55:21,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:55:21,868 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 [2021-12-22 19:55:33,917 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 [2021-12-22 19:55:34,665 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 [2021-12-22 19:55:35,409 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 [2021-12-22 19:55:35,451 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 [2021-12-22 19:55:35,463 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-12-22 19:55:35,464 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