./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/sll-01-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/forester-heap/sll-01-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash de594eb1c59a8c10f5769fd357dcc5a485dda60b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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/AutomizerReach.xml -i ../sv-benchmarks/c/forester-heap/sll-01-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash de594eb1c59a8c10f5769fd357dcc5a485dda60b ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 02:15:22,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 02:15:22,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 02:15:22,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 02:15:22,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 02:15:22,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 02:15:22,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 02:15:22,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 02:15:22,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 02:15:22,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 02:15:22,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 02:15:22,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 02:15:22,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 02:15:22,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 02:15:22,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 02:15:22,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 02:15:22,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 02:15:22,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 02:15:22,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 02:15:22,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 02:15:22,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 02:15:22,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 02:15:22,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 02:15:22,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 02:15:22,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 02:15:22,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 02:15:22,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 02:15:22,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 02:15:22,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 02:15:22,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 02:15:22,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 02:15:22,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 02:15:22,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 02:15:22,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 02:15:22,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 02:15:22,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 02:15:22,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 02:15:22,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 02:15:22,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 02:15:22,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 02:15:22,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 02:15:22,901 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 02:15:22,937 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 02:15:22,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 02:15:22,938 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 02:15:22,939 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 02:15:22,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 02:15:22,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 02:15:22,940 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 02:15:22,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 02:15:22,941 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 02:15:22,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 02:15:22,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 02:15:22,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 02:15:22,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 02:15:22,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 02:15:22,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 02:15:22,943 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 02:15:22,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 02:15:22,943 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 02:15:22,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 02:15:22,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 02:15:22,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 02:15:22,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 02:15:22,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 02:15:22,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 02:15:22,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 02:15:22,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 02:15:22,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 02:15:22,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 02:15:22,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 02:15:22,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 02:15:22,945 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de594eb1c59a8c10f5769fd357dcc5a485dda60b [2021-08-26 02:15:23,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 02:15:23,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 02:15:23,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 02:15:23,300 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 02:15:23,300 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 02:15:23,301 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-01-1.i [2021-08-26 02:15:23,367 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f10d90b2/9bcc4189e1f141308313f8074cf3ad7a/FLAG87df8d088 [2021-08-26 02:15:23,882 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 02:15:23,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i [2021-08-26 02:15:23,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f10d90b2/9bcc4189e1f141308313f8074cf3ad7a/FLAG87df8d088 [2021-08-26 02:15:24,275 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f10d90b2/9bcc4189e1f141308313f8074cf3ad7a [2021-08-26 02:15:24,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 02:15:24,280 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 02:15:24,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 02:15:24,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 02:15:24,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 02:15:24,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:15:24" (1/1) ... [2021-08-26 02:15:24,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32fe1c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:15:24, skipping insertion in model container [2021-08-26 02:15:24,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:15:24" (1/1) ... [2021-08-26 02:15:24,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 02:15:24,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 02:15:24,743 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22034,22047] [2021-08-26 02:15:24,757 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22307,22320] [2021-08-26 02:15:24,760 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22516,22529] [2021-08-26 02:15:24,761 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22586,22599] [2021-08-26 02:15:24,765 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22853,22866] [2021-08-26 02:15:24,767 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22961,22974] [2021-08-26 02:15:24,770 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23192,23205] [2021-08-26 02:15:24,772 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23272,23285] [2021-08-26 02:15:24,774 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23351,23364] [2021-08-26 02:15:24,776 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23441,23454] [2021-08-26 02:15:24,779 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23619,23632] [2021-08-26 02:15:24,780 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23697,23710] [2021-08-26 02:15:24,781 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23774,23787] [2021-08-26 02:15:24,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 02:15:24,795 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 02:15:24,830 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22034,22047] [2021-08-26 02:15:24,834 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22307,22320] [2021-08-26 02:15:24,837 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22516,22529] [2021-08-26 02:15:24,837 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22586,22599] [2021-08-26 02:15:24,843 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22853,22866] [2021-08-26 02:15:24,845 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22961,22974] [2021-08-26 02:15:24,847 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23192,23205] [2021-08-26 02:15:24,848 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23272,23285] [2021-08-26 02:15:24,849 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23351,23364] [2021-08-26 02:15:24,857 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23441,23454] [2021-08-26 02:15:24,861 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23619,23632] [2021-08-26 02:15:24,862 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23697,23710] [2021-08-26 02:15:24,863 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23774,23787] [2021-08-26 02:15:24,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 02:15:24,895 INFO L208 MainTranslator]: Completed translation [2021-08-26 02:15:24,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:15:24 WrapperNode [2021-08-26 02:15:24,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 02:15:24,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 02:15:24,898 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 02:15:24,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 02:15:24,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:15:24" (1/1) ... [2021-08-26 02:15:24,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:15:24" (1/1) ... [2021-08-26 02:15:24,980 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 02:15:24,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 02:15:24,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 02:15:24,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 02:15:24,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:15:24" (1/1) ... [2021-08-26 02:15:24,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:15:24" (1/1) ... [2021-08-26 02:15:25,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:15:24" (1/1) ... [2021-08-26 02:15:25,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:15:24" (1/1) ... [2021-08-26 02:15:25,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:15:24" (1/1) ... [2021-08-26 02:15:25,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:15:24" (1/1) ... [2021-08-26 02:15:25,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:15:24" (1/1) ... [2021-08-26 02:15:25,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 02:15:25,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 02:15:25,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 02:15:25,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 02:15:25,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:15:24" (1/1) ... [2021-08-26 02:15:25,043 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 02:15:25,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:15:25,066 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 02:15:25,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 02:15:25,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-26 02:15:25,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-26 02:15:25,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 02:15:25,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-26 02:15:25,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 02:15:25,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 02:15:25,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 02:15:25,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 02:15:25,826 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 02:15:25,826 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-08-26 02:15:25,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:15:25 BoogieIcfgContainer [2021-08-26 02:15:25,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 02:15:25,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 02:15:25,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 02:15:25,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 02:15:25,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 02:15:24" (1/3) ... [2021-08-26 02:15:25,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@475ce715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:15:25, skipping insertion in model container [2021-08-26 02:15:25,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:15:24" (2/3) ... [2021-08-26 02:15:25,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@475ce715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:15:25, skipping insertion in model container [2021-08-26 02:15:25,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:15:25" (3/3) ... [2021-08-26 02:15:25,845 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-01-1.i [2021-08-26 02:15:25,850 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 02:15:25,850 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-08-26 02:15:25,901 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 02:15:25,907 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 02:15:25,907 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-08-26 02:15:25,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 69 states have (on average 1.9565217391304348) internal successors, (135), 82 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:25,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-26 02:15:25,928 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:25,929 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-26 02:15:25,929 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:15:25,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:25,935 INFO L82 PathProgramCache]: Analyzing trace with hash 925700, now seen corresponding path program 1 times [2021-08-26 02:15:25,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:25,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740625373] [2021-08-26 02:15:25,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:25,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:26,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:26,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:26,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740625373] [2021-08-26 02:15:26,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740625373] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:15:26,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:15:26,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:15:26,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074497038] [2021-08-26 02:15:26,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:15:26,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:26,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:15:26,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:15:26,131 INFO L87 Difference]: Start difference. First operand has 83 states, 69 states have (on average 1.9565217391304348) internal successors, (135), 82 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:26,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:15:26,204 INFO L93 Difference]: Finished difference Result 180 states and 296 transitions. [2021-08-26 02:15:26,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:15:26,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-08-26 02:15:26,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:15:26,214 INFO L225 Difference]: With dead ends: 180 [2021-08-26 02:15:26,214 INFO L226 Difference]: Without dead ends: 95 [2021-08-26 02:15:26,217 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:15:26,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-08-26 02:15:26,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 77. [2021-08-26 02:15:26,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 65 states have (on average 1.323076923076923) internal successors, (86), 76 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:26,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2021-08-26 02:15:26,259 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 4 [2021-08-26 02:15:26,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:15:26,260 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2021-08-26 02:15:26,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:26,260 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2021-08-26 02:15:26,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-26 02:15:26,261 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:26,261 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:15:26,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 02:15:26,262 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:15:26,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:26,265 INFO L82 PathProgramCache]: Analyzing trace with hash 261454926, now seen corresponding path program 1 times [2021-08-26 02:15:26,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:26,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12705673] [2021-08-26 02:15:26,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:26,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:26,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:26,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:26,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12705673] [2021-08-26 02:15:26,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12705673] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:15:26,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:15:26,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:15:26,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136041175] [2021-08-26 02:15:26,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:15:26,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:26,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:15:26,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:15:26,359 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:26,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:15:26,387 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2021-08-26 02:15:26,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:15:26,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-26 02:15:26,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:15:26,390 INFO L225 Difference]: With dead ends: 80 [2021-08-26 02:15:26,390 INFO L226 Difference]: Without dead ends: 78 [2021-08-26 02:15:26,391 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:15:26,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-08-26 02:15:26,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-08-26 02:15:26,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 66 states have (on average 1.3181818181818181) internal successors, (87), 77 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:26,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2021-08-26 02:15:26,398 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 10 [2021-08-26 02:15:26,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:15:26,398 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2021-08-26 02:15:26,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:26,399 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2021-08-26 02:15:26,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-26 02:15:26,399 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:26,399 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:15:26,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 02:15:26,400 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:15:26,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:26,400 INFO L82 PathProgramCache]: Analyzing trace with hash 261456848, now seen corresponding path program 1 times [2021-08-26 02:15:26,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:26,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094476880] [2021-08-26 02:15:26,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:26,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:26,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:26,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:26,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094476880] [2021-08-26 02:15:26,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094476880] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:15:26,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:15:26,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 02:15:26,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163759339] [2021-08-26 02:15:26,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:15:26,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:26,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:15:26,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:15:26,535 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:26,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:15:26,642 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2021-08-26 02:15:26,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 02:15:26,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-26 02:15:26,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:15:26,643 INFO L225 Difference]: With dead ends: 79 [2021-08-26 02:15:26,643 INFO L226 Difference]: Without dead ends: 77 [2021-08-26 02:15:26,644 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:15:26,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-08-26 02:15:26,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2021-08-26 02:15:26,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 64 states have (on average 1.3125) internal successors, (84), 74 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:26,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2021-08-26 02:15:26,649 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 10 [2021-08-26 02:15:26,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:15:26,656 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2021-08-26 02:15:26,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:26,656 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2021-08-26 02:15:26,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-26 02:15:26,661 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:26,661 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:15:26,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 02:15:26,661 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:15:26,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:26,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1712619113, now seen corresponding path program 1 times [2021-08-26 02:15:26,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:26,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971120739] [2021-08-26 02:15:26,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:26,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:26,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:26,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:26,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971120739] [2021-08-26 02:15:26,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971120739] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:15:26,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:15:26,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:15:26,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691341522] [2021-08-26 02:15:26,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:15:26,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:26,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:15:26,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:15:26,716 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:26,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:15:26,769 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2021-08-26 02:15:26,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:15:26,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) Word has length 15 [2021-08-26 02:15:26,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:15:26,771 INFO L225 Difference]: With dead ends: 78 [2021-08-26 02:15:26,771 INFO L226 Difference]: Without dead ends: 74 [2021-08-26 02:15:26,771 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:15:26,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-08-26 02:15:26,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2021-08-26 02:15:26,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 70 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:26,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2021-08-26 02:15:26,776 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 15 [2021-08-26 02:15:26,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:15:26,776 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2021-08-26 02:15:26,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:26,777 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2021-08-26 02:15:26,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-26 02:15:26,777 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:26,777 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:15:26,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-26 02:15:26,778 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:15:26,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:26,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1551589151, now seen corresponding path program 1 times [2021-08-26 02:15:26,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:26,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302011095] [2021-08-26 02:15:26,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:26,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:26,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:26,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:26,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302011095] [2021-08-26 02:15:26,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302011095] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:15:26,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:15:26,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 02:15:26,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312095895] [2021-08-26 02:15:26,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:15:26,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:26,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:15:26,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:15:26,844 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2021-08-26 02:15:26,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:15:26,926 INFO L93 Difference]: Finished difference Result 187 states and 209 transitions. [2021-08-26 02:15:26,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 02:15:26,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) Word has length 16 [2021-08-26 02:15:26,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:15:26,931 INFO L225 Difference]: With dead ends: 187 [2021-08-26 02:15:26,931 INFO L226 Difference]: Without dead ends: 124 [2021-08-26 02:15:26,932 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:15:26,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-08-26 02:15:26,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 73. [2021-08-26 02:15:26,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 64 states have (on average 1.28125) internal successors, (82), 72 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:26,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2021-08-26 02:15:26,947 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 16 [2021-08-26 02:15:26,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:15:26,947 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2021-08-26 02:15:26,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2021-08-26 02:15:26,947 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2021-08-26 02:15:26,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-26 02:15:26,947 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:26,948 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:15:26,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-26 02:15:26,948 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:15:26,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:26,948 INFO L82 PathProgramCache]: Analyzing trace with hash -2063319775, now seen corresponding path program 1 times [2021-08-26 02:15:26,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:26,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892803328] [2021-08-26 02:15:26,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:26,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:27,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:27,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892803328] [2021-08-26 02:15:27,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892803328] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:15:27,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:15:27,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 02:15:27,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325059523] [2021-08-26 02:15:27,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:15:27,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:27,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:15:27,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:15:27,014 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2021-08-26 02:15:27,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:15:27,119 INFO L93 Difference]: Finished difference Result 132 states and 146 transitions. [2021-08-26 02:15:27,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 02:15:27,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) Word has length 16 [2021-08-26 02:15:27,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:15:27,121 INFO L225 Difference]: With dead ends: 132 [2021-08-26 02:15:27,121 INFO L226 Difference]: Without dead ends: 112 [2021-08-26 02:15:27,122 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:15:27,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-08-26 02:15:27,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 72. [2021-08-26 02:15:27,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 64 states have (on average 1.265625) internal successors, (81), 71 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:27,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2021-08-26 02:15:27,139 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 16 [2021-08-26 02:15:27,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:15:27,140 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2021-08-26 02:15:27,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2021-08-26 02:15:27,140 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2021-08-26 02:15:27,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-26 02:15:27,141 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:27,141 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:15:27,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-26 02:15:27,142 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:15:27,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:27,142 INFO L82 PathProgramCache]: Analyzing trace with hash -940628212, now seen corresponding path program 1 times [2021-08-26 02:15:27,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:27,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906291922] [2021-08-26 02:15:27,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:27,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:27,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:27,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:27,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906291922] [2021-08-26 02:15:27,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906291922] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:15:27,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:15:27,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:15:27,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919941178] [2021-08-26 02:15:27,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:15:27,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:27,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:15:27,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:15:27,213 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:27,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:15:27,225 INFO L93 Difference]: Finished difference Result 137 states and 155 transitions. [2021-08-26 02:15:27,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:15:27,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) Word has length 20 [2021-08-26 02:15:27,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:15:27,227 INFO L225 Difference]: With dead ends: 137 [2021-08-26 02:15:27,227 INFO L226 Difference]: Without dead ends: 96 [2021-08-26 02:15:27,228 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:15:27,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-08-26 02:15:27,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 75. [2021-08-26 02:15:27,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 74 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:27,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2021-08-26 02:15:27,240 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 20 [2021-08-26 02:15:27,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:15:27,241 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2021-08-26 02:15:27,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:27,241 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2021-08-26 02:15:27,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-26 02:15:27,242 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:27,242 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:15:27,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-26 02:15:27,242 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:15:27,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:27,243 INFO L82 PathProgramCache]: Analyzing trace with hash 905291998, now seen corresponding path program 1 times [2021-08-26 02:15:27,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:27,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320408802] [2021-08-26 02:15:27,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:27,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:27,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:27,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:27,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320408802] [2021-08-26 02:15:27,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320408802] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:15:27,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:15:27,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:15:27,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591819902] [2021-08-26 02:15:27,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:15:27,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:27,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:15:27,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:15:27,303 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:27,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:15:27,316 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2021-08-26 02:15:27,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:15:27,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-08-26 02:15:27,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:15:27,317 INFO L225 Difference]: With dead ends: 75 [2021-08-26 02:15:27,317 INFO L226 Difference]: Without dead ends: 73 [2021-08-26 02:15:27,320 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:15:27,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-08-26 02:15:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-08-26 02:15:27,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 72 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:27,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2021-08-26 02:15:27,326 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 21 [2021-08-26 02:15:27,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:15:27,326 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2021-08-26 02:15:27,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:27,328 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2021-08-26 02:15:27,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-26 02:15:27,330 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:27,330 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:15:27,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-26 02:15:27,331 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:15:27,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:27,333 INFO L82 PathProgramCache]: Analyzing trace with hash 886650935, now seen corresponding path program 1 times [2021-08-26 02:15:27,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:27,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035393056] [2021-08-26 02:15:27,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:27,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:27,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:27,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:27,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035393056] [2021-08-26 02:15:27,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035393056] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:15:27,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:15:27,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 02:15:27,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718187262] [2021-08-26 02:15:27,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:15:27,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:27,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:15:27,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:15:27,410 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 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) [2021-08-26 02:15:27,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:15:27,485 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2021-08-26 02:15:27,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 02:15:27,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 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) Word has length 23 [2021-08-26 02:15:27,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:15:27,486 INFO L225 Difference]: With dead ends: 74 [2021-08-26 02:15:27,486 INFO L226 Difference]: Without dead ends: 72 [2021-08-26 02:15:27,486 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:15:27,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-08-26 02:15:27,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2021-08-26 02:15:27,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 70 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:27,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2021-08-26 02:15:27,492 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 23 [2021-08-26 02:15:27,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:15:27,492 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2021-08-26 02:15:27,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 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) [2021-08-26 02:15:27,494 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2021-08-26 02:15:27,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-26 02:15:27,496 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:27,496 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:15:27,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-26 02:15:27,497 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:15:27,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:27,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1458355201, now seen corresponding path program 1 times [2021-08-26 02:15:27,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:27,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018920924] [2021-08-26 02:15:27,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:27,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:27,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:27,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:27,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018920924] [2021-08-26 02:15:27,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018920924] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:15:27,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:15:27,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-26 02:15:27,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375561039] [2021-08-26 02:15:27,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 02:15:27,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:27,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 02:15:27,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-26 02:15:27,619 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 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) [2021-08-26 02:15:27,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:15:27,843 INFO L93 Difference]: Finished difference Result 175 states and 199 transitions. [2021-08-26 02:15:27,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 02:15:27,844 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 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) Word has length 24 [2021-08-26 02:15:27,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:15:27,844 INFO L225 Difference]: With dead ends: 175 [2021-08-26 02:15:27,845 INFO L226 Difference]: Without dead ends: 133 [2021-08-26 02:15:27,845 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 72.2ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-08-26 02:15:27,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-08-26 02:15:27,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 81. [2021-08-26 02:15:27,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 80 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:27,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2021-08-26 02:15:27,848 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 24 [2021-08-26 02:15:27,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:15:27,849 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2021-08-26 02:15:27,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 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) [2021-08-26 02:15:27,849 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2021-08-26 02:15:27,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-26 02:15:27,850 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:27,850 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:15:27,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-26 02:15:27,850 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:15:27,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:27,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1357759361, now seen corresponding path program 1 times [2021-08-26 02:15:27,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:27,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436089889] [2021-08-26 02:15:27,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:27,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:27,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:27,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:27,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436089889] [2021-08-26 02:15:27,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436089889] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:15:27,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:15:27,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-26 02:15:27,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846503092] [2021-08-26 02:15:27,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 02:15:27,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:27,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 02:15:27,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-26 02:15:27,997 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 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) [2021-08-26 02:15:28,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:15:28,989 INFO L93 Difference]: Finished difference Result 234 states and 259 transitions. [2021-08-26 02:15:28,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 02:15:28,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 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) Word has length 24 [2021-08-26 02:15:28,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:15:28,991 INFO L225 Difference]: With dead ends: 234 [2021-08-26 02:15:28,992 INFO L226 Difference]: Without dead ends: 232 [2021-08-26 02:15:28,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 637.3ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-08-26 02:15:28,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-08-26 02:15:28,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 93. [2021-08-26 02:15:28,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 87 states have (on average 1.2183908045977012) internal successors, (106), 92 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:28,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2021-08-26 02:15:28,997 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 24 [2021-08-26 02:15:28,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:15:28,998 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2021-08-26 02:15:28,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 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) [2021-08-26 02:15:28,998 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2021-08-26 02:15:28,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-26 02:15:28,999 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:28,999 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:15:28,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-26 02:15:28,999 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:15:29,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:29,000 INFO L82 PathProgramCache]: Analyzing trace with hash 680714775, now seen corresponding path program 1 times [2021-08-26 02:15:29,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:29,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737498061] [2021-08-26 02:15:29,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:29,001 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:29,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-26 02:15:29,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:29,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737498061] [2021-08-26 02:15:29,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737498061] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:15:29,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:15:29,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 02:15:29,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805036628] [2021-08-26 02:15:29,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 02:15:29,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:29,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 02:15:29,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:15:29,060 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:29,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:15:29,151 INFO L93 Difference]: Finished difference Result 139 states and 158 transitions. [2021-08-26 02:15:29,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 02:15:29,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) Word has length 26 [2021-08-26 02:15:29,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:15:29,153 INFO L225 Difference]: With dead ends: 139 [2021-08-26 02:15:29,153 INFO L226 Difference]: Without dead ends: 121 [2021-08-26 02:15:29,153 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 26.0ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-26 02:15:29,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-08-26 02:15:29,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 113. [2021-08-26 02:15:29,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 107 states have (on average 1.2429906542056075) internal successors, (133), 112 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:29,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 133 transitions. [2021-08-26 02:15:29,158 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 133 transitions. Word has length 26 [2021-08-26 02:15:29,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:15:29,159 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 133 transitions. [2021-08-26 02:15:29,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:29,159 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 133 transitions. [2021-08-26 02:15:29,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-26 02:15:29,160 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:29,160 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:15:29,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-26 02:15:29,160 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:15:29,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:29,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1502606953, now seen corresponding path program 1 times [2021-08-26 02:15:29,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:29,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865242709] [2021-08-26 02:15:29,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:29,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-26 02:15:29,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:29,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865242709] [2021-08-26 02:15:29,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865242709] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:15:29,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:15:29,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:15:29,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043411043] [2021-08-26 02:15:29,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:15:29,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:29,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:15:29,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:15:29,192 INFO L87 Difference]: Start difference. First operand 113 states and 133 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:29,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:15:29,240 INFO L93 Difference]: Finished difference Result 113 states and 133 transitions. [2021-08-26 02:15:29,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:15:29,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) Word has length 26 [2021-08-26 02:15:29,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:15:29,241 INFO L225 Difference]: With dead ends: 113 [2021-08-26 02:15:29,241 INFO L226 Difference]: Without dead ends: 111 [2021-08-26 02:15:29,242 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:15:29,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-08-26 02:15:29,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-08-26 02:15:29,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 106 states have (on average 1.2358490566037736) internal successors, (131), 110 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:29,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2021-08-26 02:15:29,247 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 26 [2021-08-26 02:15:29,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:15:29,247 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2021-08-26 02:15:29,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:29,248 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2021-08-26 02:15:29,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-26 02:15:29,248 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:29,248 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:15:29,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-26 02:15:29,249 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:15:29,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:29,249 INFO L82 PathProgramCache]: Analyzing trace with hash -988757936, now seen corresponding path program 1 times [2021-08-26 02:15:29,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:29,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496241810] [2021-08-26 02:15:29,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:29,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:29,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:29,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:29,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496241810] [2021-08-26 02:15:29,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496241810] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:15:29,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:15:29,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-26 02:15:29,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89779176] [2021-08-26 02:15:29,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 02:15:29,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:29,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 02:15:29,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-26 02:15:29,369 INFO L87 Difference]: Start difference. First operand 111 states and 131 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 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) [2021-08-26 02:15:29,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:15:29,918 INFO L93 Difference]: Finished difference Result 268 states and 308 transitions. [2021-08-26 02:15:29,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 02:15:29,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 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) Word has length 27 [2021-08-26 02:15:29,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:15:29,920 INFO L225 Difference]: With dead ends: 268 [2021-08-26 02:15:29,920 INFO L226 Difference]: Without dead ends: 266 [2021-08-26 02:15:29,921 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 255.3ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-08-26 02:15:29,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-08-26 02:15:29,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 114. [2021-08-26 02:15:29,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.2293577981651376) internal successors, (134), 113 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:29,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 134 transitions. [2021-08-26 02:15:29,927 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 134 transitions. Word has length 27 [2021-08-26 02:15:29,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:15:29,928 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 134 transitions. [2021-08-26 02:15:29,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 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) [2021-08-26 02:15:29,928 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 134 transitions. [2021-08-26 02:15:29,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-26 02:15:29,928 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:29,929 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:15:29,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-26 02:15:29,929 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:15:29,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:29,929 INFO L82 PathProgramCache]: Analyzing trace with hash -937634650, now seen corresponding path program 1 times [2021-08-26 02:15:29,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:29,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186257642] [2021-08-26 02:15:29,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:29,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:29,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:29,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:29,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186257642] [2021-08-26 02:15:29,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186257642] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:15:29,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239499609] [2021-08-26 02:15:29,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:29,997 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:15:29,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:15:30,005 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:15:30,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 02:15:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:30,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-26 02:15:30,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:15:30,292 INFO L388 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 11 treesize of output 7 [2021-08-26 02:15:30,303 INFO L388 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 11 treesize of output 7 [2021-08-26 02:15:30,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:30,479 INFO L388 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 21 treesize of output 20 [2021-08-26 02:15:30,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:30,498 INFO L388 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 21 treesize of output 20 [2021-08-26 02:15:30,914 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 02:15:30,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 31 [2021-08-26 02:15:30,924 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 02:15:30,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2021-08-26 02:15:30,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:30,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239499609] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:15:30,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:15:30,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2021-08-26 02:15:30,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148839360] [2021-08-26 02:15:30,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 02:15:30,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:30,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 02:15:30,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-26 02:15:30,951 INFO L87 Difference]: Start difference. First operand 114 states and 134 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:31,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:15:31,228 INFO L93 Difference]: Finished difference Result 216 states and 248 transitions. [2021-08-26 02:15:31,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 02:15:31,228 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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) Word has length 29 [2021-08-26 02:15:31,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:15:31,229 INFO L225 Difference]: With dead ends: 216 [2021-08-26 02:15:31,229 INFO L226 Difference]: Without dead ends: 156 [2021-08-26 02:15:31,230 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 133.4ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-08-26 02:15:31,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-08-26 02:15:31,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 116. [2021-08-26 02:15:31,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 115 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:31,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 134 transitions. [2021-08-26 02:15:31,237 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 134 transitions. Word has length 29 [2021-08-26 02:15:31,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:15:31,237 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 134 transitions. [2021-08-26 02:15:31,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:31,238 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 134 transitions. [2021-08-26 02:15:31,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-26 02:15:31,238 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:31,238 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:15:31,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 02:15:31,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-08-26 02:15:31,461 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:15:31,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:31,462 INFO L82 PathProgramCache]: Analyzing trace with hash -2010394174, now seen corresponding path program 1 times [2021-08-26 02:15:31,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:31,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660189558] [2021-08-26 02:15:31,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:31,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:31,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:31,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660189558] [2021-08-26 02:15:31,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660189558] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:15:31,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:15:31,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-26 02:15:31,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113239502] [2021-08-26 02:15:31,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 02:15:31,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:31,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 02:15:31,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-26 02:15:31,673 INFO L87 Difference]: Start difference. First operand 116 states and 134 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 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) [2021-08-26 02:15:31,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:15:31,899 INFO L93 Difference]: Finished difference Result 159 states and 176 transitions. [2021-08-26 02:15:31,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 02:15:31,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 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) Word has length 29 [2021-08-26 02:15:31,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:15:31,900 INFO L225 Difference]: With dead ends: 159 [2021-08-26 02:15:31,901 INFO L226 Difference]: Without dead ends: 139 [2021-08-26 02:15:31,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 69.5ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-26 02:15:31,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-08-26 02:15:31,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 115. [2021-08-26 02:15:31,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.2) internal successors, (132), 114 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:31,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 132 transitions. [2021-08-26 02:15:31,906 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 132 transitions. Word has length 29 [2021-08-26 02:15:31,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:15:31,907 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 132 transitions. [2021-08-26 02:15:31,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 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) [2021-08-26 02:15:31,907 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 132 transitions. [2021-08-26 02:15:31,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-26 02:15:31,907 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:31,907 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:15:31,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-26 02:15:31,908 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:15:31,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:31,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1521997910, now seen corresponding path program 1 times [2021-08-26 02:15:31,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:31,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981174773] [2021-08-26 02:15:31,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:31,909 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:31,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:31,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:31,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981174773] [2021-08-26 02:15:31,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981174773] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:15:31,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:15:31,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:15:31,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424105337] [2021-08-26 02:15:31,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:15:31,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:31,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:15:31,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:15:31,934 INFO L87 Difference]: Start difference. First operand 115 states and 132 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:31,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:15:31,957 INFO L93 Difference]: Finished difference Result 220 states and 257 transitions. [2021-08-26 02:15:31,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:15:31,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) Word has length 31 [2021-08-26 02:15:31,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:15:31,958 INFO L225 Difference]: With dead ends: 220 [2021-08-26 02:15:31,959 INFO L226 Difference]: Without dead ends: 165 [2021-08-26 02:15:31,959 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:15:31,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-08-26 02:15:31,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 138. [2021-08-26 02:15:31,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 133 states have (on average 1.2105263157894737) internal successors, (161), 137 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:31,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 161 transitions. [2021-08-26 02:15:31,965 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 161 transitions. Word has length 31 [2021-08-26 02:15:31,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:15:31,966 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 161 transitions. [2021-08-26 02:15:31,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:31,966 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 161 transitions. [2021-08-26 02:15:31,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-26 02:15:31,966 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:31,967 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:15:31,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-26 02:15:31,967 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:15:31,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:31,967 INFO L82 PathProgramCache]: Analyzing trace with hash 914215427, now seen corresponding path program 1 times [2021-08-26 02:15:31,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:31,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35990871] [2021-08-26 02:15:31,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:31,968 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:32,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:32,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:32,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35990871] [2021-08-26 02:15:32,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35990871] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:15:32,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389669566] [2021-08-26 02:15:32,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:32,060 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:15:32,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:15:32,065 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:15:32,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 02:15:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:32,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-26 02:15:32,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:15:32,216 INFO L388 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 11 treesize of output 7 [2021-08-26 02:15:32,221 INFO L388 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 11 treesize of output 7 [2021-08-26 02:15:32,371 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-08-26 02:15:32,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-08-26 02:15:32,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:32,402 INFO L388 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 21 treesize of output 20 [2021-08-26 02:15:32,763 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-08-26 02:15:32,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 47 treesize of output 33 [2021-08-26 02:15:32,771 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-08-26 02:15:32,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 27 treesize of output 13 [2021-08-26 02:15:32,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-26 02:15:32,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389669566] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:15:32,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:15:32,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-08-26 02:15:32,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697242362] [2021-08-26 02:15:32,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 02:15:32,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:32,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 02:15:32,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-26 02:15:32,795 INFO L87 Difference]: Start difference. First operand 138 states and 161 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:33,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:15:33,136 INFO L93 Difference]: Finished difference Result 264 states and 300 transitions. [2021-08-26 02:15:33,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 02:15:33,140 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) Word has length 32 [2021-08-26 02:15:33,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:15:33,141 INFO L225 Difference]: With dead ends: 264 [2021-08-26 02:15:33,141 INFO L226 Difference]: Without dead ends: 221 [2021-08-26 02:15:33,142 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 132.6ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-08-26 02:15:33,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-08-26 02:15:33,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 165. [2021-08-26 02:15:33,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 160 states have (on average 1.2375) internal successors, (198), 164 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:33,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 198 transitions. [2021-08-26 02:15:33,149 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 198 transitions. Word has length 32 [2021-08-26 02:15:33,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:15:33,149 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 198 transitions. [2021-08-26 02:15:33,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:33,149 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 198 transitions. [2021-08-26 02:15:33,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-26 02:15:33,149 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:33,149 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:15:33,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 02:15:33,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-08-26 02:15:33,385 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:15:33,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:33,385 INFO L82 PathProgramCache]: Analyzing trace with hash 191981961, now seen corresponding path program 1 times [2021-08-26 02:15:33,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:33,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132623610] [2021-08-26 02:15:33,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:33,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:33,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:33,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:33,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132623610] [2021-08-26 02:15:33,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132623610] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:15:33,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:15:33,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 02:15:33,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396943255] [2021-08-26 02:15:33,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 02:15:33,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:33,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 02:15:33,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:15:33,479 INFO L87 Difference]: Start difference. First operand 165 states and 198 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:33,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:15:33,587 INFO L93 Difference]: Finished difference Result 231 states and 274 transitions. [2021-08-26 02:15:33,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 02:15:33,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) Word has length 35 [2021-08-26 02:15:33,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:15:33,589 INFO L225 Difference]: With dead ends: 231 [2021-08-26 02:15:33,589 INFO L226 Difference]: Without dead ends: 117 [2021-08-26 02:15:33,589 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.3ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:15:33,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-26 02:15:33,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-08-26 02:15:33,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 113 states have (on average 1.1592920353982301) internal successors, (131), 116 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:33,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 131 transitions. [2021-08-26 02:15:33,596 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 131 transitions. Word has length 35 [2021-08-26 02:15:33,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:15:33,596 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 131 transitions. [2021-08-26 02:15:33,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:33,596 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 131 transitions. [2021-08-26 02:15:33,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-26 02:15:33,597 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:33,597 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:15:33,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-26 02:15:33,598 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:15:33,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:33,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1562646056, now seen corresponding path program 1 times [2021-08-26 02:15:33,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:33,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037653001] [2021-08-26 02:15:33,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:33,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:33,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:33,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:33,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037653001] [2021-08-26 02:15:33,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037653001] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:15:33,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562900885] [2021-08-26 02:15:33,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:33,795 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:15:33,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:15:33,796 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:15:33,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 02:15:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:34,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-26 02:15:34,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:15:34,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:15:34,202 INFO L388 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 13 treesize of output 9 [2021-08-26 02:15:34,208 INFO L388 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 13 treesize of output 9 [2021-08-26 02:15:34,535 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-26 02:15:34,535 INFO L388 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 11 treesize of output 11 [2021-08-26 02:15:34,564 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-08-26 02:15:34,565 INFO L388 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 1 case distinctions, treesize of input 76 treesize of output 66 [2021-08-26 02:15:34,580 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-08-26 02:15:34,580 INFO L388 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 1 case distinctions, treesize of input 63 treesize of output 53 [2021-08-26 02:15:34,936 INFO L354 Elim1Store]: treesize reduction 118, result has 16.9 percent of original size [2021-08-26 02:15:34,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 101 treesize of output 85 [2021-08-26 02:15:34,977 INFO L354 Elim1Store]: treesize reduction 146, result has 16.1 percent of original size [2021-08-26 02:15:34,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 94 [2021-08-26 02:15:37,118 INFO L354 Elim1Store]: treesize reduction 70, result has 1.4 percent of original size [2021-08-26 02:15:37,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 95 treesize of output 60 [2021-08-26 02:15:37,129 INFO L354 Elim1Store]: treesize reduction 70, result has 1.4 percent of original size [2021-08-26 02:15:37,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 26 [2021-08-26 02:15:37,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:37,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562900885] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:15:37,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:15:37,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-08-26 02:15:37,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723241089] [2021-08-26 02:15:37,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-26 02:15:37,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:37,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-26 02:15:37,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=116, Unknown=1, NotChecked=0, Total=156 [2021-08-26 02:15:37,167 INFO L87 Difference]: Start difference. First operand 117 states and 131 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:45,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:15:45,121 INFO L93 Difference]: Finished difference Result 357 states and 401 transitions. [2021-08-26 02:15:45,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-26 02:15:45,122 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 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) Word has length 36 [2021-08-26 02:15:45,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:15:45,123 INFO L225 Difference]: With dead ends: 357 [2021-08-26 02:15:45,123 INFO L226 Difference]: Without dead ends: 297 [2021-08-26 02:15:45,125 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 3371.1ms TimeCoverageRelationStatistics Valid=219, Invalid=649, Unknown=2, NotChecked=0, Total=870 [2021-08-26 02:15:45,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-08-26 02:15:45,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 150. [2021-08-26 02:15:45,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 146 states have (on average 1.1643835616438356) internal successors, (170), 149 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:45,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 170 transitions. [2021-08-26 02:15:45,143 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 170 transitions. Word has length 36 [2021-08-26 02:15:45,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:15:45,143 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 170 transitions. [2021-08-26 02:15:45,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:45,143 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 170 transitions. [2021-08-26 02:15:45,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-26 02:15:45,144 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:45,144 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:15:45,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 02:15:45,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:15:45,357 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:15:45,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:45,357 INFO L82 PathProgramCache]: Analyzing trace with hash 878042536, now seen corresponding path program 1 times [2021-08-26 02:15:45,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:45,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678562130] [2021-08-26 02:15:45,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:45,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:45,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:45,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:45,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678562130] [2021-08-26 02:15:45,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678562130] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:15:45,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503017695] [2021-08-26 02:15:45,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:45,642 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:15:45,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:15:45,649 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:15:45,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-26 02:15:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:45,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 33 conjunts are in the unsatisfiable core [2021-08-26 02:15:45,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:15:45,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:15:45,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:45,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:46,003 INFO L354 Elim1Store]: treesize reduction 190, result has 8.2 percent of original size [2021-08-26 02:15:46,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 157 treesize of output 146 [2021-08-26 02:15:46,034 INFO L354 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2021-08-26 02:15:46,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 197 treesize of output 201 [2021-08-26 02:15:46,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:46,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:15:46,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:46,050 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-26 02:15:46,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 88 [2021-08-26 02:15:46,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:46,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:15:46,477 INFO L354 Elim1Store]: treesize reduction 120, result has 20.5 percent of original size [2021-08-26 02:15:46,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 150 treesize of output 119 [2021-08-26 02:15:46,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:46,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:15:46,544 INFO L354 Elim1Store]: treesize reduction 186, result has 18.8 percent of original size [2021-08-26 02:15:46,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 137 treesize of output 133 [2021-08-26 02:15:46,560 INFO L354 Elim1Store]: treesize reduction 22, result has 40.5 percent of original size [2021-08-26 02:15:46,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 124 treesize of output 126 [2021-08-26 02:15:47,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:15:47,073 INFO L354 Elim1Store]: treesize reduction 120, result has 16.7 percent of original size [2021-08-26 02:15:47,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 13 case distinctions, treesize of input 164 treesize of output 123 [2021-08-26 02:15:47,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:15:47,112 INFO L354 Elim1Store]: treesize reduction 194, result has 13.4 percent of original size [2021-08-26 02:15:47,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 156 treesize of output 163 [2021-08-26 02:15:48,677 INFO L354 Elim1Store]: treesize reduction 177, result has 6.3 percent of original size [2021-08-26 02:15:48,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 160 treesize of output 99 [2021-08-26 02:15:48,710 INFO L354 Elim1Store]: treesize reduction 150, result has 2.0 percent of original size [2021-08-26 02:15:48,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 78 treesize of output 52 [2021-08-26 02:15:48,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:48,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503017695] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:15:48,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:15:48,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 17 [2021-08-26 02:15:48,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303554224] [2021-08-26 02:15:48,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-26 02:15:48,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:48,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-26 02:15:48,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-08-26 02:15:48,728 INFO L87 Difference]: Start difference. First operand 150 states and 170 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:55,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:15:55,467 INFO L93 Difference]: Finished difference Result 478 states and 530 transitions. [2021-08-26 02:15:55,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-26 02:15:55,469 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 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) Word has length 36 [2021-08-26 02:15:55,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:15:55,471 INFO L225 Difference]: With dead ends: 478 [2021-08-26 02:15:55,472 INFO L226 Difference]: Without dead ends: 476 [2021-08-26 02:15:55,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 2172.6ms TimeCoverageRelationStatistics Valid=447, Invalid=1533, Unknown=0, NotChecked=0, Total=1980 [2021-08-26 02:15:55,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-08-26 02:15:55,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 184. [2021-08-26 02:15:55,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 180 states have (on average 1.1722222222222223) internal successors, (211), 183 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:55,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 211 transitions. [2021-08-26 02:15:55,490 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 211 transitions. Word has length 36 [2021-08-26 02:15:55,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:15:55,490 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 211 transitions. [2021-08-26 02:15:55,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:15:55,490 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 211 transitions. [2021-08-26 02:15:55,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-26 02:15:55,491 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:55,491 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:15:55,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-26 02:15:55,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:15:55,705 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:15:55,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:55,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1418469577, now seen corresponding path program 1 times [2021-08-26 02:15:55,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:55,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999428816] [2021-08-26 02:15:55,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:55,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:55,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:55,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:55,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999428816] [2021-08-26 02:15:55,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999428816] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:15:55,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955145876] [2021-08-26 02:15:55,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:55,991 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:15:55,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:15:55,992 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:15:55,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-26 02:15:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:56,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 33 conjunts are in the unsatisfiable core [2021-08-26 02:15:56,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:15:56,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:15:56,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:56,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:15:56,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:56,455 INFO L354 Elim1Store]: treesize reduction 87, result has 9.4 percent of original size [2021-08-26 02:15:56,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 287 treesize of output 209 [2021-08-26 02:15:56,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:56,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:15:56,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:56,473 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-08-26 02:15:56,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 63 [2021-08-26 02:15:56,489 INFO L354 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2021-08-26 02:15:56,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 94 [2021-08-26 02:15:56,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:56,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:15:56,883 INFO L354 Elim1Store]: treesize reduction 120, result has 20.5 percent of original size [2021-08-26 02:15:56,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 150 treesize of output 119 [2021-08-26 02:15:56,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:56,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:15:56,932 INFO L354 Elim1Store]: treesize reduction 186, result has 18.8 percent of original size [2021-08-26 02:15:56,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 137 treesize of output 133 [2021-08-26 02:15:56,960 INFO L354 Elim1Store]: treesize reduction 22, result has 40.5 percent of original size [2021-08-26 02:15:56,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 124 treesize of output 126 [2021-08-26 02:15:57,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:15:57,466 INFO L354 Elim1Store]: treesize reduction 120, result has 16.7 percent of original size [2021-08-26 02:15:57,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 13 case distinctions, treesize of input 164 treesize of output 123 [2021-08-26 02:15:57,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:15:57,504 INFO L354 Elim1Store]: treesize reduction 194, result has 13.4 percent of original size [2021-08-26 02:15:57,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 156 treesize of output 163 [2021-08-26 02:15:59,218 INFO L354 Elim1Store]: treesize reduction 165, result has 6.8 percent of original size [2021-08-26 02:15:59,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 156 treesize of output 97 [2021-08-26 02:15:59,249 INFO L354 Elim1Store]: treesize reduction 150, result has 2.0 percent of original size [2021-08-26 02:15:59,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 76 treesize of output 50 [2021-08-26 02:15:59,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:59,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955145876] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:15:59,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:15:59,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 17 [2021-08-26 02:15:59,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690162451] [2021-08-26 02:15:59,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-26 02:15:59,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:59,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-26 02:15:59,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-08-26 02:15:59,263 INFO L87 Difference]: Start difference. First operand 184 states and 211 transitions. Second operand has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:08,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:16:08,930 INFO L93 Difference]: Finished difference Result 465 states and 515 transitions. [2021-08-26 02:16:08,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-26 02:16:08,930 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 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) Word has length 39 [2021-08-26 02:16:08,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:16:08,934 INFO L225 Difference]: With dead ends: 465 [2021-08-26 02:16:08,934 INFO L226 Difference]: Without dead ends: 463 [2021-08-26 02:16:08,937 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 3404.8ms TimeCoverageRelationStatistics Valid=389, Invalid=1250, Unknown=1, NotChecked=0, Total=1640 [2021-08-26 02:16:08,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-08-26 02:16:08,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 187. [2021-08-26 02:16:08,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 183 states have (on average 1.169398907103825) internal successors, (214), 186 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:08,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 214 transitions. [2021-08-26 02:16:08,956 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 214 transitions. Word has length 39 [2021-08-26 02:16:08,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:16:08,956 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 214 transitions. [2021-08-26 02:16:08,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:08,957 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 214 transitions. [2021-08-26 02:16:08,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-26 02:16:08,957 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:16:08,957 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:16:08,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-26 02:16:09,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-08-26 02:16:09,184 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:16:09,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:16:09,184 INFO L82 PathProgramCache]: Analyzing trace with hash 266160952, now seen corresponding path program 1 times [2021-08-26 02:16:09,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:16:09,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281877165] [2021-08-26 02:16:09,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:16:09,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:16:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:16:09,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:16:09,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:16:09,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281877165] [2021-08-26 02:16:09,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281877165] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:16:09,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298614905] [2021-08-26 02:16:09,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:16:09,626 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:16:09,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:16:09,628 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:16:09,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-26 02:16:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:16:10,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-26 02:16:10,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:16:10,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:16:10,374 INFO L354 Elim1Store]: treesize reduction 171, result has 5.0 percent of original size [2021-08-26 02:16:10,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 281 treesize of output 203 [2021-08-26 02:16:10,420 INFO L354 Elim1Store]: treesize reduction 128, result has 17.4 percent of original size [2021-08-26 02:16:10,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 186 treesize of output 145 [2021-08-26 02:16:10,440 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-08-26 02:16:10,440 INFO L388 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 202 treesize of output 202 [2021-08-26 02:16:10,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:10,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2021-08-26 02:16:10,505 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-08-26 02:16:10,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 16 [2021-08-26 02:16:11,369 INFO L354 Elim1Store]: treesize reduction 80, result has 3.6 percent of original size [2021-08-26 02:16:11,369 INFO L388 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 114 treesize of output 58 [2021-08-26 02:16:11,382 INFO L354 Elim1Store]: treesize reduction 56, result has 5.1 percent of original size [2021-08-26 02:16:11,382 INFO L388 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 28 [2021-08-26 02:16:11,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-26 02:16:11,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298614905] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:16:11,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-26 02:16:11,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 11 [2021-08-26 02:16:11,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870262228] [2021-08-26 02:16:11,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 02:16:11,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:16:11,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 02:16:11,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-08-26 02:16:11,395 INFO L87 Difference]: Start difference. First operand 187 states and 214 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:11,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:16:11,648 INFO L93 Difference]: Finished difference Result 216 states and 243 transitions. [2021-08-26 02:16:11,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 02:16:11,648 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) Word has length 40 [2021-08-26 02:16:11,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:16:11,649 INFO L225 Difference]: With dead ends: 216 [2021-08-26 02:16:11,649 INFO L226 Difference]: Without dead ends: 214 [2021-08-26 02:16:11,650 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 170.3ms TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-08-26 02:16:11,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-08-26 02:16:11,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 193. [2021-08-26 02:16:11,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 189 states have (on average 1.164021164021164) internal successors, (220), 192 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:11,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 220 transitions. [2021-08-26 02:16:11,681 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 220 transitions. Word has length 40 [2021-08-26 02:16:11,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:16:11,681 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 220 transitions. [2021-08-26 02:16:11,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:11,681 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 220 transitions. [2021-08-26 02:16:11,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-26 02:16:11,682 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:16:11,682 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:16:11,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-26 02:16:11,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:16:11,901 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:16:11,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:16:11,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1206775941, now seen corresponding path program 1 times [2021-08-26 02:16:11,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:16:11,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684124412] [2021-08-26 02:16:11,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:16:11,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:16:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:16:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:16:12,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:16:12,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684124412] [2021-08-26 02:16:12,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684124412] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:16:12,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930276138] [2021-08-26 02:16:12,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:16:12,040 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:16:12,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:16:12,041 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:16:12,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-26 02:16:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:16:12,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-26 02:16:12,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:16:12,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:16:12,951 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-08-26 02:16:12,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-08-26 02:16:12,969 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-26 02:16:12,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-08-26 02:16:13,136 INFO L354 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2021-08-26 02:16:13,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 38 [2021-08-26 02:16:13,519 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-08-26 02:16:13,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 21 [2021-08-26 02:16:13,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:16:13,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930276138] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:16:13,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:16:13,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-08-26 02:16:13,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487157846] [2021-08-26 02:16:13,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-26 02:16:13,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:16:13,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-26 02:16:13,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-08-26 02:16:13,639 INFO L87 Difference]: Start difference. First operand 193 states and 220 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:14,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:16:14,454 INFO L93 Difference]: Finished difference Result 337 states and 371 transitions. [2021-08-26 02:16:14,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-26 02:16:14,455 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 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) Word has length 41 [2021-08-26 02:16:14,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:16:14,456 INFO L225 Difference]: With dead ends: 337 [2021-08-26 02:16:14,456 INFO L226 Difference]: Without dead ends: 324 [2021-08-26 02:16:14,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 471.4ms TimeCoverageRelationStatistics Valid=206, Invalid=550, Unknown=0, NotChecked=0, Total=756 [2021-08-26 02:16:14,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-08-26 02:16:14,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 187. [2021-08-26 02:16:14,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 183 states have (on average 1.1584699453551912) internal successors, (212), 186 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:14,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 212 transitions. [2021-08-26 02:16:14,494 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 212 transitions. Word has length 41 [2021-08-26 02:16:14,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:16:14,495 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 212 transitions. [2021-08-26 02:16:14,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:14,495 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 212 transitions. [2021-08-26 02:16:14,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-26 02:16:14,496 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:16:14,496 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:16:14,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-26 02:16:14,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:16:14,713 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:16:14,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:16:14,713 INFO L82 PathProgramCache]: Analyzing trace with hash -486884641, now seen corresponding path program 1 times [2021-08-26 02:16:14,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:16:14,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961260929] [2021-08-26 02:16:14,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:16:14,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:16:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:16:15,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:16:15,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:16:15,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961260929] [2021-08-26 02:16:15,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961260929] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:16:15,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882680791] [2021-08-26 02:16:15,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:16:15,011 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:16:15,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:16:15,012 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:16:15,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-26 02:16:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:16:15,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 28 conjunts are in the unsatisfiable core [2021-08-26 02:16:15,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:16:15,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:16:15,956 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-08-26 02:16:15,957 INFO L388 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 1 case distinctions, treesize of input 27 treesize of output 19 [2021-08-26 02:16:15,975 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:16:15,975 INFO L388 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 1 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:16:15,992 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-26 02:16:15,992 INFO L388 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 11 treesize of output 11 [2021-08-26 02:16:16,212 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:16:16,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 57 [2021-08-26 02:16:16,218 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-26 02:16:16,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 66 [2021-08-26 02:16:16,938 INFO L354 Elim1Store]: treesize reduction 52, result has 5.5 percent of original size [2021-08-26 02:16:16,939 INFO L388 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 54 [2021-08-26 02:16:16,949 INFO L354 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2021-08-26 02:16:16,950 INFO L388 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 28 [2021-08-26 02:16:16,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:16:16,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882680791] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:16:16,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:16:16,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-08-26 02:16:16,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159573599] [2021-08-26 02:16:16,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-26 02:16:16,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:16:16,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-26 02:16:16,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-08-26 02:16:16,974 INFO L87 Difference]: Start difference. First operand 187 states and 212 transitions. Second operand has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:17,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:16:17,877 INFO L93 Difference]: Finished difference Result 335 states and 373 transitions. [2021-08-26 02:16:17,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-26 02:16:17,881 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 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) Word has length 41 [2021-08-26 02:16:17,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:16:17,883 INFO L225 Difference]: With dead ends: 335 [2021-08-26 02:16:17,883 INFO L226 Difference]: Without dead ends: 299 [2021-08-26 02:16:17,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 603.6ms TimeCoverageRelationStatistics Valid=142, Invalid=560, Unknown=0, NotChecked=0, Total=702 [2021-08-26 02:16:17,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-08-26 02:16:17,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 223. [2021-08-26 02:16:17,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 219 states have (on average 1.1552511415525115) internal successors, (253), 222 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:17,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 253 transitions. [2021-08-26 02:16:17,898 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 253 transitions. Word has length 41 [2021-08-26 02:16:17,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:16:17,898 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 253 transitions. [2021-08-26 02:16:17,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:17,898 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 253 transitions. [2021-08-26 02:16:17,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-26 02:16:17,899 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:16:17,899 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:16:17,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-26 02:16:18,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-08-26 02:16:18,125 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:16:18,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:16:18,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1579942495, now seen corresponding path program 1 times [2021-08-26 02:16:18,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:16:18,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694679819] [2021-08-26 02:16:18,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:16:18,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:16:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:16:18,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:16:18,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:16:18,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694679819] [2021-08-26 02:16:18,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694679819] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:16:18,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372529185] [2021-08-26 02:16:18,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:16:18,690 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:16:18,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:16:18,691 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:16:18,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-26 02:16:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:16:19,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 35 conjunts are in the unsatisfiable core [2021-08-26 02:16:19,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:16:19,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:16:19,675 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:16:19,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:16:19,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:16:19,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:16:19,991 INFO L354 Elim1Store]: treesize reduction 140, result has 17.2 percent of original size [2021-08-26 02:16:19,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 249 treesize of output 168 [2021-08-26 02:16:20,025 INFO L354 Elim1Store]: treesize reduction 132, result has 18.5 percent of original size [2021-08-26 02:16:20,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 157 treesize of output 142 [2021-08-26 02:16:20,041 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-08-26 02:16:20,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 136 treesize of output 146 [2021-08-26 02:16:21,121 INFO L354 Elim1Store]: treesize reduction 186, result has 3.6 percent of original size [2021-08-26 02:16:21,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 211 treesize of output 109 [2021-08-26 02:16:21,154 INFO L354 Elim1Store]: treesize reduction 142, result has 4.7 percent of original size [2021-08-26 02:16:21,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 70 treesize of output 50 [2021-08-26 02:16:21,168 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:16:21,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372529185] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:16:21,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:16:21,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 16 [2021-08-26 02:16:21,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355165693] [2021-08-26 02:16:21,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-26 02:16:21,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:16:21,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-26 02:16:21,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-08-26 02:16:21,170 INFO L87 Difference]: Start difference. First operand 223 states and 253 transitions. Second operand has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:27,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:16:27,143 INFO L93 Difference]: Finished difference Result 462 states and 509 transitions. [2021-08-26 02:16:27,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-26 02:16:27,144 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 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) Word has length 41 [2021-08-26 02:16:27,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:16:27,145 INFO L225 Difference]: With dead ends: 462 [2021-08-26 02:16:27,146 INFO L226 Difference]: Without dead ends: 460 [2021-08-26 02:16:27,146 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1244.0ms TimeCoverageRelationStatistics Valid=250, Invalid=872, Unknown=0, NotChecked=0, Total=1122 [2021-08-26 02:16:27,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-08-26 02:16:27,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 291. [2021-08-26 02:16:27,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 287 states have (on average 1.1428571428571428) internal successors, (328), 290 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:27,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 328 transitions. [2021-08-26 02:16:27,169 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 328 transitions. Word has length 41 [2021-08-26 02:16:27,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:16:27,169 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 328 transitions. [2021-08-26 02:16:27,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:27,169 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 328 transitions. [2021-08-26 02:16:27,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-26 02:16:27,170 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:16:27,170 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:16:27,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-26 02:16:27,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-08-26 02:16:27,385 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:16:27,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:16:27,385 INFO L82 PathProgramCache]: Analyzing trace with hash 695494227, now seen corresponding path program 1 times [2021-08-26 02:16:27,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:16:27,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938118996] [2021-08-26 02:16:27,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:16:27,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:16:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:16:27,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-26 02:16:27,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:16:27,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938118996] [2021-08-26 02:16:27,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938118996] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:16:27,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:16:27,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-26 02:16:27,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535563666] [2021-08-26 02:16:27,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 02:16:27,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:16:27,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 02:16:27,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 02:16:27,487 INFO L87 Difference]: Start difference. First operand 291 states and 328 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:27,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:16:27,711 INFO L93 Difference]: Finished difference Result 309 states and 346 transitions. [2021-08-26 02:16:27,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 02:16:27,712 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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) Word has length 43 [2021-08-26 02:16:27,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:16:27,713 INFO L225 Difference]: With dead ends: 309 [2021-08-26 02:16:27,713 INFO L226 Difference]: Without dead ends: 278 [2021-08-26 02:16:27,713 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 73.6ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-08-26 02:16:27,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-08-26 02:16:27,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 257. [2021-08-26 02:16:27,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 253 states have (on average 1.158102766798419) internal successors, (293), 256 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:27,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 293 transitions. [2021-08-26 02:16:27,732 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 293 transitions. Word has length 43 [2021-08-26 02:16:27,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:16:27,732 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 293 transitions. [2021-08-26 02:16:27,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:27,732 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 293 transitions. [2021-08-26 02:16:27,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-08-26 02:16:27,733 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:16:27,733 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:16:27,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-26 02:16:27,734 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:16:27,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:16:27,734 INFO L82 PathProgramCache]: Analyzing trace with hash -475616078, now seen corresponding path program 1 times [2021-08-26 02:16:27,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:16:27,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114595210] [2021-08-26 02:16:27,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:16:27,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:16:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:16:28,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:16:28,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:16:28,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114595210] [2021-08-26 02:16:28,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114595210] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:16:28,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743948019] [2021-08-26 02:16:28,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:16:28,020 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:16:28,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:16:28,020 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:16:28,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-26 02:16:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:16:28,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 35 conjunts are in the unsatisfiable core [2021-08-26 02:16:28,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:16:28,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:16:29,048 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-08-26 02:16:29,049 INFO L388 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 1 case distinctions, treesize of input 27 treesize of output 19 [2021-08-26 02:16:29,065 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:16:29,065 INFO L388 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 1 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:16:29,084 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:16:29,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:16:29,345 INFO L354 Elim1Store]: treesize reduction 140, result has 17.2 percent of original size [2021-08-26 02:16:29,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 249 treesize of output 168 [2021-08-26 02:16:29,370 INFO L354 Elim1Store]: treesize reduction 132, result has 18.5 percent of original size [2021-08-26 02:16:29,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 157 treesize of output 142 [2021-08-26 02:16:29,384 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-08-26 02:16:29,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 136 treesize of output 146 [2021-08-26 02:16:31,498 INFO L354 Elim1Store]: treesize reduction 186, result has 3.6 percent of original size [2021-08-26 02:16:31,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 207 treesize of output 105 [2021-08-26 02:16:31,530 INFO L354 Elim1Store]: treesize reduction 142, result has 4.7 percent of original size [2021-08-26 02:16:31,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 68 treesize of output 48 [2021-08-26 02:16:31,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:16:31,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743948019] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:16:31,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:16:31,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 16 [2021-08-26 02:16:31,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252528102] [2021-08-26 02:16:31,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-26 02:16:31,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:16:31,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-26 02:16:31,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-08-26 02:16:31,540 INFO L87 Difference]: Start difference. First operand 257 states and 293 transitions. Second operand has 16 states, 16 states have (on average 4.625) internal successors, (74), 16 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:34,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:16:34,859 INFO L93 Difference]: Finished difference Result 407 states and 452 transitions. [2021-08-26 02:16:34,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-26 02:16:34,860 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.625) internal successors, (74), 16 states have internal predecessors, (74), 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) Word has length 44 [2021-08-26 02:16:34,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:16:34,861 INFO L225 Difference]: With dead ends: 407 [2021-08-26 02:16:34,861 INFO L226 Difference]: Without dead ends: 405 [2021-08-26 02:16:34,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1902.4ms TimeCoverageRelationStatistics Valid=241, Invalid=815, Unknown=0, NotChecked=0, Total=1056 [2021-08-26 02:16:34,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-08-26 02:16:34,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 260. [2021-08-26 02:16:34,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 256 states have (on average 1.15625) internal successors, (296), 259 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:34,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 296 transitions. [2021-08-26 02:16:34,883 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 296 transitions. Word has length 44 [2021-08-26 02:16:34,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:16:34,883 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 296 transitions. [2021-08-26 02:16:34,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.625) internal successors, (74), 16 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:34,884 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 296 transitions. [2021-08-26 02:16:34,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-26 02:16:34,884 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:16:34,885 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:16:34,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-08-26 02:16:35,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-08-26 02:16:35,105 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:16:35,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:16:35,105 INFO L82 PathProgramCache]: Analyzing trace with hash 2064172324, now seen corresponding path program 2 times [2021-08-26 02:16:35,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:16:35,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739044432] [2021-08-26 02:16:35,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:16:35,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:16:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:16:35,251 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-26 02:16:35,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:16:35,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739044432] [2021-08-26 02:16:35,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739044432] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:16:35,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153903371] [2021-08-26 02:16:35,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 02:16:35,252 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:16:35,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:16:35,260 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:16:35,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-26 02:16:36,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 02:16:36,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:16:36,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-26 02:16:36,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:16:36,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:16:36,402 INFO L388 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 13 treesize of output 9 [2021-08-26 02:16:36,406 INFO L388 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 13 treesize of output 9 [2021-08-26 02:16:36,556 INFO L354 Elim1Store]: treesize reduction 84, result has 16.8 percent of original size [2021-08-26 02:16:36,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 66 [2021-08-26 02:16:36,585 INFO L354 Elim1Store]: treesize reduction 76, result has 24.8 percent of original size [2021-08-26 02:16:36,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 61 [2021-08-26 02:16:36,619 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-26 02:16:36,619 INFO L388 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 11 treesize of output 11 [2021-08-26 02:16:36,831 INFO L354 Elim1Store]: treesize reduction 118, result has 16.9 percent of original size [2021-08-26 02:16:36,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 101 treesize of output 85 [2021-08-26 02:16:36,858 INFO L354 Elim1Store]: treesize reduction 146, result has 16.1 percent of original size [2021-08-26 02:16:36,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 94 [2021-08-26 02:16:37,817 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-08-26 02:16:37,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 64 [2021-08-26 02:16:37,823 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-08-26 02:16:37,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 26 [2021-08-26 02:16:37,837 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-26 02:16:37,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153903371] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:16:37,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:16:37,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-08-26 02:16:37,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569286598] [2021-08-26 02:16:37,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-26 02:16:37,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:16:37,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-26 02:16:37,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-08-26 02:16:37,839 INFO L87 Difference]: Start difference. First operand 260 states and 296 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:43,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:16:43,766 INFO L93 Difference]: Finished difference Result 384 states and 431 transitions. [2021-08-26 02:16:43,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-26 02:16:43,767 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 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) Word has length 46 [2021-08-26 02:16:43,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:16:43,768 INFO L225 Difference]: With dead ends: 384 [2021-08-26 02:16:43,768 INFO L226 Difference]: Without dead ends: 368 [2021-08-26 02:16:43,769 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 269.0ms TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2021-08-26 02:16:43,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-08-26 02:16:43,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 313. [2021-08-26 02:16:43,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 309 states have (on average 1.1521035598705502) internal successors, (356), 312 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:43,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 356 transitions. [2021-08-26 02:16:43,810 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 356 transitions. Word has length 46 [2021-08-26 02:16:43,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:16:43,811 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 356 transitions. [2021-08-26 02:16:43,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:43,811 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 356 transitions. [2021-08-26 02:16:43,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-26 02:16:43,812 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:16:43,812 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:16:43,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-26 02:16:44,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-08-26 02:16:44,033 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:16:44,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:16:44,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1510903672, now seen corresponding path program 2 times [2021-08-26 02:16:44,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:16:44,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291779441] [2021-08-26 02:16:44,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:16:44,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:16:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:16:44,262 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:16:44,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:16:44,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291779441] [2021-08-26 02:16:44,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291779441] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:16:44,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566377104] [2021-08-26 02:16:44,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 02:16:44,264 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:16:44,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:16:44,265 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:16:44,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-26 02:16:45,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 02:16:45,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:16:45,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2021-08-26 02:16:45,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:16:45,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:16:45,724 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-26 02:16:45,728 INFO L388 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 11 treesize of output 11 [2021-08-26 02:16:45,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:16:45,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:16:45,930 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:16:45,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 57 [2021-08-26 02:16:45,935 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-26 02:16:45,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 66 [2021-08-26 02:16:46,531 INFO L354 Elim1Store]: treesize reduction 46, result has 6.1 percent of original size [2021-08-26 02:16:46,532 INFO L388 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 90 treesize of output 52 [2021-08-26 02:16:46,543 INFO L354 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2021-08-26 02:16:46,543 INFO L388 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 26 [2021-08-26 02:16:46,563 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:16:46,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566377104] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:16:46,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:16:46,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-08-26 02:16:46,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454128748] [2021-08-26 02:16:46,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-26 02:16:46,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:16:46,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-26 02:16:46,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-08-26 02:16:46,569 INFO L87 Difference]: Start difference. First operand 313 states and 356 transitions. Second operand has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:53,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:16:53,303 INFO L93 Difference]: Finished difference Result 467 states and 522 transitions. [2021-08-26 02:16:53,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-26 02:16:53,304 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 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) Word has length 46 [2021-08-26 02:16:53,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:16:53,305 INFO L225 Difference]: With dead ends: 467 [2021-08-26 02:16:53,305 INFO L226 Difference]: Without dead ends: 395 [2021-08-26 02:16:53,306 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 534.5ms TimeCoverageRelationStatistics Valid=157, Invalid=655, Unknown=0, NotChecked=0, Total=812 [2021-08-26 02:16:53,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-08-26 02:16:53,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 278. [2021-08-26 02:16:53,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 274 states have (on average 1.145985401459854) internal successors, (314), 277 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:53,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 314 transitions. [2021-08-26 02:16:53,330 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 314 transitions. Word has length 46 [2021-08-26 02:16:53,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:16:53,330 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 314 transitions. [2021-08-26 02:16:53,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:16:53,330 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 314 transitions. [2021-08-26 02:16:53,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-26 02:16:53,331 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:16:53,331 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:16:53,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-26 02:16:53,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:16:53,549 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:16:53,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:16:53,550 INFO L82 PathProgramCache]: Analyzing trace with hash 38218916, now seen corresponding path program 1 times [2021-08-26 02:16:53,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:16:53,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022528867] [2021-08-26 02:16:53,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:16:53,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:16:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:16:53,960 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-26 02:16:53,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:16:53,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022528867] [2021-08-26 02:16:53,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022528867] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:16:53,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645996525] [2021-08-26 02:16:53,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:16:53,961 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:16:53,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:16:53,962 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:16:53,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-26 02:16:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:16:55,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 34 conjunts are in the unsatisfiable core [2021-08-26 02:16:55,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:16:55,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:55,767 INFO L354 Elim1Store]: treesize reduction 46, result has 27.0 percent of original size [2021-08-26 02:16:55,767 INFO L388 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 2 case distinctions, treesize of input 79 treesize of output 69 [2021-08-26 02:16:55,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:55,794 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-08-26 02:16:55,795 INFO L388 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 2 case distinctions, treesize of input 66 treesize of output 64 [2021-08-26 02:16:56,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:16:56,337 INFO L354 Elim1Store]: treesize reduction 60, result has 25.9 percent of original size [2021-08-26 02:16:56,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 83 treesize of output 92 [2021-08-26 02:16:56,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:16:56,383 INFO L354 Elim1Store]: treesize reduction 60, result has 25.9 percent of original size [2021-08-26 02:16:56,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 86 treesize of output 95 [2021-08-26 02:16:58,773 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 02:16:58,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 31 [2021-08-26 02:16:58,777 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 02:16:58,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2021-08-26 02:16:58,809 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:16:58,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645996525] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:16:58,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:16:58,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-26 02:16:58,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946805000] [2021-08-26 02:16:58,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-26 02:16:58,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:16:58,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-26 02:16:58,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2021-08-26 02:16:58,814 INFO L87 Difference]: Start difference. First operand 278 states and 314 transitions. Second operand has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:17:10,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:17:10,202 INFO L93 Difference]: Finished difference Result 685 states and 763 transitions. [2021-08-26 02:17:10,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-26 02:17:10,202 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 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) Word has length 46 [2021-08-26 02:17:10,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:17:10,204 INFO L225 Difference]: With dead ends: 685 [2021-08-26 02:17:10,204 INFO L226 Difference]: Without dead ends: 509 [2021-08-26 02:17:10,205 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 3503.4ms TimeCoverageRelationStatistics Valid=496, Invalid=2154, Unknown=2, NotChecked=0, Total=2652 [2021-08-26 02:17:10,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2021-08-26 02:17:10,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 348. [2021-08-26 02:17:10,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 344 states have (on average 1.1511627906976745) internal successors, (396), 347 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:17:10,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 396 transitions. [2021-08-26 02:17:10,279 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 396 transitions. Word has length 46 [2021-08-26 02:17:10,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:17:10,279 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 396 transitions. [2021-08-26 02:17:10,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:17:10,279 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 396 transitions. [2021-08-26 02:17:10,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-26 02:17:10,280 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:17:10,280 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:17:10,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-26 02:17:10,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-08-26 02:17:10,501 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:17:10,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:17:10,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1203883507, now seen corresponding path program 1 times [2021-08-26 02:17:10,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:17:10,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330561504] [2021-08-26 02:17:10,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:17:10,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:17:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:17:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-26 02:17:10,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:17:10,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330561504] [2021-08-26 02:17:10,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330561504] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:17:10,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:17:10,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 02:17:10,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960078977] [2021-08-26 02:17:10,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 02:17:10,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:17:10,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 02:17:10,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:17:10,604 INFO L87 Difference]: Start difference. First operand 348 states and 396 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:17:10,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:17:10,793 INFO L93 Difference]: Finished difference Result 550 states and 623 transitions. [2021-08-26 02:17:10,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 02:17:10,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) Word has length 48 [2021-08-26 02:17:10,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:17:10,795 INFO L225 Difference]: With dead ends: 550 [2021-08-26 02:17:10,795 INFO L226 Difference]: Without dead ends: 354 [2021-08-26 02:17:10,797 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 44.4ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-26 02:17:10,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-08-26 02:17:10,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 342. [2021-08-26 02:17:10,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 338 states have (on average 1.1390532544378698) internal successors, (385), 341 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:17:10,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 385 transitions. [2021-08-26 02:17:10,851 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 385 transitions. Word has length 48 [2021-08-26 02:17:10,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:17:10,851 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 385 transitions. [2021-08-26 02:17:10,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:17:10,851 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 385 transitions. [2021-08-26 02:17:10,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-26 02:17:10,854 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:17:10,854 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:17:10,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-26 02:17:10,855 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:17:10,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:17:10,855 INFO L82 PathProgramCache]: Analyzing trace with hash -182815153, now seen corresponding path program 1 times [2021-08-26 02:17:10,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:17:10,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541684906] [2021-08-26 02:17:10,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:17:10,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:17:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:17:11,186 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:17:11,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:17:11,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541684906] [2021-08-26 02:17:11,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541684906] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:17:11,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661543160] [2021-08-26 02:17:11,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:17:11,187 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:17:11,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:17:11,192 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:17:11,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-26 02:17:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:17:12,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 33 conjunts are in the unsatisfiable core [2021-08-26 02:17:12,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:17:12,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:17:12,780 INFO L388 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 13 treesize of output 9 [2021-08-26 02:17:12,785 INFO L388 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 13 treesize of output 9 [2021-08-26 02:17:12,951 INFO L354 Elim1Store]: treesize reduction 84, result has 16.8 percent of original size [2021-08-26 02:17:12,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 66 [2021-08-26 02:17:12,984 INFO L354 Elim1Store]: treesize reduction 76, result has 24.8 percent of original size [2021-08-26 02:17:12,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 61 [2021-08-26 02:17:13,031 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:17:13,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:17:13,319 INFO L354 Elim1Store]: treesize reduction 31, result has 18.4 percent of original size [2021-08-26 02:17:13,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 81 [2021-08-26 02:17:13,330 INFO L354 Elim1Store]: treesize reduction 31, result has 18.4 percent of original size [2021-08-26 02:17:13,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 77 [2021-08-26 02:17:13,785 INFO L354 Elim1Store]: treesize reduction 282, result has 10.5 percent of original size [2021-08-26 02:17:13,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 196 treesize of output 139 [2021-08-26 02:17:13,861 INFO L354 Elim1Store]: treesize reduction 346, result has 10.6 percent of original size [2021-08-26 02:17:13,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 160 treesize of output 136 [2021-08-26 02:17:13,894 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:17:13,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 124 treesize of output 139 [2021-08-26 02:17:14,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:15,201 INFO L354 Elim1Store]: treesize reduction 1222, result has 9.5 percent of original size [2021-08-26 02:17:15,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 24 case distinctions, treesize of input 938 treesize of output 494 [2021-08-26 02:17:15,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:15,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:15,565 INFO L354 Elim1Store]: treesize reduction 2512, result has 5.5 percent of original size [2021-08-26 02:17:15,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 811 treesize of output 710 [2021-08-26 02:17:15,608 INFO L354 Elim1Store]: treesize reduction 60, result has 52.8 percent of original size [2021-08-26 02:17:15,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 729 treesize of output 761 [2021-08-26 02:17:15,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:15,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:15,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:15,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:15,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:15,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:15,681 INFO L354 Elim1Store]: treesize reduction 48, result has 43.5 percent of original size [2021-08-26 02:17:15,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 7 case distinctions, treesize of input 182 treesize of output 136 [2021-08-26 02:17:15,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:15,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:15,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:15,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:15,773 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:15,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:15,782 INFO L354 Elim1Store]: treesize reduction 84, result has 1.2 percent of original size [2021-08-26 02:17:15,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 7 case distinctions, treesize of input 142 treesize of output 62 [2021-08-26 02:17:24,192 INFO L354 Elim1Store]: treesize reduction 324, result has 0.3 percent of original size [2021-08-26 02:17:24,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 11 new quantified variables, introduced 28 case distinctions, treesize of input 309 treesize of output 122 [2021-08-26 02:17:24,219 INFO L354 Elim1Store]: treesize reduction 324, result has 0.3 percent of original size [2021-08-26 02:17:24,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 98 treesize of output 58 [2021-08-26 02:17:24,239 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:17:24,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661543160] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:17:24,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:17:24,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 16 [2021-08-26 02:17:24,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127326616] [2021-08-26 02:17:24,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-26 02:17:24,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:17:24,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-26 02:17:24,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=180, Unknown=3, NotChecked=0, Total=240 [2021-08-26 02:17:24,241 INFO L87 Difference]: Start difference. First operand 342 states and 385 transitions. Second operand has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:18:41,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:18:41,669 INFO L93 Difference]: Finished difference Result 527 states and 592 transitions. [2021-08-26 02:18:41,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-26 02:18:41,672 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 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) Word has length 48 [2021-08-26 02:18:41,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:18:41,673 INFO L225 Difference]: With dead ends: 527 [2021-08-26 02:18:41,673 INFO L226 Difference]: Without dead ends: 443 [2021-08-26 02:18:41,674 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 14635.2ms TimeCoverageRelationStatistics Valid=209, Invalid=714, Unknown=7, NotChecked=0, Total=930 [2021-08-26 02:18:41,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-08-26 02:18:41,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 305. [2021-08-26 02:18:41,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 301 states have (on average 1.1262458471760797) internal successors, (339), 304 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:18:41,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 339 transitions. [2021-08-26 02:18:41,695 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 339 transitions. Word has length 48 [2021-08-26 02:18:41,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:18:41,695 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 339 transitions. [2021-08-26 02:18:41,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:18:41,695 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 339 transitions. [2021-08-26 02:18:41,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-26 02:18:41,696 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:18:41,696 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:18:41,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-08-26 02:18:41,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:18:41,897 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:18:41,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:18:41,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1503855153, now seen corresponding path program 1 times [2021-08-26 02:18:41,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:18:41,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905804699] [2021-08-26 02:18:41,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:18:41,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:18:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:18:42,759 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:18:42,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:18:42,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905804699] [2021-08-26 02:18:42,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905804699] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:18:42,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602607413] [2021-08-26 02:18:42,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:18:42,760 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:18:42,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:18:42,762 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:18:42,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-26 02:18:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:18:44,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 40 conjunts are in the unsatisfiable core [2021-08-26 02:18:44,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:18:44,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:18:44,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:44,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:44,433 INFO L354 Elim1Store]: treesize reduction 190, result has 8.2 percent of original size [2021-08-26 02:18:44,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 157 treesize of output 146 [2021-08-26 02:18:44,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:44,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:18:44,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:44,449 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-26 02:18:44,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 90 [2021-08-26 02:18:44,466 INFO L354 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2021-08-26 02:18:44,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 94 [2021-08-26 02:18:44,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:18:44,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:44,829 INFO L354 Elim1Store]: treesize reduction 200, result has 13.4 percent of original size [2021-08-26 02:18:44,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 156 treesize of output 125 [2021-08-26 02:18:44,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:18:44,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:44,887 INFO L354 Elim1Store]: treesize reduction 290, result has 12.9 percent of original size [2021-08-26 02:18:44,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 143 treesize of output 139 [2021-08-26 02:18:44,913 INFO L354 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2021-08-26 02:18:44,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 130 treesize of output 147 [2021-08-26 02:18:45,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:45,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:18:45,399 INFO L354 Elim1Store]: treesize reduction 142, result has 13.4 percent of original size [2021-08-26 02:18:45,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 150 treesize of output 128 [2021-08-26 02:18:45,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:18:45,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:45,436 INFO L354 Elim1Store]: treesize reduction 208, result has 14.0 percent of original size [2021-08-26 02:18:45,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 146 treesize of output 157 [2021-08-26 02:18:45,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:45,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:18:46,117 INFO L354 Elim1Store]: treesize reduction 474, result has 9.0 percent of original size [2021-08-26 02:18:46,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 274 treesize of output 186 [2021-08-26 02:18:46,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:18:46,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:46,315 INFO L354 Elim1Store]: treesize reduction 696, result has 8.8 percent of original size [2021-08-26 02:18:46,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 22 case distinctions, treesize of input 238 treesize of output 220 [2021-08-26 02:18:46,387 INFO L354 Elim1Store]: treesize reduction 128, result has 27.3 percent of original size [2021-08-26 02:18:46,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 202 treesize of output 230 [2021-08-26 02:18:47,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:47,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:18:48,286 INFO L354 Elim1Store]: treesize reduction 1608, result has 9.1 percent of original size [2021-08-26 02:18:48,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 13 new quantified variables, introduced 39 case distinctions, treesize of input 1034 treesize of output 563 [2021-08-26 02:18:48,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:48,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:18:48,831 INFO L354 Elim1Store]: treesize reduction 3248, result has 5.7 percent of original size [2021-08-26 02:18:48,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 37 case distinctions, treesize of input 949 treesize of output 880 [2021-08-26 02:18:48,884 INFO L354 Elim1Store]: treesize reduction 118, result has 43.5 percent of original size [2021-08-26 02:18:48,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 893 treesize of output 941 [2021-08-26 02:18:49,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:49,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:49,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:49,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:49,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:18:49,083 INFO L354 Elim1Store]: treesize reduction 98, result has 1.0 percent of original size [2021-08-26 02:18:49,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 14 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 9 case distinctions, treesize of input 194 treesize of output 74 [2021-08-26 02:18:49,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:49,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:49,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 13 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 74 [2021-08-26 02:18:49,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:49,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:49,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:49,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:49,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:18:49,277 INFO L354 Elim1Store]: treesize reduction 81, result has 18.2 percent of original size [2021-08-26 02:18:49,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 14 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 9 case distinctions, treesize of input 209 treesize of output 108 [2021-08-26 02:18:49,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:49,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:49,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:49,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 14 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 194 treesize of output 82 [2021-08-26 02:18:49,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:49,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:49,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:18:49,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 14 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 80 [2021-08-26 02:19:01,019 INFO L354 Elim1Store]: treesize reduction 650, result has 0.5 percent of original size [2021-08-26 02:19:01,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 15 new quantified variables, introduced 55 case distinctions, treesize of input 424 treesize of output 167 [2021-08-26 02:19:01,151 INFO L354 Elim1Store]: treesize reduction 590, result has 0.5 percent of original size [2021-08-26 02:19:01,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 12 new quantified variables, introduced 55 case distinctions, treesize of input 134 treesize of output 88 [2021-08-26 02:19:01,162 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:19:01,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602607413] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:01,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:19:01,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 21 [2021-08-26 02:19:01,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437437853] [2021-08-26 02:19:01,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-26 02:19:01,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:19:01,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-26 02:19:01,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=340, Unknown=2, NotChecked=0, Total=420 [2021-08-26 02:19:01,163 INFO L87 Difference]: Start difference. First operand 305 states and 339 transitions. Second operand has 21 states, 21 states have (on average 4.238095238095238) internal successors, (89), 21 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:20:00,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:20:00,225 INFO L93 Difference]: Finished difference Result 503 states and 556 transitions. [2021-08-26 02:20:00,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-26 02:20:00,225 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.238095238095238) internal successors, (89), 21 states have internal predecessors, (89), 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) Word has length 48 [2021-08-26 02:20:00,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:20:00,226 INFO L225 Difference]: With dead ends: 503 [2021-08-26 02:20:00,226 INFO L226 Difference]: Without dead ends: 501 [2021-08-26 02:20:00,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 21993.6ms TimeCoverageRelationStatistics Valid=654, Invalid=2419, Unknown=7, NotChecked=0, Total=3080 [2021-08-26 02:20:00,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2021-08-26 02:20:00,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 305. [2021-08-26 02:20:00,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 301 states have (on average 1.1229235880398671) internal successors, (338), 304 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:20:00,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 338 transitions. [2021-08-26 02:20:00,247 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 338 transitions. Word has length 48 [2021-08-26 02:20:00,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:20:00,247 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 338 transitions. [2021-08-26 02:20:00,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.238095238095238) internal successors, (89), 21 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:20:00,247 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 338 transitions. [2021-08-26 02:20:00,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-26 02:20:00,248 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:20:00,248 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:20:00,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-08-26 02:20:00,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:20:00,473 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:20:00,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:20:00,473 INFO L82 PathProgramCache]: Analyzing trace with hash -553250079, now seen corresponding path program 1 times [2021-08-26 02:20:00,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:20:00,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142490784] [2021-08-26 02:20:00,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:20:00,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:20:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:20:00,833 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-26 02:20:00,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:20:00,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142490784] [2021-08-26 02:20:00,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142490784] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:20:00,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899061483] [2021-08-26 02:20:00,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:20:00,833 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:20:00,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:20:00,835 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:20:00,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-26 02:20:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:20:02,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 31 conjunts are in the unsatisfiable core [2021-08-26 02:20:02,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:20:03,224 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-08-26 02:20:03,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 36 [2021-08-26 02:20:03,238 INFO L354 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2021-08-26 02:20:03,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-08-26 02:20:03,260 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-26 02:20:03,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899061483] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:20:03,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:20:03,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-08-26 02:20:03,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895141551] [2021-08-26 02:20:03,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-26 02:20:03,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:20:03,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-26 02:20:03,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-08-26 02:20:03,263 INFO L87 Difference]: Start difference. First operand 305 states and 338 transitions. Second operand has 16 states, 16 states have (on average 5.625) internal successors, (90), 16 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:20:10,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:20:10,026 INFO L93 Difference]: Finished difference Result 568 states and 624 transitions. [2021-08-26 02:20:10,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-26 02:20:10,027 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.625) internal successors, (90), 16 states have internal predecessors, (90), 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) Word has length 49 [2021-08-26 02:20:10,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:20:10,028 INFO L225 Difference]: With dead ends: 568 [2021-08-26 02:20:10,028 INFO L226 Difference]: Without dead ends: 552 [2021-08-26 02:20:10,029 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 1353.2ms TimeCoverageRelationStatistics Valid=465, Invalid=2291, Unknown=0, NotChecked=0, Total=2756 [2021-08-26 02:20:10,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-08-26 02:20:10,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 363. [2021-08-26 02:20:10,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 359 states have (on average 1.139275766016713) internal successors, (409), 362 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:20:10,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 409 transitions. [2021-08-26 02:20:10,056 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 409 transitions. Word has length 49 [2021-08-26 02:20:10,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:20:10,056 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 409 transitions. [2021-08-26 02:20:10,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.625) internal successors, (90), 16 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:20:10,057 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 409 transitions. [2021-08-26 02:20:10,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-26 02:20:10,057 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:20:10,057 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:20:10,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-26 02:20:10,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-08-26 02:20:10,258 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:20:10,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:20:10,259 INFO L82 PathProgramCache]: Analyzing trace with hash -540886206, now seen corresponding path program 1 times [2021-08-26 02:20:10,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:20:10,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505589174] [2021-08-26 02:20:10,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:20:10,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:20:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:20:10,691 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:20:10,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:20:10,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505589174] [2021-08-26 02:20:10,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505589174] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:20:10,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15268951] [2021-08-26 02:20:10,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:20:10,692 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:20:10,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:20:10,693 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) [2021-08-26 02:20:10,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-08-26 02:20:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:20:12,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 40 conjunts are in the unsatisfiable core [2021-08-26 02:20:12,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:20:12,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:20:12,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:12,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:12,658 INFO L354 Elim1Store]: treesize reduction 190, result has 8.2 percent of original size [2021-08-26 02:20:12,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 157 treesize of output 146 [2021-08-26 02:20:12,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:12,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:12,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:12,671 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-26 02:20:12,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 90 [2021-08-26 02:20:12,685 INFO L354 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2021-08-26 02:20:12,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 94 [2021-08-26 02:20:13,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:13,105 INFO L354 Elim1Store]: treesize reduction 290, result has 12.9 percent of original size [2021-08-26 02:20:13,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 156 treesize of output 152 [2021-08-26 02:20:13,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:13,171 INFO L354 Elim1Store]: treesize reduction 200, result has 13.4 percent of original size [2021-08-26 02:20:13,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 143 treesize of output 112 [2021-08-26 02:20:13,204 INFO L354 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2021-08-26 02:20:13,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 130 treesize of output 147 [2021-08-26 02:20:13,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:13,776 INFO L354 Elim1Store]: treesize reduction 142, result has 13.4 percent of original size [2021-08-26 02:20:13,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 150 treesize of output 128 [2021-08-26 02:20:13,783 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:13,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:13,819 INFO L354 Elim1Store]: treesize reduction 208, result has 14.0 percent of original size [2021-08-26 02:20:13,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 146 treesize of output 157 [2021-08-26 02:20:14,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:14,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:14,659 INFO L354 Elim1Store]: treesize reduction 474, result has 9.0 percent of original size [2021-08-26 02:20:14,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 274 treesize of output 186 [2021-08-26 02:20:14,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:14,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:14,830 INFO L354 Elim1Store]: treesize reduction 696, result has 8.8 percent of original size [2021-08-26 02:20:14,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 22 case distinctions, treesize of input 238 treesize of output 220 [2021-08-26 02:20:14,886 INFO L354 Elim1Store]: treesize reduction 128, result has 27.3 percent of original size [2021-08-26 02:20:14,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 202 treesize of output 230 [2021-08-26 02:20:15,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:15,802 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:16,886 INFO L354 Elim1Store]: treesize reduction 1608, result has 9.1 percent of original size [2021-08-26 02:20:16,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 13 new quantified variables, introduced 39 case distinctions, treesize of input 1034 treesize of output 563 [2021-08-26 02:20:16,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:16,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:17,481 INFO L354 Elim1Store]: treesize reduction 3248, result has 5.7 percent of original size [2021-08-26 02:20:17,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 37 case distinctions, treesize of input 969 treesize of output 900 [2021-08-26 02:20:17,529 INFO L354 Elim1Store]: treesize reduction 118, result has 43.5 percent of original size [2021-08-26 02:20:17,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 899 treesize of output 947 [2021-08-26 02:20:17,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:17,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:17,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:17,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:17,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:17,593 INFO L354 Elim1Store]: treesize reduction 98, result has 1.0 percent of original size [2021-08-26 02:20:17,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 9 case distinctions, treesize of input 147 treesize of output 51 [2021-08-26 02:20:17,706 WARN L220 Elim1Store]: Array PQE input equivalent to false [2021-08-26 02:20:17,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:17,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:17,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:17,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 14 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 104 [2021-08-26 02:20:17,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:17,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:17,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 13 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 98 [2021-08-26 02:20:17,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:17,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:17,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:17,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:17,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:17,991 INFO L354 Elim1Store]: treesize reduction 91, result has 8.1 percent of original size [2021-08-26 02:20:17,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 9 case distinctions, treesize of input 233 treesize of output 123 [2021-08-26 02:20:35,387 INFO L354 Elim1Store]: treesize reduction 630, result has 0.5 percent of original size [2021-08-26 02:20:35,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 15 new quantified variables, introduced 55 case distinctions, treesize of input 420 treesize of output 165 [2021-08-26 02:20:35,551 INFO L354 Elim1Store]: treesize reduction 590, result has 0.5 percent of original size [2021-08-26 02:20:35,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 12 new quantified variables, introduced 55 case distinctions, treesize of input 132 treesize of output 86 [2021-08-26 02:20:35,561 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:20:35,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15268951] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:20:35,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:20:35,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-08-26 02:20:35,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415284077] [2021-08-26 02:20:35,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-26 02:20:35,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:20:35,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-26 02:20:35,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=266, Unknown=3, NotChecked=0, Total=342 [2021-08-26 02:20:35,563 INFO L87 Difference]: Start difference. First operand 363 states and 409 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:21:59,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:21:59,857 INFO L93 Difference]: Finished difference Result 578 states and 657 transitions. [2021-08-26 02:21:59,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-26 02:21:59,858 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 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) Word has length 51 [2021-08-26 02:21:59,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:21:59,860 INFO L225 Difference]: With dead ends: 578 [2021-08-26 02:21:59,860 INFO L226 Difference]: Without dead ends: 576 [2021-08-26 02:21:59,860 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 15345.2ms TimeCoverageRelationStatistics Valid=234, Invalid=753, Unknown=5, NotChecked=0, Total=992 [2021-08-26 02:21:59,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-08-26 02:21:59,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 332. [2021-08-26 02:21:59,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 328 states have (on average 1.1341463414634145) internal successors, (372), 331 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:21:59,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 372 transitions. [2021-08-26 02:21:59,901 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 372 transitions. Word has length 51 [2021-08-26 02:21:59,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:21:59,901 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 372 transitions. [2021-08-26 02:21:59,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:21:59,902 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 372 transitions. [2021-08-26 02:21:59,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-26 02:21:59,902 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:21:59,902 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:21:59,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-08-26 02:22:00,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:22:00,116 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:22:00,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:22:00,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1052798972, now seen corresponding path program 2 times [2021-08-26 02:22:00,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:22:00,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681503326] [2021-08-26 02:22:00,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:22:00,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:22:00,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:22:00,259 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-26 02:22:00,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:22:00,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681503326] [2021-08-26 02:22:00,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681503326] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:22:00,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283630458] [2021-08-26 02:22:00,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 02:22:00,260 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:22:00,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:22:00,261 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:22:00,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-26 02:22:02,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 02:22:02,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:22:02,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 35 conjunts are in the unsatisfiable core [2021-08-26 02:22:02,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:22:02,903 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 02:22:02,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 48 [2021-08-26 02:22:02,907 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-26 02:22:02,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2021-08-26 02:22:02,924 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-26 02:22:02,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283630458] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:22:02,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:22:02,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-08-26 02:22:02,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075354468] [2021-08-26 02:22:02,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-26 02:22:02,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:22:02,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-26 02:22:02,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-08-26 02:22:02,927 INFO L87 Difference]: Start difference. First operand 332 states and 372 transitions. Second operand has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:22:03,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:22:03,883 INFO L93 Difference]: Finished difference Result 523 states and 586 transitions. [2021-08-26 02:22:03,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-26 02:22:03,883 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 states have internal predecessors, (94), 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) Word has length 52 [2021-08-26 02:22:03,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:22:03,885 INFO L225 Difference]: With dead ends: 523 [2021-08-26 02:22:03,885 INFO L226 Difference]: Without dead ends: 482 [2021-08-26 02:22:03,886 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 210.0ms TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-08-26 02:22:03,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-08-26 02:22:03,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 379. [2021-08-26 02:22:03,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 375 states have (on average 1.1413333333333333) internal successors, (428), 378 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:22:03,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 428 transitions. [2021-08-26 02:22:03,927 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 428 transitions. Word has length 52 [2021-08-26 02:22:03,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:22:03,927 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 428 transitions. [2021-08-26 02:22:03,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:22:03,928 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 428 transitions. [2021-08-26 02:22:03,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-26 02:22:03,928 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:22:03,928 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:22:03,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-08-26 02:22:04,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:22:04,157 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:22:04,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:22:04,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1834750872, now seen corresponding path program 3 times [2021-08-26 02:22:04,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:22:04,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669559973] [2021-08-26 02:22:04,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:22:04,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:22:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:22:04,417 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:22:04,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:22:04,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669559973] [2021-08-26 02:22:04,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669559973] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:22:04,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77449240] [2021-08-26 02:22:04,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 02:22:04,417 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:22:04,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:22:04,418 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:22:04,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-08-26 02:22:06,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 02:22:06,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:22:06,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 37 conjunts are in the unsatisfiable core [2021-08-26 02:22:06,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:22:06,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:22:06,763 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:22:06,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:22:06,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:22:06,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:22:06,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:07,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-08-26 02:22:07,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:07,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-08-26 02:22:07,298 INFO L354 Elim1Store]: treesize reduction 58, result has 20.5 percent of original size [2021-08-26 02:22:07,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 165 treesize of output 105 [2021-08-26 02:22:07,321 INFO L354 Elim1Store]: treesize reduction 82, result has 18.8 percent of original size [2021-08-26 02:22:07,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 129 treesize of output 102 [2021-08-26 02:22:07,334 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-08-26 02:22:07,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 95 [2021-08-26 02:22:07,603 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-08-26 02:22:07,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 153 treesize of output 95 [2021-08-26 02:22:07,616 INFO L354 Elim1Store]: treesize reduction 93, result has 10.6 percent of original size [2021-08-26 02:22:07,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 141 treesize of output 141 [2021-08-26 02:22:10,667 INFO L354 Elim1Store]: treesize reduction 107, result has 7.0 percent of original size [2021-08-26 02:22:10,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 163 treesize of output 82 [2021-08-26 02:22:10,684 INFO L354 Elim1Store]: treesize reduction 82, result has 3.5 percent of original size [2021-08-26 02:22:10,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 64 treesize of output 42 [2021-08-26 02:22:10,702 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:22:10,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77449240] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:22:10,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:22:10,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-08-26 02:22:10,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115705289] [2021-08-26 02:22:10,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-26 02:22:10,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:22:10,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-26 02:22:10,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-08-26 02:22:10,704 INFO L87 Difference]: Start difference. First operand 379 states and 428 transitions. Second operand has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:22:12,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:22:12,486 INFO L93 Difference]: Finished difference Result 850 states and 969 transitions. [2021-08-26 02:22:12,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-26 02:22:12,487 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 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) Word has length 53 [2021-08-26 02:22:12,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:22:12,489 INFO L225 Difference]: With dead ends: 850 [2021-08-26 02:22:12,489 INFO L226 Difference]: Without dead ends: 697 [2021-08-26 02:22:12,489 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 3726.2ms TimeCoverageRelationStatistics Valid=331, Invalid=1309, Unknown=0, NotChecked=0, Total=1640 [2021-08-26 02:22:12,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2021-08-26 02:22:12,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 501. [2021-08-26 02:22:12,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 497 states have (on average 1.13682092555332) internal successors, (565), 500 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:22:12,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 565 transitions. [2021-08-26 02:22:12,544 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 565 transitions. Word has length 53 [2021-08-26 02:22:12,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:22:12,544 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 565 transitions. [2021-08-26 02:22:12,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:22:12,545 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 565 transitions. [2021-08-26 02:22:12,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-26 02:22:12,546 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:22:12,546 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:22:12,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-08-26 02:22:12,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:22:12,773 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:22:12,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:22:12,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1063131928, now seen corresponding path program 1 times [2021-08-26 02:22:12,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:22:12,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168691988] [2021-08-26 02:22:12,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:22:12,773 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:22:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:22:13,153 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:22:13,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:22:13,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168691988] [2021-08-26 02:22:13,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168691988] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:22:13,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463229726] [2021-08-26 02:22:13,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:22:13,155 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:22:13,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:22:13,156 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:22:13,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-08-26 02:22:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:22:15,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 42 conjunts are in the unsatisfiable core [2021-08-26 02:22:15,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:22:15,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:22:15,712 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:22:15,713 INFO L388 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 1 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:22:15,731 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:22:15,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:22:15,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:22:15,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:15,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:15,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:22:15,990 INFO L354 Elim1Store]: treesize reduction 118, result has 16.9 percent of original size [2021-08-26 02:22:15,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 320 treesize of output 248 [2021-08-26 02:22:15,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:15,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:15,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:22:16,016 INFO L354 Elim1Store]: treesize reduction 50, result has 32.4 percent of original size [2021-08-26 02:22:16,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 102 [2021-08-26 02:22:16,042 INFO L354 Elim1Store]: treesize reduction 60, result has 34.1 percent of original size [2021-08-26 02:22:16,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 123 treesize of output 140 [2021-08-26 02:22:16,556 INFO L354 Elim1Store]: treesize reduction 196, result has 15.5 percent of original size [2021-08-26 02:22:16,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 255 treesize of output 152 [2021-08-26 02:22:16,617 INFO L354 Elim1Store]: treesize reduction 352, result has 14.6 percent of original size [2021-08-26 02:22:16,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 16 case distinctions, treesize of input 219 treesize of output 198 [2021-08-26 02:22:16,637 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-08-26 02:22:16,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 183 treesize of output 187 [2021-08-26 02:22:17,108 INFO L354 Elim1Store]: treesize reduction 252, result has 14.6 percent of original size [2021-08-26 02:22:17,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 238 treesize of output 141 [2021-08-26 02:22:17,179 INFO L354 Elim1Store]: treesize reduction 512, result has 12.8 percent of original size [2021-08-26 02:22:17,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 226 treesize of output 232 [2021-08-26 02:22:18,773 INFO L354 Elim1Store]: treesize reduction 382, result has 3.8 percent of original size [2021-08-26 02:22:18,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 14 new quantified variables, introduced 36 case distinctions, treesize of input 288 treesize of output 143 [2021-08-26 02:22:18,848 INFO L354 Elim1Store]: treesize reduction 334, result has 2.1 percent of original size [2021-08-26 02:22:18,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 36 case distinctions, treesize of input 98 treesize of output 68 [2021-08-26 02:22:18,860 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:22:18,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463229726] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:22:18,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:22:18,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2021-08-26 02:22:18,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272332964] [2021-08-26 02:22:18,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-26 02:22:18,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:22:18,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-26 02:22:18,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-08-26 02:22:18,862 INFO L87 Difference]: Start difference. First operand 501 states and 565 transitions. Second operand has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:22:31,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:22:31,572 INFO L93 Difference]: Finished difference Result 805 states and 909 transitions. [2021-08-26 02:22:31,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-26 02:22:31,572 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 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) Word has length 53 [2021-08-26 02:22:31,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:22:31,574 INFO L225 Difference]: With dead ends: 805 [2021-08-26 02:22:31,574 INFO L226 Difference]: Without dead ends: 803 [2021-08-26 02:22:31,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 5950.3ms TimeCoverageRelationStatistics Valid=269, Invalid=1211, Unknown=2, NotChecked=0, Total=1482 [2021-08-26 02:22:31,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2021-08-26 02:22:31,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 566. [2021-08-26 02:22:31,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 562 states have (on average 1.1370106761565837) internal successors, (639), 565 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:22:31,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 639 transitions. [2021-08-26 02:22:31,623 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 639 transitions. Word has length 53 [2021-08-26 02:22:31,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:22:31,623 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 639 transitions. [2021-08-26 02:22:31,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:22:31,623 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 639 transitions. [2021-08-26 02:22:31,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-26 02:22:31,624 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:22:31,625 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:22:31,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-08-26 02:22:31,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-08-26 02:22:31,835 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:22:31,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:22:31,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1165008232, now seen corresponding path program 2 times [2021-08-26 02:22:31,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:22:31,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123889680] [2021-08-26 02:22:31,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:22:31,836 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:22:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:22:32,298 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:22:32,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:22:32,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123889680] [2021-08-26 02:22:32,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123889680] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:22:32,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793487578] [2021-08-26 02:22:32,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 02:22:32,299 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:22:32,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:22:32,301 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:22:32,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-08-26 02:22:34,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 02:22:34,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:22:34,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 46 conjunts are in the unsatisfiable core [2021-08-26 02:22:34,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:22:34,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:22:34,999 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-08-26 02:22:34,999 INFO L388 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 1 case distinctions, treesize of input 27 treesize of output 19 [2021-08-26 02:22:35,017 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:22:35,017 INFO L388 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 1 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:22:35,042 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:22:35,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:22:35,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:35,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:35,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:22:35,298 INFO L354 Elim1Store]: treesize reduction 118, result has 16.9 percent of original size [2021-08-26 02:22:35,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 320 treesize of output 248 [2021-08-26 02:22:35,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:35,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:35,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:22:35,324 INFO L354 Elim1Store]: treesize reduction 50, result has 32.4 percent of original size [2021-08-26 02:22:35,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 102 [2021-08-26 02:22:35,350 INFO L354 Elim1Store]: treesize reduction 60, result has 34.1 percent of original size [2021-08-26 02:22:35,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 123 treesize of output 140 [2021-08-26 02:22:35,882 INFO L354 Elim1Store]: treesize reduction 196, result has 15.5 percent of original size [2021-08-26 02:22:35,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 261 treesize of output 158 [2021-08-26 02:22:35,947 INFO L354 Elim1Store]: treesize reduction 352, result has 14.6 percent of original size [2021-08-26 02:22:35,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 16 case distinctions, treesize of input 225 treesize of output 204 [2021-08-26 02:22:35,998 INFO L354 Elim1Store]: treesize reduction 138, result has 27.4 percent of original size [2021-08-26 02:22:35,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 189 treesize of output 219 [2021-08-26 02:22:37,257 INFO L354 Elim1Store]: treesize reduction 1158, result has 10.2 percent of original size [2021-08-26 02:22:37,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 12 new quantified variables, introduced 31 case distinctions, treesize of input 999 treesize of output 508 [2021-08-26 02:22:37,619 INFO L354 Elim1Store]: treesize reduction 2304, result has 7.4 percent of original size [2021-08-26 02:22:37,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 903 treesize of output 824 [2021-08-26 02:22:37,657 INFO L354 Elim1Store]: treesize reduction 146, result has 32.7 percent of original size [2021-08-26 02:22:37,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 862 treesize of output 888 [2021-08-26 02:22:37,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:37,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:37,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:37,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:37,780 INFO L354 Elim1Store]: treesize reduction 70, result has 1.4 percent of original size [2021-08-26 02:22:37,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 12 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 8 case distinctions, treesize of input 232 treesize of output 96 [2021-08-26 02:22:38,043 INFO L354 Elim1Store]: treesize reduction 332, result has 7.0 percent of original size [2021-08-26 02:22:38,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 2 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 32 case distinctions, treesize of input 468 treesize of output 272 [2021-08-26 02:22:40,564 INFO L354 Elim1Store]: treesize reduction 522, result has 4.9 percent of original size [2021-08-26 02:22:40,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 17 new quantified variables, introduced 55 case distinctions, treesize of input 403 treesize of output 183 [2021-08-26 02:22:40,676 INFO L354 Elim1Store]: treesize reduction 474, result has 1.5 percent of original size [2021-08-26 02:22:40,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 13 new quantified variables, introduced 55 case distinctions, treesize of input 132 treesize of output 94 [2021-08-26 02:22:40,687 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:22:40,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793487578] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:22:40,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:22:40,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2021-08-26 02:22:40,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749574540] [2021-08-26 02:22:40,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-26 02:22:40,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:22:40,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-26 02:22:40,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-08-26 02:22:40,688 INFO L87 Difference]: Start difference. First operand 566 states and 639 transitions. Second operand has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:22:47,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:22:47,111 INFO L93 Difference]: Finished difference Result 1049 states and 1188 transitions. [2021-08-26 02:22:47,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-26 02:22:47,112 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 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) Word has length 53 [2021-08-26 02:22:47,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:22:47,114 INFO L225 Difference]: With dead ends: 1049 [2021-08-26 02:22:47,114 INFO L226 Difference]: Without dead ends: 1047 [2021-08-26 02:22:47,115 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 1736.0ms TimeCoverageRelationStatistics Valid=287, Invalid=1273, Unknown=0, NotChecked=0, Total=1560 [2021-08-26 02:22:47,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2021-08-26 02:22:47,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 570. [2021-08-26 02:22:47,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 566 states have (on average 1.1360424028268552) internal successors, (643), 569 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:22:47,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 643 transitions. [2021-08-26 02:22:47,187 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 643 transitions. Word has length 53 [2021-08-26 02:22:47,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:22:47,187 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 643 transitions. [2021-08-26 02:22:47,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:22:47,187 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 643 transitions. [2021-08-26 02:22:47,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-26 02:22:47,188 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:22:47,188 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:22:47,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-08-26 02:22:47,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-08-26 02:22:47,405 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:22:47,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:22:47,405 INFO L82 PathProgramCache]: Analyzing trace with hash 678538585, now seen corresponding path program 1 times [2021-08-26 02:22:47,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:22:47,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048631215] [2021-08-26 02:22:47,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:22:47,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:22:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:22:47,856 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:22:47,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:22:47,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048631215] [2021-08-26 02:22:47,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048631215] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:22:47,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216989763] [2021-08-26 02:22:47,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:22:47,857 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:22:47,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:22:47,857 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:22:47,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-08-26 02:22:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:22:50,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 42 conjunts are in the unsatisfiable core [2021-08-26 02:22:50,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:22:50,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:22:50,866 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:22:50,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:22:50,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:22:50,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:22:51,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:51,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:51,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:22:51,136 INFO L354 Elim1Store]: treesize reduction 118, result has 16.9 percent of original size [2021-08-26 02:22:51,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 320 treesize of output 248 [2021-08-26 02:22:51,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:51,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:51,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:22:51,163 INFO L354 Elim1Store]: treesize reduction 50, result has 32.4 percent of original size [2021-08-26 02:22:51,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 102 [2021-08-26 02:22:51,191 INFO L354 Elim1Store]: treesize reduction 60, result has 34.1 percent of original size [2021-08-26 02:22:51,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 123 treesize of output 140 [2021-08-26 02:22:51,714 INFO L354 Elim1Store]: treesize reduction 196, result has 15.5 percent of original size [2021-08-26 02:22:51,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 255 treesize of output 152 [2021-08-26 02:22:51,780 INFO L354 Elim1Store]: treesize reduction 352, result has 14.6 percent of original size [2021-08-26 02:22:51,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 16 case distinctions, treesize of input 219 treesize of output 198 [2021-08-26 02:22:51,803 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-08-26 02:22:51,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 183 treesize of output 187 [2021-08-26 02:22:52,325 INFO L354 Elim1Store]: treesize reduction 252, result has 14.6 percent of original size [2021-08-26 02:22:52,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 238 treesize of output 141 [2021-08-26 02:22:52,397 INFO L354 Elim1Store]: treesize reduction 512, result has 12.8 percent of original size [2021-08-26 02:22:52,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 226 treesize of output 232 [2021-08-26 02:22:56,367 INFO L354 Elim1Store]: treesize reduction 382, result has 3.8 percent of original size [2021-08-26 02:22:56,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 14 new quantified variables, introduced 36 case distinctions, treesize of input 284 treesize of output 139 [2021-08-26 02:22:56,447 INFO L354 Elim1Store]: treesize reduction 334, result has 2.1 percent of original size [2021-08-26 02:22:56,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 36 case distinctions, treesize of input 96 treesize of output 66 [2021-08-26 02:22:56,457 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:22:56,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216989763] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:22:56,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:22:56,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2021-08-26 02:22:56,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198450681] [2021-08-26 02:22:56,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-26 02:22:56,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:22:56,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-26 02:22:56,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-08-26 02:22:56,459 INFO L87 Difference]: Start difference. First operand 570 states and 643 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:23:03,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:23:03,043 INFO L93 Difference]: Finished difference Result 876 states and 986 transitions. [2021-08-26 02:23:03,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-26 02:23:03,043 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 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) Word has length 56 [2021-08-26 02:23:03,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:23:03,045 INFO L225 Difference]: With dead ends: 876 [2021-08-26 02:23:03,045 INFO L226 Difference]: Without dead ends: 874 [2021-08-26 02:23:03,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3614.1ms TimeCoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2021-08-26 02:23:03,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-08-26 02:23:03,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 641. [2021-08-26 02:23:03,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 637 states have (on average 1.1350078492935636) internal successors, (723), 640 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:23:03,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 723 transitions. [2021-08-26 02:23:03,116 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 723 transitions. Word has length 56 [2021-08-26 02:23:03,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:23:03,117 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 723 transitions. [2021-08-26 02:23:03,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:23:03,117 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 723 transitions. [2021-08-26 02:23:03,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-26 02:23:03,117 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:23:03,118 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:23:03,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-08-26 02:23:03,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:23:03,318 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:23:03,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:23:03,319 INFO L82 PathProgramCache]: Analyzing trace with hash 874591705, now seen corresponding path program 2 times [2021-08-26 02:23:03,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:23:03,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127687517] [2021-08-26 02:23:03,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:23:03,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:23:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:23:03,865 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:23:03,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:23:03,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127687517] [2021-08-26 02:23:03,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127687517] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:23:03,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134501757] [2021-08-26 02:23:03,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 02:23:03,866 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:23:03,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:23:03,867 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:23:03,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-08-26 02:23:07,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 02:23:07,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:23:07,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 46 conjunts are in the unsatisfiable core [2021-08-26 02:23:07,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:23:07,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:23:07,168 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:23:07,168 INFO L388 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 1 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:23:07,184 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-08-26 02:23:07,184 INFO L388 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 1 case distinctions, treesize of input 27 treesize of output 19 [2021-08-26 02:23:07,205 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:23:07,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:23:07,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:07,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:07,482 INFO L354 Elim1Store]: treesize reduction 498, result has 5.9 percent of original size [2021-08-26 02:23:07,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 190 treesize of output 185 [2021-08-26 02:23:07,526 INFO L354 Elim1Store]: treesize reduction 60, result has 34.1 percent of original size [2021-08-26 02:23:07,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 230 treesize of output 247 [2021-08-26 02:23:07,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:07,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:07,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:23:07,568 INFO L354 Elim1Store]: treesize reduction 86, result has 21.8 percent of original size [2021-08-26 02:23:07,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 142 treesize of output 137 [2021-08-26 02:23:08,116 INFO L354 Elim1Store]: treesize reduction 196, result has 15.5 percent of original size [2021-08-26 02:23:08,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 261 treesize of output 158 [2021-08-26 02:23:08,182 INFO L354 Elim1Store]: treesize reduction 352, result has 14.6 percent of original size [2021-08-26 02:23:08,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 16 case distinctions, treesize of input 225 treesize of output 204 [2021-08-26 02:23:08,225 INFO L354 Elim1Store]: treesize reduction 138, result has 27.4 percent of original size [2021-08-26 02:23:08,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 189 treesize of output 219 [2021-08-26 02:23:09,570 INFO L354 Elim1Store]: treesize reduction 1158, result has 10.2 percent of original size [2021-08-26 02:23:09,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 12 new quantified variables, introduced 31 case distinctions, treesize of input 999 treesize of output 508 [2021-08-26 02:23:09,936 INFO L354 Elim1Store]: treesize reduction 2304, result has 7.4 percent of original size [2021-08-26 02:23:09,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 903 treesize of output 824 [2021-08-26 02:23:09,997 INFO L354 Elim1Store]: treesize reduction 146, result has 32.7 percent of original size [2021-08-26 02:23:09,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 830 treesize of output 856 [2021-08-26 02:23:10,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:10,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:10,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:10,071 INFO L354 Elim1Store]: treesize reduction 78, result has 29.7 percent of original size [2021-08-26 02:23:10,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 11 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 12 case distinctions, treesize of input 219 treesize of output 147 [2021-08-26 02:23:10,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:10,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:10,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:10,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:10,208 INFO L354 Elim1Store]: treesize reduction 70, result has 1.4 percent of original size [2021-08-26 02:23:10,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 12 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 8 case distinctions, treesize of input 170 treesize of output 58 [2021-08-26 02:23:13,108 INFO L354 Elim1Store]: treesize reduction 522, result has 4.9 percent of original size [2021-08-26 02:23:13,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 17 new quantified variables, introduced 55 case distinctions, treesize of input 399 treesize of output 179 [2021-08-26 02:23:13,218 INFO L354 Elim1Store]: treesize reduction 474, result has 1.5 percent of original size [2021-08-26 02:23:13,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 13 new quantified variables, introduced 55 case distinctions, treesize of input 130 treesize of output 92 [2021-08-26 02:23:13,232 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:23:13,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134501757] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:23:13,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:23:13,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2021-08-26 02:23:13,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374249542] [2021-08-26 02:23:13,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-26 02:23:13,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:23:13,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-26 02:23:13,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-08-26 02:23:13,234 INFO L87 Difference]: Start difference. First operand 641 states and 723 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:23:22,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:23:22,099 INFO L93 Difference]: Finished difference Result 1051 states and 1188 transitions. [2021-08-26 02:23:22,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-26 02:23:22,100 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 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) Word has length 56 [2021-08-26 02:23:22,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:23:22,102 INFO L225 Difference]: With dead ends: 1051 [2021-08-26 02:23:22,102 INFO L226 Difference]: Without dead ends: 1049 [2021-08-26 02:23:22,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 1902.5ms TimeCoverageRelationStatistics Valid=287, Invalid=1273, Unknown=0, NotChecked=0, Total=1560 [2021-08-26 02:23:22,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2021-08-26 02:23:22,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 576. [2021-08-26 02:23:22,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 572 states have (on average 1.1346153846153846) internal successors, (649), 575 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:23:22,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 649 transitions. [2021-08-26 02:23:22,164 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 649 transitions. Word has length 56 [2021-08-26 02:23:22,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:23:22,164 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 649 transitions. [2021-08-26 02:23:22,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:23:22,165 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 649 transitions. [2021-08-26 02:23:22,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-26 02:23:22,166 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:23:22,166 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:23:22,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-08-26 02:23:22,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:23:22,381 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:23:22,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:23:22,381 INFO L82 PathProgramCache]: Analyzing trace with hash 460975040, now seen corresponding path program 1 times [2021-08-26 02:23:22,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:23:22,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135865225] [2021-08-26 02:23:22,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:23:22,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:23:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:23:23,006 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-26 02:23:23,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:23:23,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135865225] [2021-08-26 02:23:23,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135865225] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:23:23,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419245314] [2021-08-26 02:23:23,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:23:23,007 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:23:23,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:23:23,007 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:23:23,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-08-26 02:23:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:23:26,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 38 conjunts are in the unsatisfiable core [2021-08-26 02:23:26,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:23:26,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:23:26,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:26,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:26,636 INFO L354 Elim1Store]: treesize reduction 190, result has 8.2 percent of original size [2021-08-26 02:23:26,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 157 treesize of output 146 [2021-08-26 02:23:26,676 INFO L354 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2021-08-26 02:23:26,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 197 treesize of output 201 [2021-08-26 02:23:26,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:26,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:23:26,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:26,690 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-26 02:23:26,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 88 [2021-08-26 02:23:27,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:27,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:23:27,041 INFO L354 Elim1Store]: treesize reduction 58, result has 20.5 percent of original size [2021-08-26 02:23:27,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 147 treesize of output 116 [2021-08-26 02:23:27,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:27,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:23:27,067 INFO L354 Elim1Store]: treesize reduction 106, result has 16.5 percent of original size [2021-08-26 02:23:27,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 134 treesize of output 130 [2021-08-26 02:23:27,081 INFO L354 Elim1Store]: treesize reduction 22, result has 40.5 percent of original size [2021-08-26 02:23:27,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 121 treesize of output 123 [2021-08-26 02:23:27,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:23:27,445 INFO L354 Elim1Store]: treesize reduction 66, result has 20.5 percent of original size [2021-08-26 02:23:27,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 151 treesize of output 116 [2021-08-26 02:23:27,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:23:27,472 INFO L354 Elim1Store]: treesize reduction 126, result has 15.4 percent of original size [2021-08-26 02:23:27,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 143 treesize of output 150 [2021-08-26 02:23:29,717 INFO L354 Elim1Store]: treesize reduction 137, result has 8.1 percent of original size [2021-08-26 02:23:29,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 157 treesize of output 96 [2021-08-26 02:23:29,738 INFO L354 Elim1Store]: treesize reduction 110, result has 2.7 percent of original size [2021-08-26 02:23:29,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 49 [2021-08-26 02:23:29,747 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-26 02:23:29,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419245314] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:23:29,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:23:29,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 21 [2021-08-26 02:23:29,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579574002] [2021-08-26 02:23:29,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-26 02:23:29,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:23:29,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-26 02:23:29,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2021-08-26 02:23:29,749 INFO L87 Difference]: Start difference. First operand 576 states and 649 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:23:35,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:23:35,199 INFO L93 Difference]: Finished difference Result 990 states and 1120 transitions. [2021-08-26 02:23:35,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-26 02:23:35,200 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 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) Word has length 57 [2021-08-26 02:23:35,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:23:35,202 INFO L225 Difference]: With dead ends: 990 [2021-08-26 02:23:35,202 INFO L226 Difference]: Without dead ends: 988 [2021-08-26 02:23:35,203 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 3228.3ms TimeCoverageRelationStatistics Valid=403, Invalid=1402, Unknown=1, NotChecked=0, Total=1806 [2021-08-26 02:23:35,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2021-08-26 02:23:35,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 756. [2021-08-26 02:23:35,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 752 states have (on average 1.139627659574468) internal successors, (857), 755 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:23:35,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 857 transitions. [2021-08-26 02:23:35,286 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 857 transitions. Word has length 57 [2021-08-26 02:23:35,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:23:35,286 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 857 transitions. [2021-08-26 02:23:35,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:23:35,287 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 857 transitions. [2021-08-26 02:23:35,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-26 02:23:35,288 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:23:35,288 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:23:35,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-08-26 02:23:35,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:23:35,499 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:23:35,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:23:35,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1270412305, now seen corresponding path program 2 times [2021-08-26 02:23:35,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:23:35,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925811827] [2021-08-26 02:23:35,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:23:35,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:23:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:23:36,212 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:23:36,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:23:36,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925811827] [2021-08-26 02:23:36,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925811827] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:23:36,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3317728] [2021-08-26 02:23:36,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 02:23:36,213 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:23:36,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:23:36,213 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:23:36,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-08-26 02:23:39,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 02:23:39,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:23:39,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 48 conjunts are in the unsatisfiable core [2021-08-26 02:23:39,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:23:39,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:23:40,033 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:23:40,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:23:40,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:23:40,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:23:40,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:40,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-08-26 02:23:40,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:40,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-08-26 02:23:40,615 INFO L354 Elim1Store]: treesize reduction 58, result has 20.5 percent of original size [2021-08-26 02:23:40,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 171 treesize of output 111 [2021-08-26 02:23:40,638 INFO L354 Elim1Store]: treesize reduction 82, result has 18.8 percent of original size [2021-08-26 02:23:40,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 135 treesize of output 108 [2021-08-26 02:23:40,665 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:23:40,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 114 [2021-08-26 02:23:41,134 INFO L354 Elim1Store]: treesize reduction 248, result has 14.8 percent of original size [2021-08-26 02:23:41,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 395 treesize of output 211 [2021-08-26 02:23:41,184 INFO L354 Elim1Store]: treesize reduction 382, result has 13.6 percent of original size [2021-08-26 02:23:41,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 267 treesize of output 246 [2021-08-26 02:23:41,205 INFO L354 Elim1Store]: treesize reduction 60, result has 50.4 percent of original size [2021-08-26 02:23:41,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 234 treesize of output 262 [2021-08-26 02:23:44,936 INFO L354 Elim1Store]: treesize reduction 371, result has 4.6 percent of original size [2021-08-26 02:23:44,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 17 new quantified variables, introduced 45 case distinctions, treesize of input 372 treesize of output 168 [2021-08-26 02:23:45,031 INFO L354 Elim1Store]: treesize reduction 327, result has 3.0 percent of original size [2021-08-26 02:23:45,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 13 new quantified variables, introduced 45 case distinctions, treesize of input 100 treesize of output 74 [2021-08-26 02:23:45,041 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:23:45,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3317728] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:23:45,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:23:45,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 23 [2021-08-26 02:23:45,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782420875] [2021-08-26 02:23:45,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-26 02:23:45,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:23:45,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-26 02:23:45,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2021-08-26 02:23:45,042 INFO L87 Difference]: Start difference. First operand 756 states and 857 transitions. Second operand has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:23:55,322 WARN L224 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-08-26 02:23:55,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-08-26 02:23:55,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-08-26 02:23:55,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-08-26 02:23:55,523 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:310) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:154) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:662) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:881) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:778) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Broken pipe at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:152) ... 35 more [2021-08-26 02:23:55,527 INFO L168 Benchmark]: Toolchain (without parser) took 511247.14 ms. Allocated memory was 50.3 MB in the beginning and 943.7 MB in the end (delta: 893.4 MB). Free memory was 32.0 MB in the beginning and 189.6 MB in the end (delta: -157.6 MB). Peak memory consumption was 736.1 MB. Max. memory is 16.1 GB. [2021-08-26 02:23:55,527 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 41.9 MB. Free memory was 23.9 MB in the beginning and 23.9 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 02:23:55,528 INFO L168 Benchmark]: CACSL2BoogieTranslator took 613.88 ms. Allocated memory is still 50.3 MB. Free memory was 31.7 MB in the beginning and 25.4 MB in the end (delta: 6.3 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2021-08-26 02:23:55,528 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.34 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 25.4 MB in the beginning and 43.6 MB in the end (delta: -18.2 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2021-08-26 02:23:55,528 INFO L168 Benchmark]: Boogie Preprocessor took 52.11 ms. Allocated memory is still 60.8 MB. Free memory was 43.6 MB in the beginning and 41.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 02:23:55,528 INFO L168 Benchmark]: RCFGBuilder took 792.47 ms. Allocated memory is still 60.8 MB. Free memory was 41.5 MB in the beginning and 34.5 MB in the end (delta: 7.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-26 02:23:55,528 INFO L168 Benchmark]: TraceAbstraction took 509697.29 ms. Allocated memory was 60.8 MB in the beginning and 943.7 MB in the end (delta: 882.9 MB). Free memory was 34.1 MB in the beginning and 189.6 MB in the end (delta: -155.5 MB). Peak memory consumption was 727.9 MB. Max. memory is 16.1 GB. [2021-08-26 02:23:55,529 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 41.9 MB. Free memory was 23.9 MB in the beginning and 23.9 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 613.88 ms. Allocated memory is still 50.3 MB. Free memory was 31.7 MB in the beginning and 25.4 MB in the end (delta: 6.3 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.34 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 25.4 MB in the beginning and 43.6 MB in the end (delta: -18.2 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.11 ms. Allocated memory is still 60.8 MB. Free memory was 43.6 MB in the beginning and 41.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 792.47 ms. Allocated memory is still 60.8 MB. Free memory was 41.5 MB in the beginning and 34.5 MB in the end (delta: 7.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 509697.29 ms. Allocated memory was 60.8 MB in the beginning and 943.7 MB in the end (delta: 882.9 MB). Free memory was 34.1 MB in the beginning and 189.6 MB in the end (delta: -155.5 MB). Peak memory consumption was 727.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:310) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 02:23:57,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 02:23:57,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 02:23:57,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 02:23:57,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 02:23:57,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 02:23:57,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 02:23:57,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 02:23:57,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 02:23:57,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 02:23:57,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 02:23:57,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 02:23:57,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 02:23:57,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 02:23:57,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 02:23:57,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 02:23:57,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 02:23:57,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 02:23:57,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 02:23:57,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 02:23:57,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 02:23:57,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 02:23:57,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 02:23:57,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 02:23:57,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 02:23:57,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 02:23:57,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 02:23:57,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 02:23:57,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 02:23:57,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 02:23:57,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 02:23:57,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 02:23:57,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 02:23:57,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 02:23:57,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 02:23:57,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 02:23:57,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 02:23:57,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 02:23:57,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 02:23:57,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 02:23:57,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 02:23:57,334 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-26 02:23:57,368 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 02:23:57,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 02:23:57,372 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 02:23:57,372 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 02:23:57,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 02:23:57,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 02:23:57,375 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 02:23:57,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 02:23:57,375 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 02:23:57,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 02:23:57,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 02:23:57,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 02:23:57,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 02:23:57,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 02:23:57,377 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 02:23:57,377 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 02:23:57,378 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 02:23:57,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 02:23:57,378 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 02:23:57,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 02:23:57,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 02:23:57,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 02:23:57,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 02:23:57,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 02:23:57,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 02:23:57,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 02:23:57,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 02:23:57,380 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 02:23:57,380 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 02:23:57,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 02:23:57,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 02:23:57,380 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 02:23:57,381 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de594eb1c59a8c10f5769fd357dcc5a485dda60b [2021-08-26 02:23:57,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 02:23:57,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 02:23:57,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 02:23:57,744 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 02:23:57,745 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 02:23:57,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-01-1.i [2021-08-26 02:23:57,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa836e6d1/a6d827913eee46f797d56b8e5dbfd768/FLAGd512f57d6 [2021-08-26 02:23:58,324 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 02:23:58,324 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i [2021-08-26 02:23:58,365 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa836e6d1/a6d827913eee46f797d56b8e5dbfd768/FLAGd512f57d6 [2021-08-26 02:23:58,667 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa836e6d1/a6d827913eee46f797d56b8e5dbfd768 [2021-08-26 02:23:58,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 02:23:58,671 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 02:23:58,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 02:23:58,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 02:23:58,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 02:23:58,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:23:58" (1/1) ... [2021-08-26 02:23:58,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53ac73a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:23:58, skipping insertion in model container [2021-08-26 02:23:58,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:23:58" (1/1) ... [2021-08-26 02:23:58,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 02:23:58,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 02:23:58,992 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22034,22047] [2021-08-26 02:23:58,997 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22307,22320] [2021-08-26 02:23:58,999 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22516,22529] [2021-08-26 02:23:59,000 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22586,22599] [2021-08-26 02:23:59,002 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22853,22866] [2021-08-26 02:23:59,004 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22961,22974] [2021-08-26 02:23:59,019 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23192,23205] [2021-08-26 02:23:59,022 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23272,23285] [2021-08-26 02:23:59,023 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23351,23364] [2021-08-26 02:23:59,024 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23441,23454] [2021-08-26 02:23:59,025 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23619,23632] [2021-08-26 02:23:59,026 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23697,23710] [2021-08-26 02:23:59,027 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23774,23787] [2021-08-26 02:23:59,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 02:23:59,049 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 02:23:59,104 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22034,22047] [2021-08-26 02:23:59,107 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22307,22320] [2021-08-26 02:23:59,108 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22516,22529] [2021-08-26 02:23:59,112 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22586,22599] [2021-08-26 02:23:59,114 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22853,22866] [2021-08-26 02:23:59,115 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[22961,22974] [2021-08-26 02:23:59,116 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23192,23205] [2021-08-26 02:23:59,117 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23272,23285] [2021-08-26 02:23:59,118 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23351,23364] [2021-08-26 02:23:59,119 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23441,23454] [2021-08-26 02:23:59,120 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23619,23632] [2021-08-26 02:23:59,121 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23697,23710] [2021-08-26 02:23:59,121 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i[23774,23787] [2021-08-26 02:23:59,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 02:23:59,145 INFO L208 MainTranslator]: Completed translation [2021-08-26 02:23:59,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:23:59 WrapperNode [2021-08-26 02:23:59,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 02:23:59,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 02:23:59,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 02:23:59,148 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 02:23:59,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:23:59" (1/1) ... [2021-08-26 02:23:59,170 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:23:59" (1/1) ... [2021-08-26 02:23:59,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 02:23:59,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 02:23:59,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 02:23:59,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 02:23:59,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:23:59" (1/1) ... [2021-08-26 02:23:59,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:23:59" (1/1) ... [2021-08-26 02:23:59,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:23:59" (1/1) ... [2021-08-26 02:23:59,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:23:59" (1/1) ... [2021-08-26 02:23:59,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:23:59" (1/1) ... [2021-08-26 02:23:59,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:23:59" (1/1) ... [2021-08-26 02:23:59,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:23:59" (1/1) ... [2021-08-26 02:23:59,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 02:23:59,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 02:23:59,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 02:23:59,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 02:23:59,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:23:59" (1/1) ... [2021-08-26 02:23:59,275 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 02:23:59,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:23:59,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 02:23:59,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 02:23:59,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-26 02:23:59,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-26 02:23:59,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 02:23:59,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-26 02:23:59,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 02:23:59,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 02:23:59,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 02:23:59,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 02:23:59,993 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 02:23:59,993 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-08-26 02:23:59,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:23:59 BoogieIcfgContainer [2021-08-26 02:23:59,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 02:23:59,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 02:23:59,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 02:24:00,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 02:24:00,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 02:23:58" (1/3) ... [2021-08-26 02:24:00,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a601b37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:24:00, skipping insertion in model container [2021-08-26 02:24:00,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:23:59" (2/3) ... [2021-08-26 02:24:00,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a601b37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:24:00, skipping insertion in model container [2021-08-26 02:24:00,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:23:59" (3/3) ... [2021-08-26 02:24:00,004 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-01-1.i [2021-08-26 02:24:00,009 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 02:24:00,010 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-08-26 02:24:00,063 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 02:24:00,069 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 02:24:00,070 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-08-26 02:24:00,085 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 66 states have (on average 2.0) internal successors, (132), 79 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:00,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-26 02:24:00,094 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:24:00,095 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-26 02:24:00,095 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:24:00,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:24:00,100 INFO L82 PathProgramCache]: Analyzing trace with hash 925700, now seen corresponding path program 1 times [2021-08-26 02:24:00,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:24:00,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796793366] [2021-08-26 02:24:00,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:24:00,114 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:24:00,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:24:00,118 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:24:00,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-26 02:24:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:24:00,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-26 02:24:00,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:24:00,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:00,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:24:00,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:00,279 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:24:00,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796793366] [2021-08-26 02:24:00,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796793366] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:24:00,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:24:00,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-26 02:24:00,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62993564] [2021-08-26 02:24:00,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:24:00,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:24:00,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:24:00,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:24:00,303 INFO L87 Difference]: Start difference. First operand has 80 states, 66 states have (on average 2.0) internal successors, (132), 79 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:00,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:24:00,411 INFO L93 Difference]: Finished difference Result 174 states and 290 transitions. [2021-08-26 02:24:00,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:24:00,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-08-26 02:24:00,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:24:00,423 INFO L225 Difference]: With dead ends: 174 [2021-08-26 02:24:00,423 INFO L226 Difference]: Without dead ends: 92 [2021-08-26 02:24:00,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:24:00,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-08-26 02:24:00,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 74. [2021-08-26 02:24:00,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 73 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:00,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2021-08-26 02:24:00,470 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 4 [2021-08-26 02:24:00,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:24:00,470 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2021-08-26 02:24:00,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:00,471 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2021-08-26 02:24:00,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 02:24:00,472 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:24:00,472 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:24:00,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-26 02:24:00,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 02:24:00,678 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:24:00,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:24:00,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1534452756, now seen corresponding path program 1 times [2021-08-26 02:24:00,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:24:00,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261295571] [2021-08-26 02:24:00,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:24:00,685 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:24:00,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:24:00,687 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:24:00,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-26 02:24:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:24:00,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-26 02:24:00,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:24:00,827 INFO L388 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 13 treesize of output 9 [2021-08-26 02:24:00,837 INFO L388 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 13 treesize of output 9 [2021-08-26 02:24:00,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:00,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:24:00,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:00,998 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:24:00,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261295571] [2021-08-26 02:24:00,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1261295571] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:24:00,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:24:00,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-26 02:24:00,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969724303] [2021-08-26 02:24:01,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:24:01,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:24:01,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:24:01,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:24:01,002 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:01,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:24:01,453 INFO L93 Difference]: Finished difference Result 195 states and 217 transitions. [2021-08-26 02:24:01,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 02:24:01,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) Word has length 9 [2021-08-26 02:24:01,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:24:01,455 INFO L225 Difference]: With dead ends: 195 [2021-08-26 02:24:01,455 INFO L226 Difference]: Without dead ends: 128 [2021-08-26 02:24:01,456 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:24:01,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-08-26 02:24:01,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 76. [2021-08-26 02:24:01,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 64 states have (on average 1.328125) internal successors, (85), 75 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:01,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2021-08-26 02:24:01,463 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 9 [2021-08-26 02:24:01,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:24:01,464 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2021-08-26 02:24:01,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:01,464 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2021-08-26 02:24:01,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 02:24:01,465 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:24:01,465 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:24:01,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-26 02:24:01,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 02:24:01,676 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:24:01,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:24:01,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1534454678, now seen corresponding path program 1 times [2021-08-26 02:24:01,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:24:01,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604594556] [2021-08-26 02:24:01,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:24:01,677 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:24:01,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:24:01,679 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:24:01,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-26 02:24:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:24:01,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-26 02:24:01,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:24:01,775 INFO L388 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 13 treesize of output 9 [2021-08-26 02:24:01,792 INFO L388 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 13 treesize of output 9 [2021-08-26 02:24:01,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:01,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:24:01,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:01,894 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:24:01,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604594556] [2021-08-26 02:24:01,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604594556] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:24:01,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:24:01,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-26 02:24:01,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191227994] [2021-08-26 02:24:01,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:24:01,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:24:01,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:24:01,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:24:01,897 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:02,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:24:02,329 INFO L93 Difference]: Finished difference Result 129 states and 144 transitions. [2021-08-26 02:24:02,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 02:24:02,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) Word has length 9 [2021-08-26 02:24:02,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:24:02,331 INFO L225 Difference]: With dead ends: 129 [2021-08-26 02:24:02,331 INFO L226 Difference]: Without dead ends: 127 [2021-08-26 02:24:02,332 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:24:02,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-08-26 02:24:02,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 77. [2021-08-26 02:24:02,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 65 states have (on average 1.323076923076923) internal successors, (86), 76 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:02,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2021-08-26 02:24:02,338 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 9 [2021-08-26 02:24:02,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:24:02,338 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2021-08-26 02:24:02,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:02,338 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2021-08-26 02:24:02,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 02:24:02,339 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:24:02,339 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:24:02,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-26 02:24:02,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 02:24:02,540 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:24:02,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:24:02,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1536301720, now seen corresponding path program 1 times [2021-08-26 02:24:02,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:24:02,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118025181] [2021-08-26 02:24:02,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:24:02,541 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:24:02,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:24:02,542 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:24:02,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-26 02:24:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:24:02,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-26 02:24:02,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:24:02,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:02,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:24:02,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:02,855 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:24:02,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118025181] [2021-08-26 02:24:02,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1118025181] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:24:02,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:24:02,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-08-26 02:24:02,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305988642] [2021-08-26 02:24:02,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 02:24:02,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:24:02,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 02:24:02,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:24:02,858 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:03,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:24:03,249 INFO L93 Difference]: Finished difference Result 78 states and 87 transitions. [2021-08-26 02:24:03,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 02:24:03,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-26 02:24:03,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:24:03,251 INFO L225 Difference]: With dead ends: 78 [2021-08-26 02:24:03,251 INFO L226 Difference]: Without dead ends: 76 [2021-08-26 02:24:03,251 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 93.0ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-26 02:24:03,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-08-26 02:24:03,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2021-08-26 02:24:03,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 63 states have (on average 1.3174603174603174) internal successors, (83), 73 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:03,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2021-08-26 02:24:03,258 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 9 [2021-08-26 02:24:03,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:24:03,258 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2021-08-26 02:24:03,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:03,258 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2021-08-26 02:24:03,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-26 02:24:03,259 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:24:03,259 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:24:03,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-26 02:24:03,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 02:24:03,469 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:24:03,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:24:03,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1743237117, now seen corresponding path program 1 times [2021-08-26 02:24:03,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:24:03,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11604295] [2021-08-26 02:24:03,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:24:03,470 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:24:03,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:24:03,473 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:24:03,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-26 02:24:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:24:03,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-26 02:24:03,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:24:03,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:03,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:24:03,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:03,657 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:24:03,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11604295] [2021-08-26 02:24:03,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11604295] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:24:03,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:24:03,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-26 02:24:03,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222395653] [2021-08-26 02:24:03,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:24:03,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:24:03,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:24:03,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:24:03,659 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:03,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:24:03,742 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2021-08-26 02:24:03,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:24:03,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) Word has length 13 [2021-08-26 02:24:03,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:24:03,743 INFO L225 Difference]: With dead ends: 76 [2021-08-26 02:24:03,743 INFO L226 Difference]: Without dead ends: 72 [2021-08-26 02:24:03,744 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:24:03,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-08-26 02:24:03,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2021-08-26 02:24:03,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 61 states have (on average 1.2950819672131149) internal successors, (79), 69 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:03,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2021-08-26 02:24:03,748 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 13 [2021-08-26 02:24:03,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:24:03,748 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2021-08-26 02:24:03,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:03,748 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2021-08-26 02:24:03,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-26 02:24:03,748 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:24:03,749 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:24:03,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-26 02:24:03,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 02:24:03,949 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:24:03,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:24:03,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1794227426, now seen corresponding path program 1 times [2021-08-26 02:24:03,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:24:03,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850719379] [2021-08-26 02:24:03,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:24:03,950 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:24:03,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:24:03,952 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:24:03,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-26 02:24:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:24:04,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-26 02:24:04,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:24:04,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:04,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:24:04,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:04,181 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:24:04,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850719379] [2021-08-26 02:24:04,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850719379] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:24:04,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:24:04,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-26 02:24:04,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947076964] [2021-08-26 02:24:04,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:24:04,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:24:04,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:24:04,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:24:04,182 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:04,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:24:04,352 INFO L93 Difference]: Finished difference Result 129 states and 143 transitions. [2021-08-26 02:24:04,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 02:24:04,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) Word has length 14 [2021-08-26 02:24:04,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:24:04,354 INFO L225 Difference]: With dead ends: 129 [2021-08-26 02:24:04,354 INFO L226 Difference]: Without dead ends: 109 [2021-08-26 02:24:04,354 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:24:04,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-08-26 02:24:04,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 69. [2021-08-26 02:24:04,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 61 states have (on average 1.278688524590164) internal successors, (78), 68 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:04,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2021-08-26 02:24:04,363 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 14 [2021-08-26 02:24:04,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:24:04,363 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2021-08-26 02:24:04,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:04,363 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2021-08-26 02:24:04,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-26 02:24:04,364 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:24:04,364 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:24:04,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-08-26 02:24:04,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 02:24:04,574 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:24:04,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:24:04,574 INFO L82 PathProgramCache]: Analyzing trace with hash -140282483, now seen corresponding path program 1 times [2021-08-26 02:24:04,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:24:04,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630876229] [2021-08-26 02:24:04,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:24:04,575 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:24:04,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:24:04,576 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:24:04,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-26 02:24:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:24:04,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-26 02:24:04,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:24:04,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:04,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:24:04,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:04,823 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:24:04,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630876229] [2021-08-26 02:24:04,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630876229] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:24:04,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:24:04,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-08-26 02:24:04,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267233904] [2021-08-26 02:24:04,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:24:04,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:24:04,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:24:04,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:24:04,833 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:04,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:24:04,863 INFO L93 Difference]: Finished difference Result 152 states and 173 transitions. [2021-08-26 02:24:04,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 02:24:04,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-08-26 02:24:04,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:24:04,865 INFO L225 Difference]: With dead ends: 152 [2021-08-26 02:24:04,865 INFO L226 Difference]: Without dead ends: 111 [2021-08-26 02:24:04,865 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:24:04,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-08-26 02:24:04,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 82. [2021-08-26 02:24:04,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 74 states have (on average 1.2972972972972974) internal successors, (96), 81 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:04,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 96 transitions. [2021-08-26 02:24:04,869 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 96 transitions. Word has length 18 [2021-08-26 02:24:04,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:24:04,870 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 96 transitions. [2021-08-26 02:24:04,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:04,870 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 96 transitions. [2021-08-26 02:24:04,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-26 02:24:04,871 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:24:04,871 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:24:04,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-26 02:24:05,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 02:24:05,081 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:24:05,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:24:05,082 INFO L82 PathProgramCache]: Analyzing trace with hash -53794182, now seen corresponding path program 1 times [2021-08-26 02:24:05,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:24:05,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766378081] [2021-08-26 02:24:05,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:24:05,082 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:24:05,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:24:05,083 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:24:05,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-26 02:24:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:24:05,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 02:24:05,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:24:05,213 INFO L388 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 13 treesize of output 9 [2021-08-26 02:24:05,219 INFO L388 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 13 treesize of output 9 [2021-08-26 02:24:05,377 INFO L388 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 37 treesize of output 25 [2021-08-26 02:24:05,380 INFO L388 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 22 treesize of output 10 [2021-08-26 02:24:05,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:05,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:24:05,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:05,569 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:24:05,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766378081] [2021-08-26 02:24:05,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766378081] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:24:05,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:24:05,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-26 02:24:05,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396286576] [2021-08-26 02:24:05,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 02:24:05,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:24:05,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 02:24:05,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:24:05,572 INFO L87 Difference]: Start difference. First operand 82 states and 96 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:05,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:24:05,988 INFO L93 Difference]: Finished difference Result 210 states and 246 transitions. [2021-08-26 02:24:05,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 02:24:05,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-08-26 02:24:05,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:24:05,991 INFO L225 Difference]: With dead ends: 210 [2021-08-26 02:24:05,991 INFO L226 Difference]: Without dead ends: 156 [2021-08-26 02:24:05,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 74.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-26 02:24:05,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-08-26 02:24:05,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 91. [2021-08-26 02:24:05,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 83 states have (on average 1.2771084337349397) internal successors, (106), 90 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:05,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2021-08-26 02:24:05,997 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 19 [2021-08-26 02:24:05,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:24:05,997 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2021-08-26 02:24:05,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:05,997 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2021-08-26 02:24:05,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-26 02:24:05,998 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:24:05,998 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:24:06,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-08-26 02:24:06,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 02:24:06,205 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:24:06,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:24:06,205 INFO L82 PathProgramCache]: Analyzing trace with hash -746851846, now seen corresponding path program 1 times [2021-08-26 02:24:06,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:24:06,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413424831] [2021-08-26 02:24:06,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:24:06,206 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:24:06,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:24:06,207 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:24:06,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-26 02:24:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:24:06,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-26 02:24:06,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:24:06,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:06,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:24:06,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:06,462 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:24:06,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413424831] [2021-08-26 02:24:06,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413424831] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:24:06,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:24:06,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-26 02:24:06,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089950633] [2021-08-26 02:24:06,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:24:06,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:24:06,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:24:06,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:24:06,463 INFO L87 Difference]: Start difference. First operand 91 states and 106 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:06,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:24:06,483 INFO L93 Difference]: Finished difference Result 91 states and 106 transitions. [2021-08-26 02:24:06,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:24:06,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-08-26 02:24:06,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:24:06,484 INFO L225 Difference]: With dead ends: 91 [2021-08-26 02:24:06,484 INFO L226 Difference]: Without dead ends: 89 [2021-08-26 02:24:06,485 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:24:06,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-08-26 02:24:06,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-08-26 02:24:06,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 82 states have (on average 1.2560975609756098) internal successors, (103), 88 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:06,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 103 transitions. [2021-08-26 02:24:06,489 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 103 transitions. Word has length 19 [2021-08-26 02:24:06,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:24:06,490 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 103 transitions. [2021-08-26 02:24:06,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:06,490 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 103 transitions. [2021-08-26 02:24:06,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-26 02:24:06,491 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:24:06,491 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:24:06,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-08-26 02:24:06,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 02:24:06,697 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:24:06,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:24:06,698 INFO L82 PathProgramCache]: Analyzing trace with hash -169331172, now seen corresponding path program 1 times [2021-08-26 02:24:06,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:24:06,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731893759] [2021-08-26 02:24:06,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:24:06,698 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:24:06,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:24:06,699 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:24:06,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-08-26 02:24:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:24:06,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-26 02:24:06,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:24:06,896 INFO L388 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 13 treesize of output 9 [2021-08-26 02:24:06,908 INFO L388 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 13 treesize of output 9 [2021-08-26 02:24:06,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:06,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:24:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:07,019 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:24:07,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731893759] [2021-08-26 02:24:07,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731893759] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:24:07,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:24:07,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-26 02:24:07,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243285189] [2021-08-26 02:24:07,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:24:07,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:24:07,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:24:07,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:24:07,037 INFO L87 Difference]: Start difference. First operand 89 states and 103 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:07,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:24:07,308 INFO L93 Difference]: Finished difference Result 165 states and 192 transitions. [2021-08-26 02:24:07,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 02:24:07,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) Word has length 20 [2021-08-26 02:24:07,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:24:07,309 INFO L225 Difference]: With dead ends: 165 [2021-08-26 02:24:07,309 INFO L226 Difference]: Without dead ends: 97 [2021-08-26 02:24:07,310 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:24:07,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-08-26 02:24:07,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 91. [2021-08-26 02:24:07,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 84 states have (on average 1.25) internal successors, (105), 90 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:07,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2021-08-26 02:24:07,314 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 20 [2021-08-26 02:24:07,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:24:07,314 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2021-08-26 02:24:07,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:07,315 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2021-08-26 02:24:07,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-26 02:24:07,315 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:24:07,315 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:24:07,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-08-26 02:24:07,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 02:24:07,526 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:24:07,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:24:07,526 INFO L82 PathProgramCache]: Analyzing trace with hash -169329250, now seen corresponding path program 1 times [2021-08-26 02:24:07,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:24:07,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493864123] [2021-08-26 02:24:07,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:24:07,527 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:24:07,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:24:07,528 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:24:07,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-08-26 02:24:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:24:07,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-26 02:24:07,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:24:07,733 INFO L388 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 13 treesize of output 9 [2021-08-26 02:24:07,740 INFO L388 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 13 treesize of output 9 [2021-08-26 02:24:07,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:07,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:24:07,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:07,858 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:24:07,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493864123] [2021-08-26 02:24:07,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [493864123] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:24:07,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:24:07,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-26 02:24:07,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067648960] [2021-08-26 02:24:07,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:24:07,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:24:07,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:24:07,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:24:07,861 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:08,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:24:08,053 INFO L93 Difference]: Finished difference Result 98 states and 114 transitions. [2021-08-26 02:24:08,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 02:24:08,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) Word has length 20 [2021-08-26 02:24:08,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:24:08,056 INFO L225 Difference]: With dead ends: 98 [2021-08-26 02:24:08,056 INFO L226 Difference]: Without dead ends: 96 [2021-08-26 02:24:08,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:24:08,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-08-26 02:24:08,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2021-08-26 02:24:08,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 85 states have (on average 1.2470588235294118) internal successors, (106), 91 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:08,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 106 transitions. [2021-08-26 02:24:08,061 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 106 transitions. Word has length 20 [2021-08-26 02:24:08,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:24:08,062 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 106 transitions. [2021-08-26 02:24:08,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:08,062 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 106 transitions. [2021-08-26 02:24:08,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-26 02:24:08,063 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:24:08,063 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:24:08,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-08-26 02:24:08,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 02:24:08,273 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:24:08,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:24:08,274 INFO L82 PathProgramCache]: Analyzing trace with hash -167482208, now seen corresponding path program 1 times [2021-08-26 02:24:08,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:24:08,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205505509] [2021-08-26 02:24:08,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:24:08,274 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:24:08,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:24:08,275 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:24:08,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-08-26 02:24:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:24:08,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-26 02:24:08,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:24:08,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:08,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:24:08,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:08,677 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:24:08,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205505509] [2021-08-26 02:24:08,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205505509] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:24:08,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:24:08,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-08-26 02:24:08,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373838847] [2021-08-26 02:24:08,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 02:24:08,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:24:08,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 02:24:08,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:24:08,679 INFO L87 Difference]: Start difference. First operand 92 states and 106 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:08,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:24:08,891 INFO L93 Difference]: Finished difference Result 93 states and 107 transitions. [2021-08-26 02:24:08,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 02:24:08,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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) Word has length 20 [2021-08-26 02:24:08,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:24:08,892 INFO L225 Difference]: With dead ends: 93 [2021-08-26 02:24:08,892 INFO L226 Difference]: Without dead ends: 91 [2021-08-26 02:24:08,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 83.8ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-26 02:24:08,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-08-26 02:24:08,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2021-08-26 02:24:08,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 83 states have (on average 1.2409638554216869) internal successors, (103), 88 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:08,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 103 transitions. [2021-08-26 02:24:08,895 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 103 transitions. Word has length 20 [2021-08-26 02:24:08,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:24:08,896 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 103 transitions. [2021-08-26 02:24:08,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:08,896 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 103 transitions. [2021-08-26 02:24:08,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-26 02:24:08,896 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:24:08,896 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:24:08,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-08-26 02:24:09,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 02:24:09,105 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:24:09,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:24:09,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1528659518, now seen corresponding path program 1 times [2021-08-26 02:24:09,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:24:09,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408372098] [2021-08-26 02:24:09,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:24:09,106 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:24:09,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:24:09,107 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:24:09,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-08-26 02:24:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:24:09,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-26 02:24:09,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:24:09,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:24:09,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:24:09,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:24:09,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:24:09,440 INFO L354 Elim1Store]: treesize reduction 87, result has 9.4 percent of original size [2021-08-26 02:24:09,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 288 treesize of output 210 [2021-08-26 02:24:09,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:24:09,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:24:09,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:24:09,464 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-08-26 02:24:09,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 64 [2021-08-26 02:24:09,476 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-08-26 02:24:09,476 INFO L388 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 85 treesize of output 85 [2021-08-26 02:24:10,197 INFO L354 Elim1Store]: treesize reduction 52, result has 5.5 percent of original size [2021-08-26 02:24:10,197 INFO L388 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 54 [2021-08-26 02:24:10,219 INFO L354 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2021-08-26 02:24:10,220 INFO L388 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 28 [2021-08-26 02:24:10,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:10,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:24:10,556 INFO L388 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 1082 treesize of output 940 [2021-08-26 02:24:10,570 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:24:10,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1015 treesize of output 983 [2021-08-26 02:24:10,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:10,807 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:24:10,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408372098] [2021-08-26 02:24:10,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408372098] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:24:10,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:24:10,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-08-26 02:24:10,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035938028] [2021-08-26 02:24:10,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-26 02:24:10,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:24:10,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-26 02:24:10,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-08-26 02:24:10,809 INFO L87 Difference]: Start difference. First operand 89 states and 103 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:12,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:24:12,667 INFO L93 Difference]: Finished difference Result 257 states and 291 transitions. [2021-08-26 02:24:12,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 02:24:12,673 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 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) Word has length 22 [2021-08-26 02:24:12,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:24:12,675 INFO L225 Difference]: With dead ends: 257 [2021-08-26 02:24:12,675 INFO L226 Difference]: Without dead ends: 255 [2021-08-26 02:24:12,676 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 647.1ms TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2021-08-26 02:24:12,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-08-26 02:24:12,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 100. [2021-08-26 02:24:12,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 94 states have (on average 1.2340425531914894) internal successors, (116), 99 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:12,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 116 transitions. [2021-08-26 02:24:12,682 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 116 transitions. Word has length 22 [2021-08-26 02:24:12,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:24:12,683 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 116 transitions. [2021-08-26 02:24:12,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:12,683 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 116 transitions. [2021-08-26 02:24:12,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-26 02:24:12,685 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:24:12,685 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:24:12,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-08-26 02:24:12,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 02:24:12,892 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:24:12,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:24:12,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1978772808, now seen corresponding path program 1 times [2021-08-26 02:24:12,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:24:12,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880038051] [2021-08-26 02:24:12,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:24:12,893 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:24:12,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:24:12,894 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:24:12,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-08-26 02:24:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:24:13,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-26 02:24:13,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:24:13,162 INFO L388 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 13 treesize of output 9 [2021-08-26 02:24:13,169 INFO L388 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 13 treesize of output 9 [2021-08-26 02:24:13,354 INFO L388 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 37 treesize of output 25 [2021-08-26 02:24:13,356 INFO L388 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 22 treesize of output 10 [2021-08-26 02:24:13,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-26 02:24:13,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:24:13,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-26 02:24:13,579 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:24:13,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880038051] [2021-08-26 02:24:13,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880038051] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:24:13,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:24:13,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-26 02:24:13,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814696260] [2021-08-26 02:24:13,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:24:13,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:24:13,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:24:13,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:24:13,580 INFO L87 Difference]: Start difference. First operand 100 states and 116 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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) [2021-08-26 02:24:13,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:24:13,988 INFO L93 Difference]: Finished difference Result 156 states and 181 transitions. [2021-08-26 02:24:13,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 02:24:13,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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) Word has length 24 [2021-08-26 02:24:13,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:24:13,990 INFO L225 Difference]: With dead ends: 156 [2021-08-26 02:24:13,990 INFO L226 Difference]: Without dead ends: 138 [2021-08-26 02:24:13,990 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:24:13,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-08-26 02:24:13,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 130. [2021-08-26 02:24:13,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 124 states have (on average 1.2580645161290323) internal successors, (156), 129 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:13,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 156 transitions. [2021-08-26 02:24:13,997 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 156 transitions. Word has length 24 [2021-08-26 02:24:13,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:24:13,997 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 156 transitions. [2021-08-26 02:24:13,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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) [2021-08-26 02:24:13,998 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 156 transitions. [2021-08-26 02:24:13,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-26 02:24:13,998 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:24:13,999 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:24:14,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-08-26 02:24:14,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 02:24:14,215 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:24:14,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:24:14,216 INFO L82 PathProgramCache]: Analyzing trace with hash -802276552, now seen corresponding path program 1 times [2021-08-26 02:24:14,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:24:14,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416336474] [2021-08-26 02:24:14,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:24:14,217 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:24:14,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:24:14,218 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:24:14,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-08-26 02:24:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:24:14,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-26 02:24:14,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:24:14,729 INFO L388 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 40 treesize of output 28 [2021-08-26 02:24:14,732 INFO L388 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 25 treesize of output 13 [2021-08-26 02:24:14,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:14,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:24:14,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:14,958 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:24:14,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416336474] [2021-08-26 02:24:14,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416336474] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:24:14,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:24:14,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-08-26 02:24:14,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128844692] [2021-08-26 02:24:14,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 02:24:14,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:24:14,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 02:24:14,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-26 02:24:14,961 INFO L87 Difference]: Start difference. First operand 130 states and 156 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:16,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:24:16,018 INFO L93 Difference]: Finished difference Result 279 states and 328 transitions. [2021-08-26 02:24:16,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 02:24:16,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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) Word has length 24 [2021-08-26 02:24:16,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:24:16,020 INFO L225 Difference]: With dead ends: 279 [2021-08-26 02:24:16,021 INFO L226 Difference]: Without dead ends: 227 [2021-08-26 02:24:16,021 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 237.7ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-08-26 02:24:16,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-08-26 02:24:16,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 139. [2021-08-26 02:24:16,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 133 states have (on average 1.2481203007518797) internal successors, (166), 138 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:16,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 166 transitions. [2021-08-26 02:24:16,032 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 166 transitions. Word has length 24 [2021-08-26 02:24:16,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:24:16,033 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 166 transitions. [2021-08-26 02:24:16,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:16,033 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 166 transitions. [2021-08-26 02:24:16,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-26 02:24:16,034 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:24:16,035 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:24:16,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-08-26 02:24:16,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 02:24:16,246 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:24:16,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:24:16,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1498546038, now seen corresponding path program 1 times [2021-08-26 02:24:16,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:24:16,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567313591] [2021-08-26 02:24:16,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:24:16,247 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:24:16,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:24:16,247 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:24:16,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-08-26 02:24:16,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:24:16,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 02:24:16,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:24:16,772 INFO L388 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 37 treesize of output 25 [2021-08-26 02:24:16,776 INFO L388 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 22 treesize of output 10 [2021-08-26 02:24:16,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-26 02:24:16,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:24:17,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-26 02:24:17,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:24:17,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567313591] [2021-08-26 02:24:17,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567313591] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:24:17,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:24:17,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-08-26 02:24:17,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947332494] [2021-08-26 02:24:17,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 02:24:17,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:24:17,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 02:24:17,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-26 02:24:17,040 INFO L87 Difference]: Start difference. First operand 139 states and 166 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:17,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:24:17,804 INFO L93 Difference]: Finished difference Result 200 states and 236 transitions. [2021-08-26 02:24:17,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 02:24:17,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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) Word has length 24 [2021-08-26 02:24:17,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:24:17,806 INFO L225 Difference]: With dead ends: 200 [2021-08-26 02:24:17,806 INFO L226 Difference]: Without dead ends: 182 [2021-08-26 02:24:17,806 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 118.9ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-26 02:24:17,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-08-26 02:24:17,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 144. [2021-08-26 02:24:17,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 138 states have (on average 1.2391304347826086) internal successors, (171), 143 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:17,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 171 transitions. [2021-08-26 02:24:17,813 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 171 transitions. Word has length 24 [2021-08-26 02:24:17,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:24:17,813 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 171 transitions. [2021-08-26 02:24:17,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:17,814 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 171 transitions. [2021-08-26 02:24:17,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-26 02:24:17,814 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:24:17,814 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:24:17,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-08-26 02:24:18,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 02:24:18,025 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:24:18,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:24:18,026 INFO L82 PathProgramCache]: Analyzing trace with hash -753351988, now seen corresponding path program 1 times [2021-08-26 02:24:18,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:24:18,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249630173] [2021-08-26 02:24:18,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:24:18,026 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:24:18,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:24:18,027 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:24:18,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-08-26 02:24:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:24:18,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-26 02:24:18,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:24:18,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:24:18,465 INFO L354 Elim1Store]: treesize reduction 171, result has 5.0 percent of original size [2021-08-26 02:24:18,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 289 treesize of output 211 [2021-08-26 02:24:18,513 INFO L354 Elim1Store]: treesize reduction 128, result has 17.4 percent of original size [2021-08-26 02:24:18,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 194 treesize of output 153 [2021-08-26 02:24:18,543 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-08-26 02:24:18,543 INFO L388 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 210 treesize of output 210 [2021-08-26 02:24:18,596 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 02:24:18,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 38 [2021-08-26 02:24:19,532 INFO L354 Elim1Store]: treesize reduction 74, result has 3.9 percent of original size [2021-08-26 02:24:19,533 INFO L388 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 110 treesize of output 56 [2021-08-26 02:24:19,552 INFO L354 Elim1Store]: treesize reduction 56, result has 5.1 percent of original size [2021-08-26 02:24:19,553 INFO L388 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 26 [2021-08-26 02:24:19,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:19,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:24:20,147 INFO L354 Elim1Store]: treesize reduction 762, result has 1.2 percent of original size [2021-08-26 02:24:20,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 13014 treesize of output 11834 [2021-08-26 02:24:20,337 INFO L354 Elim1Store]: treesize reduction 109, result has 29.2 percent of original size [2021-08-26 02:24:20,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 1070 treesize of output 1008 [2021-08-26 02:24:20,374 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-08-26 02:24:20,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 955 treesize of output 941 [2021-08-26 02:24:20,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 928 treesize of output 914 [2021-08-26 02:24:20,439 INFO L354 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2021-08-26 02:24:20,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 930 treesize of output 921 [2021-08-26 02:24:20,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 917 treesize of output 905 [2021-08-26 02:24:20,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 892 treesize of output 888 [2021-08-26 02:24:20,504 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-08-26 02:24:20,506 INFO L388 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 867 treesize of output 861 [2021-08-26 02:24:20,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:20,687 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:24:20,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249630173] [2021-08-26 02:24:20,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249630173] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:24:20,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:24:20,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-08-26 02:24:20,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684271561] [2021-08-26 02:24:20,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-26 02:24:20,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:24:20,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-26 02:24:20,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-08-26 02:24:20,689 INFO L87 Difference]: Start difference. First operand 144 states and 171 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:22,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:24:22,195 INFO L93 Difference]: Finished difference Result 338 states and 400 transitions. [2021-08-26 02:24:22,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 02:24:22,196 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 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) Word has length 25 [2021-08-26 02:24:22,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:24:22,198 INFO L225 Difference]: With dead ends: 338 [2021-08-26 02:24:22,198 INFO L226 Difference]: Without dead ends: 336 [2021-08-26 02:24:22,198 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 511.8ms TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-08-26 02:24:22,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-08-26 02:24:22,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 150. [2021-08-26 02:24:22,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 144 states have (on average 1.2291666666666667) internal successors, (177), 149 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:22,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2021-08-26 02:24:22,208 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 25 [2021-08-26 02:24:22,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:24:22,208 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2021-08-26 02:24:22,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:22,208 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2021-08-26 02:24:22,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-26 02:24:22,209 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:24:22,209 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:24:22,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-08-26 02:24:22,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 02:24:22,422 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:24:22,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:24:22,422 INFO L82 PathProgramCache]: Analyzing trace with hash 486182162, now seen corresponding path program 1 times [2021-08-26 02:24:22,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:24:22,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810216954] [2021-08-26 02:24:22,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:24:22,423 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:24:22,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:24:22,425 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:24:22,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-08-26 02:24:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:24:22,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-26 02:24:22,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:24:23,144 INFO L388 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 29 treesize of output 21 [2021-08-26 02:24:23,149 INFO L388 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 18 treesize of output 10 [2021-08-26 02:24:23,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:23,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:24:23,311 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-08-26 02:24:23,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 31 [2021-08-26 02:24:23,319 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-08-26 02:24:23,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 27 treesize of output 19 [2021-08-26 02:24:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:23,405 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:24:23,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810216954] [2021-08-26 02:24:23,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1810216954] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-26 02:24:23,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:24:23,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-08-26 02:24:23,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781032971] [2021-08-26 02:24:23,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 02:24:23,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:24:23,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 02:24:23,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-26 02:24:23,407 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 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) [2021-08-26 02:24:24,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:24:24,314 INFO L93 Difference]: Finished difference Result 351 states and 417 transitions. [2021-08-26 02:24:24,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 02:24:24,315 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 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) Word has length 27 [2021-08-26 02:24:24,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:24:24,316 INFO L225 Difference]: With dead ends: 351 [2021-08-26 02:24:24,316 INFO L226 Difference]: Without dead ends: 254 [2021-08-26 02:24:24,316 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 122.1ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-08-26 02:24:24,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-08-26 02:24:24,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 200. [2021-08-26 02:24:24,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 194 states have (on average 1.2422680412371134) internal successors, (241), 199 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:24,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 241 transitions. [2021-08-26 02:24:24,328 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 241 transitions. Word has length 27 [2021-08-26 02:24:24,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:24:24,328 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 241 transitions. [2021-08-26 02:24:24,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 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) [2021-08-26 02:24:24,328 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 241 transitions. [2021-08-26 02:24:24,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-26 02:24:24,329 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:24:24,329 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:24:24,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-08-26 02:24:24,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 02:24:24,540 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:24:24,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:24:24,540 INFO L82 PathProgramCache]: Analyzing trace with hash -721495, now seen corresponding path program 1 times [2021-08-26 02:24:24,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:24:24,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402553774] [2021-08-26 02:24:24,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:24:24,541 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:24:24,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:24:24,542 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:24:24,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-08-26 02:24:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:24:24,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-26 02:24:24,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:24:25,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:24:25,042 INFO L388 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 13 treesize of output 9 [2021-08-26 02:24:25,051 INFO L388 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 13 treesize of output 9 [2021-08-26 02:24:25,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:24:25,229 INFO L354 Elim1Store]: treesize reduction 46, result has 35.2 percent of original size [2021-08-26 02:24:25,229 INFO L388 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 2 case distinctions, treesize of input 37 treesize of output 35 [2021-08-26 02:24:25,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:24:25,284 INFO L354 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2021-08-26 02:24:25,284 INFO L388 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 2 case distinctions, treesize of input 37 treesize of output 27 [2021-08-26 02:24:25,304 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-26 02:24:25,304 INFO L388 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 17 treesize of output 17 [2021-08-26 02:24:25,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:24:25,531 INFO L354 Elim1Store]: treesize reduction 108, result has 18.2 percent of original size [2021-08-26 02:24:25,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 82 [2021-08-26 02:24:25,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:24:25,565 INFO L354 Elim1Store]: treesize reduction 136, result has 17.1 percent of original size [2021-08-26 02:24:25,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 90 treesize of output 91 [2021-08-26 02:24:26,043 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-08-26 02:24:26,044 INFO L388 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 57 [2021-08-26 02:24:26,052 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-08-26 02:24:26,053 INFO L388 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 45 treesize of output 23 [2021-08-26 02:24:26,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:26,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:24:28,478 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~end~0.base_64 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~end~0.base_64)))))) (and (forall ((v_ULTIMATE.start_main_~end~0.offset_65 (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset (_ bv0 32))))) (store .cse0 v_ULTIMATE.start_main_~end~0.base_64 (store (store (select .cse0 v_ULTIMATE.start_main_~end~0.base_64) v_ULTIMATE.start_main_~end~0.offset_65 (_ bv0 32)) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_65) (_ bv0 32)))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)) (_ bv0 32))) (forall ((v_ULTIMATE.start_main_~end~0.offset_65 (_ BitVec 32))) (= (select (select (let ((.cse1 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset v_ULTIMATE.start_main_~end~0.base_64)))) (store .cse1 v_ULTIMATE.start_main_~end~0.base_64 (store (store (select .cse1 v_ULTIMATE.start_main_~end~0.base_64) v_ULTIMATE.start_main_~end~0.offset_65 (_ bv0 32)) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_65) (_ bv0 32)))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)) (_ bv0 32)))))) is different from false [2021-08-26 02:24:30,578 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~end~0.base_64 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~end~0.base_64)))))) (and (forall ((v_ULTIMATE.start_main_~end~0.offset_65 (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~list~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset (_ bv0 32))))) (store .cse0 v_ULTIMATE.start_main_~end~0.base_64 (store (store (select .cse0 v_ULTIMATE.start_main_~end~0.base_64) v_ULTIMATE.start_main_~end~0.offset_65 (_ bv0 32)) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_65) (_ bv0 32)))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)) (_ bv0 32))) (forall ((v_ULTIMATE.start_main_~end~0.offset_65 (_ BitVec 32))) (= (select (select (let ((.cse1 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~list~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_ULTIMATE.start_main_~end~0.base_64)))) (store .cse1 v_ULTIMATE.start_main_~end~0.base_64 (store (store (select .cse1 v_ULTIMATE.start_main_~end~0.base_64) v_ULTIMATE.start_main_~end~0.offset_65 (_ bv0 32)) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_65) (_ bv0 32)))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)) (_ bv0 32)))))) is different from false [2021-08-26 02:24:30,869 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:24:30,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402553774] [2021-08-26 02:24:30,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-26 02:24:30,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [495809249] [2021-08-26 02:24:30,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:24:30,870 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-26 02:24:30,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-26 02:24:30,871 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-26 02:24:30,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-08-26 02:24:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:24:31,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-26 02:24:31,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:24:31,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:24:31,625 INFO L388 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 13 treesize of output 9 [2021-08-26 02:24:31,633 INFO L388 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 13 treesize of output 9 [2021-08-26 02:24:31,758 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-26 02:24:31,758 INFO L388 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 18 treesize of output 18 [2021-08-26 02:24:31,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:24:31,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-08-26 02:24:31,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:24:31,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-08-26 02:24:32,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:24:32,056 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-08-26 02:24:32,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 94 treesize of output 78 [2021-08-26 02:24:32,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:24:32,080 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-08-26 02:24:32,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 86 treesize of output 87 [2021-08-26 02:24:32,641 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:24:32,641 INFO L388 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 88 treesize of output 60 [2021-08-26 02:24:32,650 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-08-26 02:24:32,650 INFO L388 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 23 [2021-08-26 02:24:32,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:32,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:24:35,022 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~end~0.base_68 (_ BitVec 32))) (or (let ((.cse1 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (and (= (_ bv0 32) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset v_ULTIMATE.start_main_~end~0.base_68)))) (store .cse0 v_ULTIMATE.start_main_~end~0.base_68 (store (store (select .cse0 v_ULTIMATE.start_main_~end~0.base_68) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32)))) c_ULTIMATE.start_main_~list~0.base) .cse1)) (= (select (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset (_ bv0 32))))) (store .cse2 v_ULTIMATE.start_main_~end~0.base_68 (store (store (select .cse2 v_ULTIMATE.start_main_~end~0.base_68) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32)))) c_ULTIMATE.start_main_~list~0.base) .cse1) (_ bv0 32)))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~end~0.base_68))))))) is different from false [2021-08-26 02:24:37,137 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~end~0.base_68 (_ BitVec 32))) (or (let ((.cse1 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (and (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~list~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_ULTIMATE.start_main_~end~0.base_68)))) (store .cse0 v_ULTIMATE.start_main_~end~0.base_68 (store (store (select .cse0 v_ULTIMATE.start_main_~end~0.base_68) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32)))) c_ULTIMATE.start_main_~list~0.base) .cse1) (_ bv0 32)) (= (select (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~list~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset (_ bv0 32))))) (store .cse2 v_ULTIMATE.start_main_~end~0.base_68 (store (store (select .cse2 v_ULTIMATE.start_main_~end~0.base_68) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32)))) c_ULTIMATE.start_main_~list~0.base) .cse1) (_ bv0 32)))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~end~0.base_68))))))) is different from false [2021-08-26 02:24:37,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-08-26 02:24:37,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [495809249] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-26 02:24:37,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:24:37,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-08-26 02:24:37,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151673572] [2021-08-26 02:24:37,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-26 02:24:37,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:24:37,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-26 02:24:37,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=165, Unknown=4, NotChecked=116, Total=342 [2021-08-26 02:24:37,639 INFO L87 Difference]: Start difference. First operand 200 states and 241 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:39,744 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (and (forall ((v_ULTIMATE.start_main_~end~0.base_68 (_ BitVec 32))) (or (let ((.cse1 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (and (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~list~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_ULTIMATE.start_main_~end~0.base_68)))) (store .cse0 v_ULTIMATE.start_main_~end~0.base_68 (store (store (select .cse0 v_ULTIMATE.start_main_~end~0.base_68) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32)))) c_ULTIMATE.start_main_~list~0.base) .cse1) (_ bv0 32)) (= (select (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~list~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset (_ bv0 32))))) (store .cse2 v_ULTIMATE.start_main_~end~0.base_68 (store (store (select .cse2 v_ULTIMATE.start_main_~end~0.base_68) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32)))) c_ULTIMATE.start_main_~list~0.base) .cse1) (_ bv0 32)))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~end~0.base_68))))))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (= (select (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~list~0.base) .cse3) (_ bv0 32)) (= (_ bv0 32) (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~list~0.base) .cse3)) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~list~0.base))) (_ bv1 1))))) is different from false [2021-08-26 02:24:42,072 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (and (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (= (select (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~list~0.base) .cse0) (_ bv0 32)) (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~end~0.base) (= (_ bv0 32) (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~list~0.base) .cse0)) (forall ((v_ULTIMATE.start_main_~end~0.base_68 (_ BitVec 32))) (or (let ((.cse2 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (and (= (_ bv0 32) (select (select (let ((.cse1 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset v_ULTIMATE.start_main_~end~0.base_68)))) (store .cse1 v_ULTIMATE.start_main_~end~0.base_68 (store (store (select .cse1 v_ULTIMATE.start_main_~end~0.base_68) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32)))) c_ULTIMATE.start_main_~list~0.base) .cse2)) (= (select (select (let ((.cse3 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset (_ bv0 32))))) (store .cse3 v_ULTIMATE.start_main_~end~0.base_68 (store (store (select .cse3 v_ULTIMATE.start_main_~end~0.base_68) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32)))) c_ULTIMATE.start_main_~list~0.base) .cse2) (_ bv0 32)))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~end~0.base_68))))))) (= c_ULTIMATE.start_main_~end~0.offset c_ULTIMATE.start_main_~list~0.offset) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~list~0.base))) (_ bv1 1))))) is different from false [2021-08-26 02:24:45,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:24:45,110 INFO L93 Difference]: Finished difference Result 591 states and 703 transitions. [2021-08-26 02:24:45,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-08-26 02:24:45,113 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 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) Word has length 32 [2021-08-26 02:24:45,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:24:45,115 INFO L225 Difference]: With dead ends: 591 [2021-08-26 02:24:45,116 INFO L226 Difference]: Without dead ends: 503 [2021-08-26 02:24:45,117 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 13332.6ms TimeCoverageRelationStatistics Valid=168, Invalid=606, Unknown=6, NotChecked=342, Total=1122 [2021-08-26 02:24:45,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2021-08-26 02:24:45,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 237. [2021-08-26 02:24:45,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 231 states have (on average 1.2294372294372293) internal successors, (284), 236 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:45,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 284 transitions. [2021-08-26 02:24:45,134 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 284 transitions. Word has length 32 [2021-08-26 02:24:45,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:24:45,134 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 284 transitions. [2021-08-26 02:24:45,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:45,135 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 284 transitions. [2021-08-26 02:24:45,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-26 02:24:45,136 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:24:45,136 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:24:45,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-08-26 02:24:45,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-08-26 02:24:45,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-08-26 02:24:45,548 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-26 02:24:45,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:24:45,548 INFO L82 PathProgramCache]: Analyzing trace with hash -572234199, now seen corresponding path program 1 times [2021-08-26 02:24:45,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:24:45,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904383548] [2021-08-26 02:24:45,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:24:45,549 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:24:45,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:24:45,550 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 02:24:45,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-08-26 02:24:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:24:46,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-26 02:24:46,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:24:46,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:24:46,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:24:46,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:24:46,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:24:46,330 INFO L354 Elim1Store]: treesize reduction 87, result has 9.4 percent of original size [2021-08-26 02:24:46,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 294 treesize of output 216 [2021-08-26 02:24:46,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:24:46,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:24:46,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:24:46,347 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-08-26 02:24:46,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 70 [2021-08-26 02:24:46,368 INFO L354 Elim1Store]: treesize reduction 27, result has 41.3 percent of original size [2021-08-26 02:24:46,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 97 treesize of output 104 [2021-08-26 02:24:46,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:24:46,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:24:46,846 INFO L354 Elim1Store]: treesize reduction 106, result has 16.5 percent of original size [2021-08-26 02:24:46,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 166 treesize of output 162 [2021-08-26 02:24:46,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:24:46,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:24:46,888 INFO L354 Elim1Store]: treesize reduction 58, result has 20.5 percent of original size [2021-08-26 02:24:46,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 153 treesize of output 122 [2021-08-26 02:24:46,912 INFO L354 Elim1Store]: treesize reduction 22, result has 40.5 percent of original size [2021-08-26 02:24:46,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 140 treesize of output 142 [2021-08-26 02:24:47,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:24:47,442 INFO L354 Elim1Store]: treesize reduction 66, result has 20.5 percent of original size [2021-08-26 02:24:47,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 151 treesize of output 116 [2021-08-26 02:24:47,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:24:47,477 INFO L354 Elim1Store]: treesize reduction 126, result has 15.4 percent of original size [2021-08-26 02:24:47,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 143 treesize of output 150 [2021-08-26 02:24:48,691 INFO L354 Elim1Store]: treesize reduction 137, result has 8.1 percent of original size [2021-08-26 02:24:48,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 157 treesize of output 96 [2021-08-26 02:24:48,739 INFO L354 Elim1Store]: treesize reduction 110, result has 2.7 percent of original size [2021-08-26 02:24:48,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 49 [2021-08-26 02:24:48,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:48,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:24:53,567 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~end~0.base_72 (_ BitVec 32))) (let ((.cse2 (let ((.cse7 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset (_ bv0 32))))) (store .cse7 v_ULTIMATE.start_main_~end~0.base_72 (store (store (select .cse7 v_ULTIMATE.start_main_~end~0.base_72) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32))))) (.cse4 (let ((.cse6 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset v_ULTIMATE.start_main_~end~0.base_72)))) (store .cse6 v_ULTIMATE.start_main_~end~0.base_72 (store (store (select .cse6 v_ULTIMATE.start_main_~end~0.base_72) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32))))) (.cse5 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (let ((.cse0 (select (select .cse4 c_ULTIMATE.start_main_~list~0.base) .cse5)) (.cse1 (select (select .cse2 c_ULTIMATE.start_main_~list~0.base) .cse5))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~end~0.base_72)))) (and (= (_ bv0 32) .cse0) (= .cse1 (_ bv0 32))) (let ((.cse3 (bvadd (_ bv4 32) .cse1))) (and (= (select (select .cse2 .cse0) .cse3) (_ bv0 32)) (= (select (select .cse4 .cse0) .cse3) (_ bv0 32)))))))) is different from false [2021-08-26 02:24:56,135 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~end~0.base_72 (_ BitVec 32))) (let ((.cse0 (let ((.cse7 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~list~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_ULTIMATE.start_main_~end~0.base_72)))) (store .cse7 v_ULTIMATE.start_main_~end~0.base_72 (store (store (select .cse7 v_ULTIMATE.start_main_~end~0.base_72) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32))))) (.cse3 (let ((.cse6 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~list~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset (_ bv0 32))))) (store .cse6 v_ULTIMATE.start_main_~end~0.base_72 (store (store (select .cse6 v_ULTIMATE.start_main_~end~0.base_72) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32))))) (.cse5 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (let ((.cse4 (select (select .cse3 c_ULTIMATE.start_main_~list~0.base) .cse5)) (.cse1 (select (select .cse0 c_ULTIMATE.start_main_~list~0.base) .cse5))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~end~0.base_72)))) (let ((.cse2 (bvadd (_ bv4 32) .cse4))) (and (= (select (select .cse0 .cse1) .cse2) (_ bv0 32)) (= (_ bv0 32) (select (select .cse3 .cse1) .cse2)))) (and (= .cse4 (_ bv0 32)) (= .cse1 (_ bv0 32))))))) is different from false [2021-08-26 02:24:58,609 INFO L388 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 6888 treesize of output 6323 [2021-08-26 02:24:58,647 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:24:58,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 175987 treesize of output 172403 [2021-08-26 02:25:06,134 WARN L207 SmtUtils]: Spent 7.48 s on a formula simplification. DAG size of input: 543 DAG size of output: 424 [2021-08-26 02:25:06,138 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:25:06,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904383548] [2021-08-26 02:25:06,138 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-08-26 02:25:06,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1729223056] [2021-08-26 02:25:06,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:25:06,139 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-26 02:25:06,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-26 02:25:06,140 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-26 02:25:06,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-08-26 02:25:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:25:07,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-26 02:25:07,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:25:07,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:25:07,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:25:07,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:25:07,260 INFO L354 Elim1Store]: treesize reduction 190, result has 8.2 percent of original size [2021-08-26 02:25:07,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 162 treesize of output 151 [2021-08-26 02:25:07,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:25:07,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:25:07,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:25:07,297 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-26 02:25:07,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 95 [2021-08-26 02:25:07,344 INFO L354 Elim1Store]: treesize reduction 27, result has 41.3 percent of original size [2021-08-26 02:25:07,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 102 [2021-08-26 02:25:07,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:25:07,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:25:07,866 INFO L354 Elim1Store]: treesize reduction 58, result has 20.5 percent of original size [2021-08-26 02:25:07,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 167 treesize of output 136 [2021-08-26 02:25:07,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:25:07,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:25:07,921 INFO L354 Elim1Store]: treesize reduction 106, result has 16.5 percent of original size [2021-08-26 02:25:07,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 154 treesize of output 150 [2021-08-26 02:25:07,955 INFO L354 Elim1Store]: treesize reduction 22, result has 40.5 percent of original size [2021-08-26 02:25:07,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 141 treesize of output 143 [2021-08-26 02:25:08,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:25:08,582 INFO L354 Elim1Store]: treesize reduction 66, result has 20.5 percent of original size [2021-08-26 02:25:08,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 151 treesize of output 116 [2021-08-26 02:25:08,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:25:08,638 INFO L354 Elim1Store]: treesize reduction 126, result has 15.4 percent of original size [2021-08-26 02:25:08,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 143 treesize of output 150 [2021-08-26 02:25:09,922 INFO L354 Elim1Store]: treesize reduction 137, result has 8.1 percent of original size [2021-08-26 02:25:09,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 157 treesize of output 96 [2021-08-26 02:25:09,958 INFO L354 Elim1Store]: treesize reduction 110, result has 2.7 percent of original size [2021-08-26 02:25:09,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 49 [2021-08-26 02:25:09,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:25:09,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:25:13,002 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~end~0.base_76 (_ BitVec 32))) (let ((.cse3 (let ((.cse7 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset (_ bv0 32))))) (store .cse7 v_ULTIMATE.start_main_~end~0.base_76 (store (store (select .cse7 v_ULTIMATE.start_main_~end~0.base_76) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32))))) (.cse0 (let ((.cse6 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset v_ULTIMATE.start_main_~end~0.base_76)))) (store .cse6 v_ULTIMATE.start_main_~end~0.base_76 (store (store (select .cse6 v_ULTIMATE.start_main_~end~0.base_76) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32))))) (.cse5 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~list~0.base) .cse5)) (.cse4 (select (select .cse3 c_ULTIMATE.start_main_~list~0.base) .cse5))) (or (let ((.cse2 (bvadd (_ bv4 32) .cse4))) (and (= (select (select .cse0 .cse1) .cse2) (_ bv0 32)) (= (select (select .cse3 .cse1) .cse2) (_ bv0 32)))) (and (= (_ bv0 32) .cse1) (= .cse4 (_ bv0 32))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~end~0.base_76))))))))) is different from false [2021-08-26 02:25:15,678 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~end~0.base_76 (_ BitVec 32))) (let ((.cse0 (let ((.cse7 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~list~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset (_ bv0 32))))) (store .cse7 v_ULTIMATE.start_main_~end~0.base_76 (store (store (select .cse7 v_ULTIMATE.start_main_~end~0.base_76) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32))))) (.cse3 (let ((.cse6 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~list~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_ULTIMATE.start_main_~end~0.base_76)))) (store .cse6 v_ULTIMATE.start_main_~end~0.base_76 (store (store (select .cse6 v_ULTIMATE.start_main_~end~0.base_76) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32))))) (.cse5 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (let ((.cse1 (select (select .cse3 c_ULTIMATE.start_main_~list~0.base) .cse5)) (.cse4 (select (select .cse0 c_ULTIMATE.start_main_~list~0.base) .cse5))) (or (let ((.cse2 (bvadd (_ bv4 32) .cse4))) (and (= (_ bv0 32) (select (select .cse0 .cse1) .cse2)) (= (select (select .cse3 .cse1) .cse2) (_ bv0 32)))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~end~0.base_76))))) (and (= .cse1 (_ bv0 32)) (= .cse4 (_ bv0 32))))))) is different from false [2021-08-26 02:25:17,932 INFO L388 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 6888 treesize of output 6323 [2021-08-26 02:25:17,961 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:25:17,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 50858 treesize of output 49978 [2021-08-26 02:25:19,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-08-26 02:25:19,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874187692] [2021-08-26 02:25:19,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:25:19,807 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:25:19,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:25:19,808 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:25:19,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-08-26 02:25:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:25:20,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-26 02:25:20,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:25:20,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:25:20,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:25:20,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:25:20,976 INFO L354 Elim1Store]: treesize reduction 190, result has 8.2 percent of original size [2021-08-26 02:25:20,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 164 treesize of output 153 [2021-08-26 02:25:20,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:25:20,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:25:20,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:25:21,013 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-26 02:25:21,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 97 [2021-08-26 02:25:21,055 INFO L354 Elim1Store]: treesize reduction 27, result has 41.3 percent of original size [2021-08-26 02:25:21,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 97 treesize of output 104 [2021-08-26 02:25:21,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:25:21,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:25:21,643 INFO L354 Elim1Store]: treesize reduction 106, result has 16.5 percent of original size [2021-08-26 02:25:21,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 173 treesize of output 169 [2021-08-26 02:25:21,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:25:21,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:25:21,711 INFO L354 Elim1Store]: treesize reduction 58, result has 20.5 percent of original size [2021-08-26 02:25:21,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 160 treesize of output 129 [2021-08-26 02:25:21,743 INFO L354 Elim1Store]: treesize reduction 22, result has 40.5 percent of original size [2021-08-26 02:25:21,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 147 treesize of output 149 [2021-08-26 02:25:22,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:25:22,364 INFO L354 Elim1Store]: treesize reduction 66, result has 20.5 percent of original size [2021-08-26 02:25:22,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 151 treesize of output 116 [2021-08-26 02:25:22,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:25:22,408 INFO L354 Elim1Store]: treesize reduction 126, result has 15.4 percent of original size [2021-08-26 02:25:22,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 143 treesize of output 150 [2021-08-26 02:25:23,834 INFO L354 Elim1Store]: treesize reduction 137, result has 8.1 percent of original size [2021-08-26 02:25:23,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 157 treesize of output 96 [2021-08-26 02:25:23,880 INFO L354 Elim1Store]: treesize reduction 110, result has 2.7 percent of original size [2021-08-26 02:25:23,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 49 [2021-08-26 02:25:23,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:25:23,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:25:26,896 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~end~0.base_80 (_ BitVec 32))) (let ((.cse2 (let ((.cse7 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset (_ bv0 32))))) (store .cse7 v_ULTIMATE.start_main_~end~0.base_80 (store (store (select .cse7 v_ULTIMATE.start_main_~end~0.base_80) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32))))) (.cse4 (let ((.cse6 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset v_ULTIMATE.start_main_~end~0.base_80)))) (store .cse6 v_ULTIMATE.start_main_~end~0.base_80 (store (store (select .cse6 v_ULTIMATE.start_main_~end~0.base_80) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32))))) (.cse5 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (let ((.cse1 (select (select .cse4 c_ULTIMATE.start_main_~list~0.base) .cse5)) (.cse0 (select (select .cse2 c_ULTIMATE.start_main_~list~0.base) .cse5))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~end~0.base_80))))) (and (= .cse0 (_ bv0 32)) (= .cse1 (_ bv0 32))) (let ((.cse3 (bvadd (_ bv4 32) .cse0))) (and (= (select (select .cse2 .cse1) .cse3) (_ bv0 32)) (= (select (select .cse4 .cse1) .cse3) (_ bv0 32)))))))) is different from false [2021-08-26 02:25:29,440 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~end~0.base_80 (_ BitVec 32))) (let ((.cse4 (let ((.cse7 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~list~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset (_ bv0 32))))) (store .cse7 v_ULTIMATE.start_main_~end~0.base_80 (store (store (select .cse7 v_ULTIMATE.start_main_~end~0.base_80) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32))))) (.cse2 (let ((.cse6 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~list~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_ULTIMATE.start_main_~end~0.base_80)))) (store .cse6 v_ULTIMATE.start_main_~end~0.base_80 (store (store (select .cse6 v_ULTIMATE.start_main_~end~0.base_80) (_ bv0 32) (_ bv0 32)) (_ bv4 32) (_ bv0 32))))) (.cse5 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (let ((.cse1 (select (select .cse2 c_ULTIMATE.start_main_~list~0.base) .cse5)) (.cse0 (select (select .cse4 c_ULTIMATE.start_main_~list~0.base) .cse5))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~end~0.base_80))))) (and (= .cse0 (_ bv0 32)) (= .cse1 (_ bv0 32))) (let ((.cse3 (bvadd (_ bv4 32) .cse0))) (and (= (select (select .cse2 .cse1) .cse3) (_ bv0 32)) (= (select (select .cse4 .cse1) .cse3) (_ bv0 32)))))))) is different from false [2021-08-26 02:25:32,938 INFO L354 Elim1Store]: treesize reduction 6768, result has 0.2 percent of original size [2021-08-26 02:25:32,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 2685934 treesize of output 2303994 [2021-08-26 02:26:42,500 WARN L207 SmtUtils]: Spent 1.16 m on a formula simplification. DAG size of input: 1356 DAG size of output: 1333 [2021-08-26 02:26:47,463 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:26:47,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 54084 treesize of output 53956 [2021-08-26 02:26:49,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-08-26 02:26:49,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:26:49,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-26 02:26:49,130 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-26 02:26:49,130 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-26 02:26:49,133 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:26:49,134 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:26:49,134 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:26:49,134 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:26:49,134 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:26:49,135 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:26:49,135 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:26:49,135 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:26:49,135 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:26:49,135 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:26:49,135 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:26:49,135 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:26:49,135 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:26:49,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-08-26 02:26:49,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-08-26 02:26:49,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-08-26 02:26:49,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:26:49,740 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 02:26:49,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 02:26:49 BoogieIcfgContainer [2021-08-26 02:26:49,753 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 02:26:49,754 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 02:26:49,754 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 02:26:49,754 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 02:26:49,755 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:23:59" (3/4) ... [2021-08-26 02:26:49,757 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 02:26:49,758 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 02:26:49,758 INFO L168 Benchmark]: Toolchain (without parser) took 171087.49 ms. Allocated memory was 56.6 MB in the beginning and 775.9 MB in the end (delta: 719.3 MB). Free memory was 34.9 MB in the beginning and 501.3 MB in the end (delta: -466.4 MB). Peak memory consumption was 253.3 MB. Max. memory is 16.1 GB. [2021-08-26 02:26:49,759 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 56.6 MB. Free memory was 38.5 MB in the beginning and 38.5 MB in the end (delta: 44.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 02:26:49,759 INFO L168 Benchmark]: CACSL2BoogieTranslator took 474.62 ms. Allocated memory is still 56.6 MB. Free memory was 34.7 MB in the beginning and 31.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 02:26:49,759 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.30 ms. Allocated memory is still 56.6 MB. Free memory was 31.3 MB in the beginning and 29.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 02:26:49,760 INFO L168 Benchmark]: Boogie Preprocessor took 54.72 ms. Allocated memory is still 56.6 MB. Free memory was 29.0 MB in the beginning and 26.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 02:26:49,760 INFO L168 Benchmark]: RCFGBuilder took 729.94 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 26.7 MB in the beginning and 38.6 MB in the end (delta: -12.0 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2021-08-26 02:26:49,760 INFO L168 Benchmark]: TraceAbstraction took 169756.01 ms. Allocated memory was 69.2 MB in the beginning and 775.9 MB in the end (delta: 706.7 MB). Free memory was 37.9 MB in the beginning and 502.5 MB in the end (delta: -464.6 MB). Peak memory consumption was 479.7 MB. Max. memory is 16.1 GB. [2021-08-26 02:26:49,761 INFO L168 Benchmark]: Witness Printer took 3.89 ms. Allocated memory is still 775.9 MB. Free memory was 502.5 MB in the beginning and 501.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 02:26:49,766 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 56.6 MB. Free memory was 38.5 MB in the beginning and 38.5 MB in the end (delta: 44.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 474.62 ms. Allocated memory is still 56.6 MB. Free memory was 34.7 MB in the beginning and 31.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.30 ms. Allocated memory is still 56.6 MB. Free memory was 31.3 MB in the beginning and 29.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.72 ms. Allocated memory is still 56.6 MB. Free memory was 29.0 MB in the beginning and 26.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 729.94 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 26.7 MB in the beginning and 38.6 MB in the end (delta: -12.0 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 169756.01 ms. Allocated memory was 69.2 MB in the beginning and 775.9 MB in the end (delta: 706.7 MB). Free memory was 37.9 MB in the beginning and 502.5 MB in the end (delta: -464.6 MB). Peak memory consumption was 479.7 MB. Max. memory is 16.1 GB. * Witness Printer took 3.89 ms. Allocated memory is still 775.9 MB. Free memory was 502.5 MB in the beginning and 501.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1036]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L1002] SLL* list = malloc(sizeof(SLL)); [L1003] list->next = ((void*)0) [L1004] COND FALSE !(!(list != ((void*)0))) [L1004] COND FALSE !(__VERIFIER_nondet_int()) [L1004] list->inner = malloc(sizeof(SLL)) [L1004] EXPR list->inner [L1004] list->inner->next = ((void*)0) [L1004] EXPR list->inner [L1004] list->inner->inner = ((void*)0) [L1004] EXPR list->inner [L1004] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L1004] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L1006] SLL* end = list; [L1009] COND TRUE __VERIFIER_nondet_int() [L1012] end->next = malloc(sizeof(SLL)) [L1013] EXPR end->next [L1013] end = end->next [L1014] end->next = ((void*)0) [L1015] COND FALSE !(!(((void*)0) != end)) [L1016] COND FALSE !(!(end != ((void*)0))) [L1016] COND TRUE __VERIFIER_nondet_int() [L1016] end->inner = ((void*)0) [L1016] EXPR end->inner [L1016] EXPR end->inner != ((void*)0) || end->inner == ((void*)0) [L1016] EXPR end->inner [L1016] EXPR end->inner != ((void*)0) || end->inner == ((void*)0) [L1016] COND FALSE !(!(end->inner != ((void*)0) || end->inner == ((void*)0))) [L1009] COND FALSE !(__VERIFIER_nondet_int()) [L1019] end = ((void*)0) [L1020] end = list [L1023] COND FALSE !(!(((void*)0) != end)) [L1025] COND TRUE ((void*)0) != end [L1027] int len = 0; [L1028] EXPR end->inner [L1028] SLL* inner = end->inner; [L1029] COND TRUE ((void*)0) != inner [L1031] COND TRUE len == 0 [L1032] len = 1 [L1035] COND FALSE !(!(((void*)0) != inner)) [L1036] EXPR inner->inner [L1036] COND TRUE !(((void*)0) == inner->inner) [L1036] reach_error() - UnprovableResult [Line: 1004]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1035]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1037]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1040]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1053]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1054]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 80 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 169677.8ms, OverallIterations: 20, TraceHistogramMax: 2, EmptinessCheckTime: 25.2ms, AutomataDifference: 16854.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1456 SDtfs, 2089 SDslu, 3489 SDs, 0 SdLazy, 1849 SolverSat, 207 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9274.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 774 GetRequests, 651 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 15387.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=237occurred in iteration=19, InterpolantAutomatonStates: 132, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 153.4ms AutomataMinimizationTime, 19 MinimizatonAttempts, 1065 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 228.7ms SsaConstructionTime, 454.3ms SatisfiabilityAnalysisTime, 13906.9ms InterpolantComputationTime, 352 NumberOfCodeBlocks, 352 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 666 ConstructedInterpolants, 19 QuantifiedInterpolants, 9043 SizeOfPredicates, 106 NumberOfNonLiveVariables, 1187 ConjunctsInSsa, 132 ConjunctsInUnsatCore, 38 InterpolantComputations, 34 PerfectInterpolantSequences, 8/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-26 02:26:49,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...