./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/dll-queue-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/dll-queue-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 9d0fe8819c9f9684711883fabc222e5491a603f3 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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/dll-queue-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 9d0fe8819c9f9684711883fabc222e5491a603f3 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:12:17,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 02:12:17,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 02:12:17,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 02:12:17,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 02:12:17,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 02:12:17,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 02:12:17,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 02:12:17,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 02:12:17,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 02:12:17,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 02:12:17,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 02:12:17,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 02:12:17,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 02:12:17,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 02:12:17,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 02:12:17,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 02:12:17,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 02:12:17,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 02:12:17,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 02:12:17,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 02:12:17,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 02:12:17,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 02:12:17,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 02:12:17,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 02:12:17,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 02:12:17,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 02:12:17,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 02:12:17,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 02:12:17,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 02:12:17,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 02:12:17,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 02:12:17,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 02:12:17,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 02:12:17,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 02:12:17,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 02:12:17,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 02:12:17,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 02:12:17,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 02:12:17,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 02:12:17,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 02:12:17,766 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 02:12:17,798 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 02:12:17,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 02:12:17,800 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 02:12:17,800 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 02:12:17,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 02:12:17,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 02:12:17,802 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 02:12:17,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 02:12:17,802 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 02:12:17,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 02:12:17,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 02:12:17,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 02:12:17,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 02:12:17,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 02:12:17,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 02:12:17,804 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 02:12:17,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 02:12:17,804 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 02:12:17,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 02:12:17,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 02:12:17,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 02:12:17,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 02:12:17,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 02:12:17,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 02:12:17,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 02:12:17,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 02:12:17,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 02:12:17,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 02:12:17,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 02:12:17,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 02:12:17,813 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d0fe8819c9f9684711883fabc222e5491a603f3 [2021-08-26 02:12:18,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 02:12:18,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 02:12:18,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 02:12:18,106 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 02:12:18,107 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 02:12:18,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-queue-1.i [2021-08-26 02:12:18,162 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37ec558c5/5979819c35e44feb8d970b9b6a47e2b2/FLAG0ea462451 [2021-08-26 02:12:18,544 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 02:12:18,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-1.i [2021-08-26 02:12:18,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37ec558c5/5979819c35e44feb8d970b9b6a47e2b2/FLAG0ea462451 [2021-08-26 02:12:18,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37ec558c5/5979819c35e44feb8d970b9b6a47e2b2 [2021-08-26 02:12:18,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 02:12:18,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 02:12:18,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 02:12:18,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 02:12:18,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 02:12:18,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:12:18" (1/1) ... [2021-08-26 02:12:18,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df4a28b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:12:18, skipping insertion in model container [2021-08-26 02:12:18,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:12:18" (1/1) ... [2021-08-26 02:12:18,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 02:12:18,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 02:12:19,180 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/dll-queue-1.i[22460,22473] [2021-08-26 02:12:19,183 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/dll-queue-1.i[22531,22544] [2021-08-26 02:12:19,183 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/dll-queue-1.i[22605,22618] [2021-08-26 02:12:19,184 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/dll-queue-1.i[22697,22710] [2021-08-26 02:12:19,185 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/dll-queue-1.i[22774,22787] [2021-08-26 02:12:19,185 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/dll-queue-1.i[22869,22882] [2021-08-26 02:12:19,186 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/dll-queue-1.i[22946,22959] [2021-08-26 02:12:19,186 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/dll-queue-1.i[23029,23042] [2021-08-26 02:12:19,187 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/dll-queue-1.i[23124,23137] [2021-08-26 02:12:19,188 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/dll-queue-1.i[23201,23214] [2021-08-26 02:12:19,189 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/dll-queue-1.i[23284,23297] [2021-08-26 02:12:19,191 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/dll-queue-1.i[23373,23386] [2021-08-26 02:12:19,192 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/dll-queue-1.i[23459,23472] [2021-08-26 02:12:19,194 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/dll-queue-1.i[23604,23617] [2021-08-26 02:12:19,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 02:12:19,207 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 02:12:19,246 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/dll-queue-1.i[22460,22473] [2021-08-26 02:12:19,247 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/dll-queue-1.i[22531,22544] [2021-08-26 02:12:19,247 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/dll-queue-1.i[22605,22618] [2021-08-26 02:12:19,248 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/dll-queue-1.i[22697,22710] [2021-08-26 02:12:19,248 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/dll-queue-1.i[22774,22787] [2021-08-26 02:12:19,249 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/dll-queue-1.i[22869,22882] [2021-08-26 02:12:19,252 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/dll-queue-1.i[22946,22959] [2021-08-26 02:12:19,253 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/dll-queue-1.i[23029,23042] [2021-08-26 02:12:19,253 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/dll-queue-1.i[23124,23137] [2021-08-26 02:12:19,254 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/dll-queue-1.i[23201,23214] [2021-08-26 02:12:19,254 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/dll-queue-1.i[23284,23297] [2021-08-26 02:12:19,255 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/dll-queue-1.i[23373,23386] [2021-08-26 02:12:19,255 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/dll-queue-1.i[23459,23472] [2021-08-26 02:12:19,256 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/dll-queue-1.i[23604,23617] [2021-08-26 02:12:19,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 02:12:19,278 INFO L208 MainTranslator]: Completed translation [2021-08-26 02:12:19,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:12:19 WrapperNode [2021-08-26 02:12:19,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 02:12:19,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 02:12:19,279 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 02:12:19,279 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 02:12:19,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:12:19" (1/1) ... [2021-08-26 02:12:19,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:12:19" (1/1) ... [2021-08-26 02:12:19,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 02:12:19,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 02:12:19,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 02:12:19,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 02:12:19,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:12:19" (1/1) ... [2021-08-26 02:12:19,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:12:19" (1/1) ... [2021-08-26 02:12:19,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:12:19" (1/1) ... [2021-08-26 02:12:19,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:12:19" (1/1) ... [2021-08-26 02:12:19,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:12:19" (1/1) ... [2021-08-26 02:12:19,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:12:19" (1/1) ... [2021-08-26 02:12:19,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:12:19" (1/1) ... [2021-08-26 02:12:19,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 02:12:19,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 02:12:19,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 02:12:19,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 02:12:19,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:12:19" (1/1) ... [2021-08-26 02:12:19,403 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 02:12:19,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:12:19,424 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 02:12:19,428 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 02:12:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-26 02:12:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-26 02:12:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-26 02:12:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-26 02:12:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 02:12:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-26 02:12:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 02:12:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 02:12:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 02:12:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 02:12:19,935 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 02:12:19,936 INFO L299 CfgBuilder]: Removed 35 assume(true) statements. [2021-08-26 02:12:19,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:12:19 BoogieIcfgContainer [2021-08-26 02:12:19,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 02:12:19,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 02:12:19,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 02:12:19,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 02:12:19,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 02:12:18" (1/3) ... [2021-08-26 02:12:19,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1634bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:12:19, skipping insertion in model container [2021-08-26 02:12:19,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:12:19" (2/3) ... [2021-08-26 02:12:19,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1634bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:12:19, skipping insertion in model container [2021-08-26 02:12:19,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:12:19" (3/3) ... [2021-08-26 02:12:19,943 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-queue-1.i [2021-08-26 02:12:19,947 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 02:12:19,947 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-08-26 02:12:19,987 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 02:12:19,991 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 02:12:19,991 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-08-26 02:12:20,008 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 70 states have (on average 2.0) internal successors, (140), 84 states have internal predecessors, (140), 0 states have call successors, (0), 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 02:12:20,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-26 02:12:20,011 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:12:20,012 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-26 02:12:20,012 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:12:20,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:12:20,016 INFO L82 PathProgramCache]: Analyzing trace with hash 28752478, now seen corresponding path program 1 times [2021-08-26 02:12:20,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:12:20,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285728598] [2021-08-26 02:12:20,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:12:20,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:12:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:12:20,136 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 02:12:20,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:12:20,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285728598] [2021-08-26 02:12:20,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285728598] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:12:20,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:12:20,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 02:12:20,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874158377] [2021-08-26 02:12:20,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 02:12:20,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:12:20,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 02:12:20,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 02:12:20,162 INFO L87 Difference]: Start difference. First operand has 85 states, 70 states have (on average 2.0) internal successors, (140), 84 states have internal predecessors, (140), 0 states have call successors, (0), 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 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 02:12:20,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:12:20,187 INFO L93 Difference]: Finished difference Result 168 states and 278 transitions. [2021-08-26 02:12:20,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 02:12:20,189 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-08-26 02:12:20,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:12:20,197 INFO L225 Difference]: With dead ends: 168 [2021-08-26 02:12:20,197 INFO L226 Difference]: Without dead ends: 80 [2021-08-26 02:12:20,199 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 02:12:20,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-08-26 02:12:20,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-08-26 02:12:20,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 66 states have (on average 1.3484848484848484) internal successors, (89), 79 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 02:12:20,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2021-08-26 02:12:20,222 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 5 [2021-08-26 02:12:20,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:12:20,222 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2021-08-26 02:12:20,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 02:12:20,223 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2021-08-26 02:12:20,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-26 02:12:20,223 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:12:20,223 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-26 02:12:20,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 02:12:20,224 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:12:20,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:12:20,227 INFO L82 PathProgramCache]: Analyzing trace with hash 889571111, now seen corresponding path program 1 times [2021-08-26 02:12:20,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:12:20,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094887762] [2021-08-26 02:12:20,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:12:20,228 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:12:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:12:20,304 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 02:12:20,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:12:20,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094887762] [2021-08-26 02:12:20,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094887762] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:12:20,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:12:20,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:12:20,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256944463] [2021-08-26 02:12:20,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:12:20,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:12:20,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:12:20,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:12:20,309 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 02:12:20,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:12:20,355 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2021-08-26 02:12:20,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:12:20,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-08-26 02:12:20,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:12:20,359 INFO L225 Difference]: With dead ends: 80 [2021-08-26 02:12:20,359 INFO L226 Difference]: Without dead ends: 70 [2021-08-26 02:12:20,359 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:12:20,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-08-26 02:12:20,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-08-26 02:12:20,374 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 02:12:20,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2021-08-26 02:12:20,375 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 6 [2021-08-26 02:12:20,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:12:20,376 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2021-08-26 02:12:20,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 02:12:20,376 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2021-08-26 02:12:20,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 02:12:20,376 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:12:20,376 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:12:20,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 02:12:20,377 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:12:20,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:12:20,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1270244236, now seen corresponding path program 1 times [2021-08-26 02:12:20,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:12:20,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176309086] [2021-08-26 02:12:20,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:12:20,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:12:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:12:20,472 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 02:12:20,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:12:20,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176309086] [2021-08-26 02:12:20,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176309086] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:12:20,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:12:20,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 02:12:20,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795253122] [2021-08-26 02:12:20,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:12:20,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:12:20,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:12:20,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:12:20,478 INFO L87 Difference]: Start difference. First operand 70 states and 79 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 02:12:20,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:12:20,573 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2021-08-26 02:12:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 02:12:20,574 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 02:12:20,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:12:20,575 INFO L225 Difference]: With dead ends: 119 [2021-08-26 02:12:20,575 INFO L226 Difference]: Without dead ends: 117 [2021-08-26 02:12:20,576 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:12:20,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-26 02:12:20,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 68. [2021-08-26 02:12:20,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 67 states have internal predecessors, (77), 0 states have call successors, (0), 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 02:12:20,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2021-08-26 02:12:20,582 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 9 [2021-08-26 02:12:20,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:12:20,583 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2021-08-26 02:12:20,583 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 02:12:20,583 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2021-08-26 02:12:20,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-26 02:12:20,584 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:12:20,584 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:12:20,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 02:12:20,584 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:12:20,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:12:20,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1286414876, now seen corresponding path program 1 times [2021-08-26 02:12:20,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:12:20,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058620973] [2021-08-26 02:12:20,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:12:20,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:12:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:12:20,619 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 02:12:20,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:12:20,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058620973] [2021-08-26 02:12:20,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058620973] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:12:20,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:12:20,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:12:20,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564996849] [2021-08-26 02:12:20,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:12:20,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:12:20,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:12:20,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:12:20,623 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:12:20,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:12:20,661 INFO L93 Difference]: Finished difference Result 153 states and 178 transitions. [2021-08-26 02:12:20,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:12:20,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-26 02:12:20,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:12:20,663 INFO L225 Difference]: With dead ends: 153 [2021-08-26 02:12:20,663 INFO L226 Difference]: Without dead ends: 87 [2021-08-26 02:12:20,664 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:12:20,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-08-26 02:12:20,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2021-08-26 02:12:20,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 75 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 02:12:20,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2021-08-26 02:12:20,679 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 12 [2021-08-26 02:12:20,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:12:20,679 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2021-08-26 02:12:20,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:12:20,679 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2021-08-26 02:12:20,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 02:12:20,680 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:12:20,680 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:12:20,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-26 02:12:20,681 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:12:20,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:12:20,682 INFO L82 PathProgramCache]: Analyzing trace with hash -138012862, now seen corresponding path program 1 times [2021-08-26 02:12:20,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:12:20,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122453686] [2021-08-26 02:12:20,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:12:20,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:12:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:12:20,736 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 02:12:20,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:12:20,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122453686] [2021-08-26 02:12:20,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122453686] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:12:20,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:12:20,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 02:12:20,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971095103] [2021-08-26 02:12:20,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 02:12:20,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:12:20,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 02:12:20,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:12:20,739 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:12:20,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:12:20,816 INFO L93 Difference]: Finished difference Result 91 states and 104 transitions. [2021-08-26 02:12:20,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 02:12:20,816 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-08-26 02:12:20,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:12:20,817 INFO L225 Difference]: With dead ends: 91 [2021-08-26 02:12:20,817 INFO L226 Difference]: Without dead ends: 71 [2021-08-26 02:12:20,817 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-26 02:12:20,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-08-26 02:12:20,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-08-26 02:12:20,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 63 states have (on average 1.253968253968254) internal successors, (79), 70 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 02:12:20,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2021-08-26 02:12:20,820 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 17 [2021-08-26 02:12:20,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:12:20,820 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2021-08-26 02:12:20,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:12:20,821 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2021-08-26 02:12:20,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-26 02:12:20,821 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:12:20,821 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:12:20,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-26 02:12:20,822 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:12:20,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:12:20,822 INFO L82 PathProgramCache]: Analyzing trace with hash -472870040, now seen corresponding path program 1 times [2021-08-26 02:12:20,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:12:20,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961418169] [2021-08-26 02:12:20,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:12:20,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:12:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:12:20,928 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 02:12:20,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:12:20,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961418169] [2021-08-26 02:12:20,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961418169] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:12:20,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124840606] [2021-08-26 02:12:20,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:12:20,930 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:12:20,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:12:20,931 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 02:12:20,964 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 02:12:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:12:20,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-26 02:12:21,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:12:21,063 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 02:12:21,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:12:21,188 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-08-26 02:12:21,189 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 77 treesize of output 43 [2021-08-26 02:12:21,202 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-26 02:12:21,202 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 40 treesize of output 40 [2021-08-26 02:12:21,345 INFO L354 Elim1Store]: treesize reduction 100, result has 21.9 percent of original size [2021-08-26 02:12:21,345 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 74 treesize of output 64 [2021-08-26 02:12:21,992 INFO L354 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2021-08-26 02:12:21,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 38 [2021-08-26 02:12:22,010 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 02:12:22,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124840606] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:12:22,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:12:22,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2021-08-26 02:12:22,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770243487] [2021-08-26 02:12:22,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 02:12:22,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:12:22,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 02:12:22,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-08-26 02:12:22,011 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 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 02:12:22,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:12:22,230 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2021-08-26 02:12:22,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 02:12:22,231 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 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 19 [2021-08-26 02:12:22,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:12:22,232 INFO L225 Difference]: With dead ends: 134 [2021-08-26 02:12:22,232 INFO L226 Difference]: Without dead ends: 132 [2021-08-26 02:12:22,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 124.3ms TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-08-26 02:12:22,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-08-26 02:12:22,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 84. [2021-08-26 02:12:22,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 76 states have (on average 1.236842105263158) internal successors, (94), 83 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 02:12:22,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2021-08-26 02:12:22,249 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 19 [2021-08-26 02:12:22,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:12:22,250 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2021-08-26 02:12:22,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 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 02:12:22,250 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2021-08-26 02:12:22,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-26 02:12:22,251 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:12:22,251 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:12:22,272 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 02:12:22,469 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,SelfDestructingSolverStorable5 [2021-08-26 02:12:22,470 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:12:22,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:12:22,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1456359625, now seen corresponding path program 1 times [2021-08-26 02:12:22,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:12:22,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159202563] [2021-08-26 02:12:22,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:12:22,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:12:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:12:22,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:12:22,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:12:22,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159202563] [2021-08-26 02:12:22,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159202563] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:12:22,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:12:22,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:12:22,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371132777] [2021-08-26 02:12:22,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:12:22,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:12:22,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:12:22,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:12:22,497 INFO L87 Difference]: Start difference. First operand 84 states and 94 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 02:12:22,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:12:22,521 INFO L93 Difference]: Finished difference Result 174 states and 199 transitions. [2021-08-26 02:12:22,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:12:22,521 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 02:12:22,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:12:22,522 INFO L225 Difference]: With dead ends: 174 [2021-08-26 02:12:22,522 INFO L226 Difference]: Without dead ends: 108 [2021-08-26 02:12:22,523 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:12:22,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-08-26 02:12:22,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 97. [2021-08-26 02:12:22,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 89 states have (on average 1.202247191011236) internal successors, (107), 96 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 02:12:22,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2021-08-26 02:12:22,526 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 20 [2021-08-26 02:12:22,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:12:22,526 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2021-08-26 02:12:22,526 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 02:12:22,526 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2021-08-26 02:12:22,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-26 02:12:22,527 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:12:22,527 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] [2021-08-26 02:12:22,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-26 02:12:22,528 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:12:22,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:12:22,528 INFO L82 PathProgramCache]: Analyzing trace with hash 886899864, now seen corresponding path program 1 times [2021-08-26 02:12:22,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:12:22,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369682188] [2021-08-26 02:12:22,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:12:22,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:12:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:12:22,551 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-26 02:12:22,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:12:22,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369682188] [2021-08-26 02:12:22,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369682188] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:12:22,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:12:22,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:12:22,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66956199] [2021-08-26 02:12:22,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:12:22,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:12:22,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:12:22,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:12:22,554 INFO L87 Difference]: Start difference. First operand 97 states and 107 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:12:22,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:12:22,579 INFO L93 Difference]: Finished difference Result 201 states and 228 transitions. [2021-08-26 02:12:22,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:12:22,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-08-26 02:12:22,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:12:22,580 INFO L225 Difference]: With dead ends: 201 [2021-08-26 02:12:22,580 INFO L226 Difference]: Without dead ends: 122 [2021-08-26 02:12:22,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:12:22,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-08-26 02:12:22,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 110. [2021-08-26 02:12:22,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 102 states have (on average 1.1862745098039216) internal successors, (121), 109 states have internal predecessors, (121), 0 states have call successors, (0), 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 02:12:22,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2021-08-26 02:12:22,584 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 27 [2021-08-26 02:12:22,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:12:22,584 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2021-08-26 02:12:22,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:12:22,584 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2021-08-26 02:12:22,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-26 02:12:22,585 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:12:22,585 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] [2021-08-26 02:12:22,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-26 02:12:22,585 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:12:22,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:12:22,586 INFO L82 PathProgramCache]: Analyzing trace with hash 2041801735, now seen corresponding path program 1 times [2021-08-26 02:12:22,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:12:22,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499906196] [2021-08-26 02:12:22,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:12:22,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:12:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:12:22,742 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:12:22,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:12:22,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499906196] [2021-08-26 02:12:22,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499906196] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:12:22,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621501209] [2021-08-26 02:12:22,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:12:22,743 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:12:22,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:12:22,744 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 02:12:22,746 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 02:12:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:12:22,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 25 conjunts are in the unsatisfiable core [2021-08-26 02:12:22,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:12:22,884 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 02:12:22,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:12:22,958 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-08-26 02:12:22,959 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 83 treesize of output 49 [2021-08-26 02:12:22,984 INFO L354 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2021-08-26 02:12:22,985 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 62 treesize of output 66 [2021-08-26 02:12:23,087 INFO L354 Elim1Store]: treesize reduction 112, result has 20.0 percent of original size [2021-08-26 02:12:23,088 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 74 treesize of output 57 [2021-08-26 02:12:23,432 INFO L354 Elim1Store]: treesize reduction 207, result has 17.9 percent of original size [2021-08-26 02:12:23,433 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 8 case distinctions, treesize of input 202 treesize of output 117 [2021-08-26 02:12:23,449 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-08-26 02:12:23,449 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 169 treesize of output 179 [2021-08-26 02:12:23,780 INFO L354 Elim1Store]: treesize reduction 232, result has 15.3 percent of original size [2021-08-26 02:12:23,781 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 7 new quantified variables, introduced 15 case distinctions, treesize of input 146 treesize of output 101 [2021-08-26 02:12:25,958 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-08-26 02:12:25,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 115 treesize of output 69 [2021-08-26 02:12:25,999 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:12:25,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621501209] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:12:25,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:12:25,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2021-08-26 02:12:25,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220258644] [2021-08-26 02:12:26,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-26 02:12:26,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:12:26,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-26 02:12:26,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-08-26 02:12:26,000 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 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 02:12:29,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:12:29,464 INFO L93 Difference]: Finished difference Result 180 states and 196 transitions. [2021-08-26 02:12:29,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 02:12:29,465 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 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 28 [2021-08-26 02:12:29,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:12:29,466 INFO L225 Difference]: With dead ends: 180 [2021-08-26 02:12:29,467 INFO L226 Difference]: Without dead ends: 178 [2021-08-26 02:12:29,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 349.6ms TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-08-26 02:12:29,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-08-26 02:12:29,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 126. [2021-08-26 02:12:29,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 125 states have internal predecessors, (138), 0 states have call successors, (0), 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 02:12:29,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 138 transitions. [2021-08-26 02:12:29,472 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 138 transitions. Word has length 28 [2021-08-26 02:12:29,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:12:29,474 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 138 transitions. [2021-08-26 02:12:29,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 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 02:12:29,474 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 138 transitions. [2021-08-26 02:12:29,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-26 02:12:29,476 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:12:29,476 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 02:12:29,506 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 02:12:29,685 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,SelfDestructingSolverStorable8 [2021-08-26 02:12:29,685 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:12:29,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:12:29,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1259768676, now seen corresponding path program 1 times [2021-08-26 02:12:29,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:12:29,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448509041] [2021-08-26 02:12:29,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:12:29,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:12:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:12:29,721 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 02:12:29,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:12:29,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448509041] [2021-08-26 02:12:29,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448509041] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:12:29,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:12:29,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:12:29,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788692337] [2021-08-26 02:12:29,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:12:29,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:12:29,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:12:29,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:12:29,723 INFO L87 Difference]: Start difference. First operand 126 states and 138 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 02:12:29,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:12:29,734 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2021-08-26 02:12:29,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:12:29,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 02:12:29,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:12:29,736 INFO L225 Difference]: With dead ends: 129 [2021-08-26 02:12:29,736 INFO L226 Difference]: Without dead ends: 127 [2021-08-26 02:12:29,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:12:29,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-08-26 02:12:29,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-08-26 02:12:29,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 119 states have (on average 1.1680672268907564) internal successors, (139), 126 states have internal predecessors, (139), 0 states have call successors, (0), 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 02:12:29,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 139 transitions. [2021-08-26 02:12:29,740 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 139 transitions. Word has length 29 [2021-08-26 02:12:29,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:12:29,741 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 139 transitions. [2021-08-26 02:12:29,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 02:12:29,741 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 139 transitions. [2021-08-26 02:12:29,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-26 02:12:29,742 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:12:29,742 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 02:12:29,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-26 02:12:29,742 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:12:29,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:12:29,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1259766754, now seen corresponding path program 1 times [2021-08-26 02:12:29,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:12:29,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382464498] [2021-08-26 02:12:29,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:12:29,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:12:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:12:29,991 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 02:12:29,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:12:29,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382464498] [2021-08-26 02:12:29,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382464498] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:12:29,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158006388] [2021-08-26 02:12:29,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:12:29,992 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:12:29,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:12:30,008 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 02:12:30,053 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 02:12:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:12:30,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 02:12:30,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:12:30,292 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 02:12:30,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:12:30,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:12:30,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:12:30,357 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:12:30,358 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 163 treesize of output 125 [2021-08-26 02:12:30,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:12:30,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:12:30,380 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:12:30,380 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 97 treesize of output 59 [2021-08-26 02:12:30,397 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-26 02:12:30,397 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 56 treesize of output 56 [2021-08-26 02:12:30,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:12:30,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:12:30,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:12:30,489 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:12:30,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 93 [2021-08-26 02:12:30,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:12:30,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:12:30,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:12:30,504 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-26 02:12:30,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 88 [2021-08-26 02:12:30,510 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 79 treesize of output 71 [2021-08-26 02:12:31,157 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:12:31,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 58 [2021-08-26 02:12:31,162 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:12:31,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 30 [2021-08-26 02:12:31,225 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 27 treesize of output 19 [2021-08-26 02:12:31,237 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 02:12:31,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158006388] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:12:31,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:12:31,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 12 [2021-08-26 02:12:31,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821340095] [2021-08-26 02:12:31,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-26 02:12:31,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:12:31,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-26 02:12:31,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-08-26 02:12:31,240 INFO L87 Difference]: Start difference. First operand 127 states and 139 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 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 02:12:31,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:12:31,652 INFO L93 Difference]: Finished difference Result 153 states and 167 transitions. [2021-08-26 02:12:31,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 02:12:31,652 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 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 02:12:31,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:12:31,653 INFO L225 Difference]: With dead ends: 153 [2021-08-26 02:12:31,654 INFO L226 Difference]: Without dead ends: 151 [2021-08-26 02:12:31,654 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 335.1ms TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-08-26 02:12:31,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-08-26 02:12:31,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 136. [2021-08-26 02:12:31,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 128 states have (on average 1.1640625) internal successors, (149), 135 states have internal predecessors, (149), 0 states have call successors, (0), 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 02:12:31,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 149 transitions. [2021-08-26 02:12:31,662 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 149 transitions. Word has length 29 [2021-08-26 02:12:31,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:12:31,663 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 149 transitions. [2021-08-26 02:12:31,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 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 02:12:31,663 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 149 transitions. [2021-08-26 02:12:31,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-26 02:12:31,664 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:12:31,665 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] [2021-08-26 02:12:31,693 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 02:12:31,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:12:31,885 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:12:31,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:12:31,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1992708989, now seen corresponding path program 1 times [2021-08-26 02:12:31,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:12:31,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483289663] [2021-08-26 02:12:31,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:12:31,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:12:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:12:32,072 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:12:32,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:12:32,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483289663] [2021-08-26 02:12:32,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483289663] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:12:32,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497199109] [2021-08-26 02:12:32,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:12:32,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:12:32,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:12:32,089 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 02:12:32,094 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 02:12:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:12:32,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 37 conjunts are in the unsatisfiable core [2021-08-26 02:12:32,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:12:32,407 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 02:12:32,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:12:32,482 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:12:32,482 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 169 treesize of output 131 [2021-08-26 02:12:32,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:12:32,503 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:12:32,503 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 103 treesize of output 65 [2021-08-26 02:12:32,521 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:12:32,521 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 62 treesize of output 66 [2021-08-26 02:12:32,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:12:32,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:12:32,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-08-26 02:12:32,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:12:32,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:12:32,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-08-26 02:12:32,936 INFO L354 Elim1Store]: treesize reduction 144, result has 18.6 percent of original size [2021-08-26 02:12:32,937 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 8 case distinctions, treesize of input 276 treesize of output 155 [2021-08-26 02:12:32,984 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-08-26 02:12:32,985 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 8 case distinctions, treesize of input 151 treesize of output 128 [2021-08-26 02:12:33,004 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-08-26 02:12:33,005 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 119 treesize of output 121 [2021-08-26 02:12:33,241 INFO L354 Elim1Store]: treesize reduction 208, result has 16.8 percent of original size [2021-08-26 02:12:33,241 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 15 case distinctions, treesize of input 235 treesize of output 142 [2021-08-26 02:12:33,292 INFO L354 Elim1Store]: treesize reduction 384, result has 14.7 percent of original size [2021-08-26 02:12:33,297 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 15 case distinctions, treesize of input 201 treesize of output 179 [2021-08-26 02:12:34,879 INFO L354 Elim1Store]: treesize reduction 117, result has 12.0 percent of original size [2021-08-26 02:12:34,880 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 175 treesize of output 96 [2021-08-26 02:12:34,890 INFO L354 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2021-08-26 02:12:34,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 78 treesize of output 58 [2021-08-26 02:12:34,923 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:12:34,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497199109] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:12:34,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:12:34,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 14 [2021-08-26 02:12:34,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473414339] [2021-08-26 02:12:34,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-26 02:12:34,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:12:34,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-26 02:12:34,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-08-26 02:12:34,933 INFO L87 Difference]: Start difference. First operand 136 states and 149 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 0 states have call successors, (0), 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 02:12:35,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:12:35,533 INFO L93 Difference]: Finished difference Result 169 states and 184 transitions. [2021-08-26 02:12:35,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 02:12:35,534 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 0 states have call successors, (0), 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 02:12:35,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:12:35,535 INFO L225 Difference]: With dead ends: 169 [2021-08-26 02:12:35,535 INFO L226 Difference]: Without dead ends: 167 [2021-08-26 02:12:35,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 436.4ms TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-08-26 02:12:35,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-08-26 02:12:35,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 139. [2021-08-26 02:12:35,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 131 states have (on average 1.1603053435114503) internal successors, (152), 138 states have internal predecessors, (152), 0 states have call successors, (0), 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 02:12:35,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 152 transitions. [2021-08-26 02:12:35,539 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 152 transitions. Word has length 31 [2021-08-26 02:12:35,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:12:35,539 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 152 transitions. [2021-08-26 02:12:35,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 0 states have call successors, (0), 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 02:12:35,539 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 152 transitions. [2021-08-26 02:12:35,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-26 02:12:35,540 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:12:35,540 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:12:35,567 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 02:12:35,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:12:35,740 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:12:35,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:12:35,741 INFO L82 PathProgramCache]: Analyzing trace with hash 509365297, now seen corresponding path program 1 times [2021-08-26 02:12:35,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:12:35,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622302168] [2021-08-26 02:12:35,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:12:35,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:12:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:12:35,774 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-26 02:12:35,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:12:35,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622302168] [2021-08-26 02:12:35,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622302168] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:12:35,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:12:35,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:12:35,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895272864] [2021-08-26 02:12:35,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:12:35,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:12:35,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:12:35,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:12:35,776 INFO L87 Difference]: Start difference. First operand 139 states and 152 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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 02:12:35,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:12:35,801 INFO L93 Difference]: Finished difference Result 204 states and 226 transitions. [2021-08-26 02:12:35,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:12:35,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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 36 [2021-08-26 02:12:35,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:12:35,802 INFO L225 Difference]: With dead ends: 204 [2021-08-26 02:12:35,802 INFO L226 Difference]: Without dead ends: 111 [2021-08-26 02:12:35,803 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:12:35,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-08-26 02:12:35,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 96. [2021-08-26 02:12:35,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 91 states have (on average 1.120879120879121) internal successors, (102), 95 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 02:12:35,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2021-08-26 02:12:35,806 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 36 [2021-08-26 02:12:35,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:12:35,806 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2021-08-26 02:12:35,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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 02:12:35,806 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2021-08-26 02:12:35,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-26 02:12:35,806 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:12:35,806 INFO L512 BasicCegarLoop]: trace histogram [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 02:12:35,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-26 02:12:35,807 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:12:35,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:12:35,807 INFO L82 PathProgramCache]: Analyzing trace with hash 525270376, now seen corresponding path program 1 times [2021-08-26 02:12:35,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:12:35,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997806293] [2021-08-26 02:12:35,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:12:35,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:12:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:12:35,838 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-26 02:12:35,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:12:35,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997806293] [2021-08-26 02:12:35,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997806293] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:12:35,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:12:35,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 02:12:35,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182666223] [2021-08-26 02:12:35,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:12:35,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:12:35,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:12:35,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:12:35,840 INFO L87 Difference]: Start difference. First operand 96 states and 102 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 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 02:12:35,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:12:35,868 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2021-08-26 02:12:35,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 02:12:35,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-08-26 02:12:35,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:12:35,870 INFO L225 Difference]: With dead ends: 118 [2021-08-26 02:12:35,870 INFO L226 Difference]: Without dead ends: 107 [2021-08-26 02:12:35,870 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:12:35,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-08-26 02:12:35,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2021-08-26 02:12:35,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.11) internal successors, (111), 104 states have internal predecessors, (111), 0 states have call successors, (0), 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 02:12:35,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2021-08-26 02:12:35,874 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 37 [2021-08-26 02:12:35,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:12:35,874 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2021-08-26 02:12:35,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 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 02:12:35,874 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2021-08-26 02:12:35,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-26 02:12:35,874 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:12:35,874 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] [2021-08-26 02:12:35,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-26 02:12:35,875 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:12:35,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:12:35,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1226334954, now seen corresponding path program 1 times [2021-08-26 02:12:35,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:12:35,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582662663] [2021-08-26 02:12:35,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:12:35,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:12:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:12:36,060 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:12:36,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:12:36,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582662663] [2021-08-26 02:12:36,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582662663] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:12:36,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909002862] [2021-08-26 02:12:36,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:12:36,060 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:12:36,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:12:36,062 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 02:12:36,063 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 02:12:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:12:36,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 29 conjunts are in the unsatisfiable core [2021-08-26 02:12:36,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:12:36,511 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 02:12:36,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:12:36,562 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:12:36,563 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 163 treesize of output 125 [2021-08-26 02:12:36,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:12:36,578 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-08-26 02:12:36,579 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 118 treesize of output 68 [2021-08-26 02:12:36,584 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-08-26 02:12:36,585 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 68 treesize of output 68 [2021-08-26 02:12:36,633 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:12:36,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 114 treesize of output 82 [2021-08-26 02:12:36,638 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-26 02:12:36,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 69 [2021-08-26 02:12:37,327 INFO L354 Elim1Store]: treesize reduction 46, result has 6.1 percent of original size [2021-08-26 02:12:37,328 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 02:12:37,339 INFO L354 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2021-08-26 02:12:37,340 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 02:12:37,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:12:37,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909002862] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:12:37,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:12:37,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2021-08-26 02:12:37,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751476386] [2021-08-26 02:12:37,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-26 02:12:37,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:12:37,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-26 02:12:37,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-08-26 02:12:37,373 INFO L87 Difference]: Start difference. First operand 105 states and 111 transitions. Second operand has 15 states, 15 states have (on average 4.4) internal successors, (66), 15 states have internal predecessors, (66), 0 states have call successors, (0), 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 02:12:39,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:12:39,365 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2021-08-26 02:12:39,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 02:12:39,365 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.4) internal successors, (66), 15 states have internal predecessors, (66), 0 states have call successors, (0), 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 37 [2021-08-26 02:12:39,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:12:39,366 INFO L225 Difference]: With dead ends: 111 [2021-08-26 02:12:39,366 INFO L226 Difference]: Without dead ends: 80 [2021-08-26 02:12:39,366 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 208.8ms TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-08-26 02:12:39,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-08-26 02:12:39,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-08-26 02:12:39,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.12) internal successors, (84), 79 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 02:12:39,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2021-08-26 02:12:39,370 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 37 [2021-08-26 02:12:39,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:12:39,370 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2021-08-26 02:12:39,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.4) internal successors, (66), 15 states have internal predecessors, (66), 0 states have call successors, (0), 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 02:12:39,371 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2021-08-26 02:12:39,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-08-26 02:12:39,371 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:12:39,371 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:12:39,392 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 02:12:39,589 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,SelfDestructingSolverStorable14 [2021-08-26 02:12:39,590 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:12:39,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:12:39,590 INFO L82 PathProgramCache]: Analyzing trace with hash 778254669, now seen corresponding path program 1 times [2021-08-26 02:12:39,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:12:39,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613927420] [2021-08-26 02:12:39,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:12:39,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:12:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:12:39,800 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:12:39,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:12:39,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613927420] [2021-08-26 02:12:39,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613927420] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:12:39,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35330072] [2021-08-26 02:12:39,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:12:39,800 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:12:39,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:12:39,801 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 02:12:39,802 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 02:12:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:12:40,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 35 conjunts are in the unsatisfiable core [2021-08-26 02:12:40,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:12:40,287 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 02:12:40,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:12:40,342 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-08-26 02:12:40,343 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 83 treesize of output 49 [2021-08-26 02:12:40,354 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:12:40,355 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 46 treesize of output 50 [2021-08-26 02:12:40,423 INFO L354 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2021-08-26 02:12:40,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 41 [2021-08-26 02:12:40,729 INFO L354 Elim1Store]: treesize reduction 207, result has 17.9 percent of original size [2021-08-26 02:12:40,730 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 8 case distinctions, treesize of input 208 treesize of output 123 [2021-08-26 02:12:40,762 INFO L354 Elim1Store]: treesize reduction 92, result has 31.9 percent of original size [2021-08-26 02:12:40,769 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 183 treesize of output 206 [2021-08-26 02:12:41,369 INFO L354 Elim1Store]: treesize reduction 244, result has 14.7 percent of original size [2021-08-26 02:12:41,369 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 15 case distinctions, treesize of input 147 treesize of output 99 [2021-08-26 02:12:42,224 INFO L354 Elim1Store]: treesize reduction 441, result has 11.8 percent of original size [2021-08-26 02:12:42,224 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 17 case distinctions, treesize of input 327 treesize of output 159 [2021-08-26 02:12:42,244 INFO L354 Elim1Store]: treesize reduction 60, result has 50.4 percent of original size [2021-08-26 02:12:42,245 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 274 treesize of output 302 [2021-08-26 02:12:48,035 INFO L354 Elim1Store]: treesize reduction 408, result has 12.1 percent of original size [2021-08-26 02:12:48,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 258 treesize of output 142 [2021-08-26 02:13:10,962 INFO L354 Elim1Store]: treesize reduction 168, result has 13.0 percent of original size [2021-08-26 02:13:10,962 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 10 new quantified variables, introduced 21 case distinctions, treesize of input 215 treesize of output 104 [2021-08-26 02:13:11,223 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:13:11,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35330072] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:13:11,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:13:11,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-08-26 02:13:11,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478377826] [2021-08-26 02:13:11,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-26 02:13:11,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:13:11,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-26 02:13:11,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=271, Unknown=7, NotChecked=0, Total=342 [2021-08-26 02:13:11,225 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand has 19 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 19 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 02:14:13,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:14:13,954 INFO L93 Difference]: Finished difference Result 149 states and 159 transitions. [2021-08-26 02:14:13,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-26 02:14:13,955 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 19 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 38 [2021-08-26 02:14:13,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:14:13,956 INFO L225 Difference]: With dead ends: 149 [2021-08-26 02:14:13,956 INFO L226 Difference]: Without dead ends: 147 [2021-08-26 02:14:13,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 17899.3ms TimeCoverageRelationStatistics Valid=141, Invalid=603, Unknown=12, NotChecked=0, Total=756 [2021-08-26 02:14:13,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-08-26 02:14:13,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 78. [2021-08-26 02:14:13,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 74 states have (on average 1.1081081081081081) internal successors, (82), 77 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 02:14:13,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2021-08-26 02:14:13,961 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 38 [2021-08-26 02:14:13,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:14:13,962 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2021-08-26 02:14:13,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 19 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 02:14:13,962 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2021-08-26 02:14:13,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-26 02:14:13,964 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:14:13,965 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] [2021-08-26 02:14:13,993 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 02:14:14,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-26 02:14:14,185 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:14:14,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:14:14,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1793269558, now seen corresponding path program 1 times [2021-08-26 02:14:14,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:14:14,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179283670] [2021-08-26 02:14:14,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:14:14,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:14:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:14:14,452 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:14:14,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:14:14,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179283670] [2021-08-26 02:14:14,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179283670] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:14:14,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897172550] [2021-08-26 02:14:14,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:14:14,453 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:14:14,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:14:14,462 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 02:14:14,463 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 02:14:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:14:15,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 40 conjunts are in the unsatisfiable core [2021-08-26 02:14:15,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:14:15,210 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 02:14:15,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:15,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:14:15,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:15,268 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:14:15,268 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 169 treesize of output 131 [2021-08-26 02:14:15,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:15,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:15,288 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:14:15,288 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 103 treesize of output 65 [2021-08-26 02:14:15,302 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:14:15,302 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 62 treesize of output 66 [2021-08-26 02:14:15,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:15,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:15,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-08-26 02:14:15,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:15,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:15,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-08-26 02:14:15,412 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 13 treesize of output 9 [2021-08-26 02:14:15,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:14:15,827 INFO L354 Elim1Store]: treesize reduction 144, result has 18.6 percent of original size [2021-08-26 02:14:15,827 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 8 case distinctions, treesize of input 340 treesize of output 203 [2021-08-26 02:14:15,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:14:15,880 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-08-26 02:14:15,881 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 8 case distinctions, treesize of input 215 treesize of output 192 [2021-08-26 02:14:15,929 INFO L354 Elim1Store]: treesize reduction 96, result has 26.2 percent of original size [2021-08-26 02:14:15,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 176 treesize of output 151 [2021-08-26 02:14:15,944 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-08-26 02:14:15,945 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 137 treesize of output 139 [2021-08-26 02:14:16,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:16,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:14:16,145 INFO L354 Elim1Store]: treesize reduction 208, result has 16.8 percent of original size [2021-08-26 02:14:16,145 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 15 case distinctions, treesize of input 263 treesize of output 158 [2021-08-26 02:14:16,156 INFO L354 Elim1Store]: treesize reduction 57, result has 16.2 percent of original size [2021-08-26 02:14:16,156 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 229 treesize of output 220 [2021-08-26 02:14:16,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:16,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:14:16,207 INFO L354 Elim1Store]: treesize reduction 384, result has 14.7 percent of original size [2021-08-26 02:14:16,207 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 15 case distinctions, treesize of input 217 treesize of output 195 [2021-08-26 02:14:18,436 INFO L354 Elim1Store]: treesize reduction 76, result has 14.6 percent of original size [2021-08-26 02:14:18,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 196 treesize of output 118 [2021-08-26 02:14:18,452 INFO L354 Elim1Store]: treesize reduction 88, result has 1.1 percent of original size [2021-08-26 02:14:18,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 112 treesize of output 79 [2021-08-26 02:14:18,583 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-08-26 02:14:18,583 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 40 treesize of output 26 [2021-08-26 02:14:18,591 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:14:18,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897172550] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:14:18,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:14:18,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-08-26 02:14:18,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018791354] [2021-08-26 02:14:18,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-26 02:14:18,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:14:18,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-26 02:14:18,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-08-26 02:14:18,593 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 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 02:14:19,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:14:19,188 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2021-08-26 02:14:19,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 02:14:19,189 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 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 40 [2021-08-26 02:14:19,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:14:19,189 INFO L225 Difference]: With dead ends: 101 [2021-08-26 02:14:19,189 INFO L226 Difference]: Without dead ends: 99 [2021-08-26 02:14:19,190 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 533.1ms TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-08-26 02:14:19,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-08-26 02:14:19,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 84. [2021-08-26 02:14:19,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 80 states have (on average 1.1125) internal successors, (89), 83 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 02:14:19,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2021-08-26 02:14:19,194 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 40 [2021-08-26 02:14:19,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:14:19,194 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2021-08-26 02:14:19,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 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 02:14:19,194 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2021-08-26 02:14:19,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-26 02:14:19,195 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:14:19,195 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:14:19,219 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 02:14:19,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:14:19,414 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:14:19,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:14:19,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1428751921, now seen corresponding path program 1 times [2021-08-26 02:14:19,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:14:19,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141596831] [2021-08-26 02:14:19,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:14:19,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:14:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:14:19,452 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-26 02:14:19,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:14:19,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141596831] [2021-08-26 02:14:19,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141596831] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:14:19,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:14:19,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:14:19,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772847613] [2021-08-26 02:14:19,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:14:19,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:14:19,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:14:19,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:14:19,454 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 02:14:19,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:14:19,472 INFO L93 Difference]: Finished difference Result 110 states and 117 transitions. [2021-08-26 02:14:19,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:14:19,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 02:14:19,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:14:19,473 INFO L225 Difference]: With dead ends: 110 [2021-08-26 02:14:19,473 INFO L226 Difference]: Without dead ends: 98 [2021-08-26 02:14:19,474 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:14:19,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-08-26 02:14:19,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 84. [2021-08-26 02:14:19,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 80 states have (on average 1.1) internal successors, (88), 83 states have internal predecessors, (88), 0 states have call successors, (0), 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 02:14:19,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2021-08-26 02:14:19,478 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 41 [2021-08-26 02:14:19,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:14:19,478 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2021-08-26 02:14:19,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 02:14:19,479 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2021-08-26 02:14:19,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-26 02:14:19,479 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:14:19,479 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:14:19,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-26 02:14:19,480 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:14:19,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:14:19,480 INFO L82 PathProgramCache]: Analyzing trace with hash 755507507, now seen corresponding path program 1 times [2021-08-26 02:14:19,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:14:19,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184470471] [2021-08-26 02:14:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:14:19,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:14:19,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:14:19,753 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:14:19,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:14:19,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184470471] [2021-08-26 02:14:19,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184470471] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:14:19,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317408117] [2021-08-26 02:14:19,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:14:19,763 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:14:19,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:14:19,764 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 02:14:19,764 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 02:14:20,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:14:20,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 46 conjunts are in the unsatisfiable core [2021-08-26 02:14:20,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:14:20,602 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 02:14:20,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:20,668 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:14:20,668 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 169 treesize of output 131 [2021-08-26 02:14:20,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:20,685 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-08-26 02:14:20,685 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 71 treesize of output 62 [2021-08-26 02:14:20,696 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:14:20,697 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 62 treesize of output 66 [2021-08-26 02:14:20,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:20,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:20,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-08-26 02:14:20,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:20,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:20,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-08-26 02:14:21,020 INFO L354 Elim1Store]: treesize reduction 144, result has 18.6 percent of original size [2021-08-26 02:14:21,020 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 8 case distinctions, treesize of input 282 treesize of output 161 [2021-08-26 02:14:21,071 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-08-26 02:14:21,071 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 8 case distinctions, treesize of input 157 treesize of output 134 [2021-08-26 02:14:21,095 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:14:21,095 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 125 treesize of output 140 [2021-08-26 02:14:21,310 INFO L354 Elim1Store]: treesize reduction 162, result has 17.8 percent of original size [2021-08-26 02:14:21,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 143 treesize of output 124 [2021-08-26 02:14:21,357 INFO L354 Elim1Store]: treesize reduction 202, result has 17.6 percent of original size [2021-08-26 02:14:21,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 133 treesize of output 135 [2021-08-26 02:14:21,990 INFO L354 Elim1Store]: treesize reduction 380, result has 13.4 percent of original size [2021-08-26 02:14:21,990 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 17 case distinctions, treesize of input 502 treesize of output 246 [2021-08-26 02:14:22,096 INFO L354 Elim1Store]: treesize reduction 832, result has 9.1 percent of original size [2021-08-26 02:14:22,097 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 17 case distinctions, treesize of input 497 treesize of output 371 [2021-08-26 02:14:22,119 INFO L354 Elim1Store]: treesize reduction 60, result has 50.4 percent of original size [2021-08-26 02:14:22,120 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 356 treesize of output 384 [2021-08-26 02:14:23,482 INFO L354 Elim1Store]: treesize reduction 372, result has 13.1 percent of original size [2021-08-26 02:14:23,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 407 treesize of output 207 [2021-08-26 02:14:23,593 INFO L354 Elim1Store]: treesize reduction 860, result has 10.8 percent of original size [2021-08-26 02:14:23,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 361 treesize of output 333 [2021-08-26 02:14:38,447 INFO L354 Elim1Store]: treesize reduction 237, result has 9.2 percent of original size [2021-08-26 02:14:38,448 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 322 treesize of output 154 [2021-08-26 02:14:38,481 INFO L354 Elim1Store]: treesize reduction 149, result has 5.1 percent of original size [2021-08-26 02:14:38,481 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 7 new quantified variables, introduced 21 case distinctions, treesize of input 133 treesize of output 113 [2021-08-26 02:14:38,522 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:14:38,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317408117] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:14:38,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:14:38,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-08-26 02:14:38,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652983229] [2021-08-26 02:14:38,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-26 02:14:38,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:14:38,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-26 02:14:38,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-08-26 02:14:38,524 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 17 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 02:14:44,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:14:44,993 INFO L93 Difference]: Finished difference Result 131 states and 138 transitions. [2021-08-26 02:14:44,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-26 02:14:44,994 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 17 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 41 [2021-08-26 02:14:44,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:14:44,994 INFO L225 Difference]: With dead ends: 131 [2021-08-26 02:14:44,994 INFO L226 Difference]: Without dead ends: 129 [2021-08-26 02:14:44,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 848.7ms TimeCoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2021-08-26 02:14:44,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-08-26 02:14:44,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 82. [2021-08-26 02:14:44,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 79 states have (on average 1.0886075949367089) internal successors, (86), 81 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 02:14:44,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2021-08-26 02:14:44,999 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 41 [2021-08-26 02:14:45,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:14:45,000 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2021-08-26 02:14:45,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 17 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 02:14:45,000 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2021-08-26 02:14:45,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-08-26 02:14:45,000 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:14:45,000 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 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 02:14:45,044 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 02:14:45,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:14:45,213 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:14:45,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:14:45,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1699655007, now seen corresponding path program 1 times [2021-08-26 02:14:45,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:14:45,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348805242] [2021-08-26 02:14:45,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:14:45,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:14:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:14:45,512 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:14:45,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:14:45,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348805242] [2021-08-26 02:14:45,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348805242] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:14:45,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835485221] [2021-08-26 02:14:45,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:14:45,513 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:14:45,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:14:45,514 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 02:14:45,515 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 02:14:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:14:46,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 59 conjunts are in the unsatisfiable core [2021-08-26 02:14:46,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:14:46,907 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 02:14:46,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:46,979 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:14:46,979 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 169 treesize of output 131 [2021-08-26 02:14:46,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:46,996 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:14:46,996 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 103 treesize of output 65 [2021-08-26 02:14:47,010 INFO L354 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2021-08-26 02:14:47,010 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 78 treesize of output 82 [2021-08-26 02:14:47,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:47,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:47,095 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:14:47,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 83 [2021-08-26 02:14:47,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:47,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:47,104 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:14:47,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 61 [2021-08-26 02:14:47,468 INFO L354 Elim1Store]: treesize reduction 148, result has 16.4 percent of original size [2021-08-26 02:14:47,469 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 8 case distinctions, treesize of input 329 treesize of output 184 [2021-08-26 02:14:47,518 INFO L354 Elim1Store]: treesize reduction 272, result has 15.3 percent of original size [2021-08-26 02:14:47,518 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 8 case distinctions, treesize of input 276 treesize of output 164 [2021-08-26 02:14:47,542 INFO L354 Elim1Store]: treesize reduction 108, result has 20.0 percent of original size [2021-08-26 02:14:47,543 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 155 treesize of output 162 [2021-08-26 02:14:47,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:47,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:47,761 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-08-26 02:14:47,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 171 treesize of output 122 [2021-08-26 02:14:47,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:47,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:47,773 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-08-26 02:14:47,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 121 treesize of output 117 [2021-08-26 02:14:48,286 INFO L354 Elim1Store]: treesize reduction 332, result has 13.3 percent of original size [2021-08-26 02:14:48,286 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 17 case distinctions, treesize of input 265 treesize of output 235 [2021-08-26 02:14:48,361 INFO L354 Elim1Store]: treesize reduction 260, result has 15.3 percent of original size [2021-08-26 02:14:48,361 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 6 new quantified variables, introduced 17 case distinctions, treesize of input 192 treesize of output 149 [2021-08-26 02:14:48,381 INFO L354 Elim1Store]: treesize reduction 60, result has 45.0 percent of original size [2021-08-26 02:14:48,381 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 216 treesize of output 236 [2021-08-26 02:14:48,951 INFO L354 Elim1Store]: treesize reduction 332, result has 14.4 percent of original size [2021-08-26 02:14:48,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 307 treesize of output 180 [2021-08-26 02:14:49,037 INFO L354 Elim1Store]: treesize reduction 788, result has 11.7 percent of original size [2021-08-26 02:14:49,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 318 treesize of output 290 [2021-08-26 02:14:51,617 INFO L354 Elim1Store]: treesize reduction 294, result has 8.4 percent of original size [2021-08-26 02:14:51,618 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 296 treesize of output 145 [2021-08-26 02:14:51,631 INFO L354 Elim1Store]: treesize reduction 116, result has 0.9 percent of original size [2021-08-26 02:14:51,631 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 7 new quantified variables, introduced 21 case distinctions, treesize of input 104 treesize of output 76 [2021-08-26 02:14:51,654 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:14:51,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835485221] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:14:51,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:14:51,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-08-26 02:14:51,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499638387] [2021-08-26 02:14:51,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-26 02:14:51,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:14:51,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-26 02:14:51,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-08-26 02:14:51,656 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand has 19 states, 19 states have (on average 4.473684210526316) internal successors, (85), 19 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 02:14:52,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:14:52,315 INFO L93 Difference]: Finished difference Result 129 states and 135 transitions. [2021-08-26 02:14:52,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 02:14:52,316 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.473684210526316) internal successors, (85), 19 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) Word has length 44 [2021-08-26 02:14:52,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:14:52,317 INFO L225 Difference]: With dead ends: 129 [2021-08-26 02:14:52,317 INFO L226 Difference]: Without dead ends: 127 [2021-08-26 02:14:52,317 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 587.3ms TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2021-08-26 02:14:52,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-08-26 02:14:52,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 106. [2021-08-26 02:14:52,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 103 states have (on average 1.0776699029126213) internal successors, (111), 105 states have internal predecessors, (111), 0 states have call successors, (0), 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 02:14:52,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 111 transitions. [2021-08-26 02:14:52,324 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 111 transitions. Word has length 44 [2021-08-26 02:14:52,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:14:52,324 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 111 transitions. [2021-08-26 02:14:52,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.473684210526316) internal successors, (85), 19 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 02:14:52,325 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 111 transitions. [2021-08-26 02:14:52,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-26 02:14:52,325 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:14:52,325 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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 02:14:52,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-08-26 02:14:52,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:14:52,533 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:14:52,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:14:52,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1057023877, now seen corresponding path program 1 times [2021-08-26 02:14:52,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:14:52,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586007007] [2021-08-26 02:14:52,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:14:52,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:14:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:14:53,031 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:14:53,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:14:53,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586007007] [2021-08-26 02:14:53,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586007007] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:14:53,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471649132] [2021-08-26 02:14:53,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:14:53,032 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:14:53,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:14:53,033 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 02:14:53,040 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 02:14:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:14:54,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 72 conjunts are in the unsatisfiable core [2021-08-26 02:14:54,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:14:54,533 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 02:14:54,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:54,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:54,596 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:14:54,596 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 169 treesize of output 131 [2021-08-26 02:14:54,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:54,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:14:54,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:54,617 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-08-26 02:14:54,617 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 128 treesize of output 78 [2021-08-26 02:14:54,631 INFO L354 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2021-08-26 02:14:54,631 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 78 treesize of output 82 [2021-08-26 02:14:54,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:54,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:54,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:54,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:54,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:14:54,753 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:14:54,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 96 [2021-08-26 02:14:54,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:54,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:54,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:54,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:54,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:14:54,765 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:14:54,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 64 [2021-08-26 02:14:55,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:14:55,121 INFO L354 Elim1Store]: treesize reduction 148, result has 16.4 percent of original size [2021-08-26 02:14:55,122 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 8 case distinctions, treesize of input 329 treesize of output 184 [2021-08-26 02:14:55,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:14:55,164 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-08-26 02:14:55,165 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 8 case distinctions, treesize of input 152 treesize of output 129 [2021-08-26 02:14:55,191 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-08-26 02:14:55,192 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 120 treesize of output 127 [2021-08-26 02:14:55,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:55,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:55,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:55,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:14:55,432 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-08-26 02:14:55,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 131 treesize of output 127 [2021-08-26 02:14:55,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:55,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:55,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:55,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:14:55,444 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:14:55,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 112 treesize of output 91 [2021-08-26 02:14:55,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:14:55,939 INFO L354 Elim1Store]: treesize reduction 332, result has 13.3 percent of original size [2021-08-26 02:14:55,940 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 17 case distinctions, treesize of input 264 treesize of output 234 [2021-08-26 02:14:55,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:14:56,013 INFO L354 Elim1Store]: treesize reduction 264, result has 14.0 percent of original size [2021-08-26 02:14:56,014 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 6 new quantified variables, introduced 17 case distinctions, treesize of input 191 treesize of output 144 [2021-08-26 02:14:56,034 INFO L354 Elim1Store]: treesize reduction 81, result has 4.7 percent of original size [2021-08-26 02:14:56,034 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 184 treesize of output 168 [2021-08-26 02:14:56,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:56,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:56,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:14:56,329 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-08-26 02:14:56,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 194 treesize of output 154 [2021-08-26 02:14:56,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:56,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:14:56,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:14:56,348 INFO L354 Elim1Store]: treesize reduction 132, result has 0.8 percent of original size [2021-08-26 02:14:56,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 179 treesize of output 185 [2021-08-26 02:14:56,352 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 164 treesize of output 160 [2021-08-26 02:15:00,000 INFO L354 Elim1Store]: treesize reduction 278, result has 7.6 percent of original size [2021-08-26 02:15:00,001 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 17 new quantified variables, introduced 36 case distinctions, treesize of input 489 treesize of output 183 [2021-08-26 02:15:00,058 INFO L354 Elim1Store]: treesize reduction 278, result has 2.5 percent of original size [2021-08-26 02:15:00,058 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 12 new quantified variables, introduced 36 case distinctions, treesize of input 117 treesize of output 80 [2021-08-26 02:15:00,064 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 15 treesize of output 7 [2021-08-26 02:15:00,070 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:00,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471649132] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:15:00,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:15:00,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 19 [2021-08-26 02:15:00,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609352585] [2021-08-26 02:15:00,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-26 02:15:00,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:00,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-26 02:15:00,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=291, Unknown=1, NotChecked=0, Total=342 [2021-08-26 02:15:00,071 INFO L87 Difference]: Start difference. First operand 106 states and 111 transitions. Second operand has 19 states, 19 states have (on average 4.684210526315789) internal successors, (89), 19 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 02:15:03,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:15:03,106 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2021-08-26 02:15:03,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 02:15:03,107 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.684210526315789) internal successors, (89), 19 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 47 [2021-08-26 02:15:03,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:15:03,107 INFO L225 Difference]: With dead ends: 127 [2021-08-26 02:15:03,107 INFO L226 Difference]: Without dead ends: 125 [2021-08-26 02:15:03,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2968.6ms TimeCoverageRelationStatistics Valid=89, Invalid=462, Unknown=1, NotChecked=0, Total=552 [2021-08-26 02:15:03,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-08-26 02:15:03,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 109. [2021-08-26 02:15:03,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 106 states have (on average 1.0754716981132075) internal successors, (114), 108 states have internal predecessors, (114), 0 states have call successors, (0), 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 02:15:03,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 114 transitions. [2021-08-26 02:15:03,113 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 114 transitions. Word has length 47 [2021-08-26 02:15:03,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:15:03,114 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 114 transitions. [2021-08-26 02:15:03,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.684210526315789) internal successors, (89), 19 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 02:15:03,114 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 114 transitions. [2021-08-26 02:15:03,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-26 02:15:03,114 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:03,114 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 02:15:03,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-26 02:15:03,325 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,SelfDestructingSolverStorable20 [2021-08-26 02:15:03,325 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:15:03,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:03,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1977153044, now seen corresponding path program 1 times [2021-08-26 02:15:03,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:03,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300693466] [2021-08-26 02:15:03,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:03,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:03,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:03,358 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-26 02:15:03,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:03,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300693466] [2021-08-26 02:15:03,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300693466] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:15:03,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:15:03,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 02:15:03,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863026300] [2021-08-26 02:15:03,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:15:03,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:03,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:15:03,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:15:03,360 INFO L87 Difference]: Start difference. First operand 109 states and 114 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 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 02:15:03,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:15:03,390 INFO L93 Difference]: Finished difference Result 131 states and 138 transitions. [2021-08-26 02:15:03,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 02:15:03,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 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 02:15:03,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:15:03,391 INFO L225 Difference]: With dead ends: 131 [2021-08-26 02:15:03,391 INFO L226 Difference]: Without dead ends: 120 [2021-08-26 02:15:03,391 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:15:03,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-08-26 02:15:03,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2021-08-26 02:15:03,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 115 states have (on average 1.0695652173913044) internal successors, (123), 117 states have internal predecessors, (123), 0 states have call successors, (0), 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 02:15:03,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2021-08-26 02:15:03,398 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 48 [2021-08-26 02:15:03,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:15:03,399 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions. [2021-08-26 02:15:03,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 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 02:15:03,399 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions. [2021-08-26 02:15:03,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-26 02:15:03,399 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:03,400 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 02:15:03,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-26 02:15:03,400 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:15:03,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:03,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1616749674, now seen corresponding path program 1 times [2021-08-26 02:15:03,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:03,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479424667] [2021-08-26 02:15:03,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:03,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:03,709 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:03,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:03,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479424667] [2021-08-26 02:15:03,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479424667] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:15:03,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266668388] [2021-08-26 02:15:03,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:03,710 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:15:03,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:15:03,717 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 02:15:03,718 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 02:15:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:05,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 44 conjunts are in the unsatisfiable core [2021-08-26 02:15:05,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:15:05,382 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 02:15:05,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:05,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:05,440 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:15:05,440 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 169 treesize of output 131 [2021-08-26 02:15:05,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:05,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:15:05,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:05,460 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-08-26 02:15:05,461 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 128 treesize of output 78 [2021-08-26 02:15:05,474 INFO L354 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2021-08-26 02:15:05,475 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 78 treesize of output 82 [2021-08-26 02:15:05,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:05,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:05,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:05,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:15:05,561 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:15:05,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 83 [2021-08-26 02:15:05,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:05,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:05,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:05,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:05,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:15:05,580 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:15:05,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 77 [2021-08-26 02:15:05,849 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:15:05,898 INFO L354 Elim1Store]: treesize reduction 148, result has 16.4 percent of original size [2021-08-26 02:15:05,898 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 8 case distinctions, treesize of input 323 treesize of output 178 [2021-08-26 02:15:05,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:15:05,948 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-08-26 02:15:05,948 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 8 case distinctions, treesize of input 146 treesize of output 123 [2021-08-26 02:15:05,973 INFO L354 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2021-08-26 02:15:05,973 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 114 treesize of output 108 [2021-08-26 02:15:06,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:06,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:06,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:15:06,119 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-08-26 02:15:06,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 222 treesize of output 127 [2021-08-26 02:15:06,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:06,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:15:06,128 INFO L354 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2021-08-26 02:15:06,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 158 treesize of output 146 [2021-08-26 02:15:06,131 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 131 treesize of output 123 [2021-08-26 02:15:07,594 INFO L354 Elim1Store]: treesize reduction 113, result has 9.6 percent of original size [2021-08-26 02:15:07,595 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 11 new quantified variables, introduced 15 case distinctions, treesize of input 261 treesize of output 123 [2021-08-26 02:15:07,620 INFO L354 Elim1Store]: treesize reduction 114, result has 2.6 percent of original size [2021-08-26 02:15:07,620 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 81 treesize of output 50 [2021-08-26 02:15:07,677 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 27 treesize of output 19 [2021-08-26 02:15:07,684 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:07,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266668388] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:15:07,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:15:07,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 16 [2021-08-26 02:15:07,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256072734] [2021-08-26 02:15:07,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-26 02:15:07,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:07,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-26 02:15:07,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-08-26 02:15:07,687 INFO L87 Difference]: Start difference. First operand 118 states and 123 transitions. Second operand has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 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 02:15:08,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:15:08,225 INFO L93 Difference]: Finished difference Result 132 states and 136 transitions. [2021-08-26 02:15:08,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 02:15:08,226 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 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 48 [2021-08-26 02:15:08,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:15:08,226 INFO L225 Difference]: With dead ends: 132 [2021-08-26 02:15:08,226 INFO L226 Difference]: Without dead ends: 130 [2021-08-26 02:15:08,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 523.7ms TimeCoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2021-08-26 02:15:08,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-08-26 02:15:08,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2021-08-26 02:15:08,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.065040650406504) internal successors, (131), 125 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 02:15:08,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 131 transitions. [2021-08-26 02:15:08,236 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 131 transitions. Word has length 48 [2021-08-26 02:15:08,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:15:08,237 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 131 transitions. [2021-08-26 02:15:08,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 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 02:15:08,237 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 131 transitions. [2021-08-26 02:15:08,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-26 02:15:08,238 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:08,238 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:15:08,266 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 02:15:08,456 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,SelfDestructingSolverStorable22 [2021-08-26 02:15:08,457 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:15:08,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:08,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1164547354, now seen corresponding path program 2 times [2021-08-26 02:15:08,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:08,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662384847] [2021-08-26 02:15:08,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:08,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:08,810 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:08,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:08,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662384847] [2021-08-26 02:15:08,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662384847] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:15:08,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228327433] [2021-08-26 02:15:08,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 02:15:08,811 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:15:08,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:15:08,812 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 02:15:08,812 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 02:15:10,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 02:15:10,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:15:10,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 66 conjunts are in the unsatisfiable core [2021-08-26 02:15:10,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:15:10,618 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 02:15:10,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:10,683 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:15:10,683 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 169 treesize of output 131 [2021-08-26 02:15:10,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:10,699 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-08-26 02:15:10,699 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 71 treesize of output 62 [2021-08-26 02:15:10,712 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:15:10,712 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 62 treesize of output 66 [2021-08-26 02:15:10,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:10,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:10,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-08-26 02:15:10,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:10,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:10,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:10,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-08-26 02:15:11,116 INFO L354 Elim1Store]: treesize reduction 148, result has 16.4 percent of original size [2021-08-26 02:15:11,117 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 8 case distinctions, treesize of input 329 treesize of output 184 [2021-08-26 02:15:11,155 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-08-26 02:15:11,156 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 8 case distinctions, treesize of input 152 treesize of output 129 [2021-08-26 02:15:11,177 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-08-26 02:15:11,177 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 120 treesize of output 127 [2021-08-26 02:15:11,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:11,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:11,382 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:15:11,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 131 treesize of output 110 [2021-08-26 02:15:11,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:11,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:11,402 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-08-26 02:15:11,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 112 treesize of output 108 [2021-08-26 02:15:11,821 INFO L354 Elim1Store]: treesize reduction 260, result has 15.3 percent of original size [2021-08-26 02:15:11,821 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 6 new quantified variables, introduced 17 case distinctions, treesize of input 243 treesize of output 200 [2021-08-26 02:15:11,911 INFO L354 Elim1Store]: treesize reduction 552, result has 12.5 percent of original size [2021-08-26 02:15:11,911 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 17 case distinctions, treesize of input 404 treesize of output 274 [2021-08-26 02:15:11,952 INFO L354 Elim1Store]: treesize reduction 210, result has 29.5 percent of original size [2021-08-26 02:15:11,953 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 259 treesize of output 313 [2021-08-26 02:15:12,356 INFO L354 Elim1Store]: treesize reduction 344, result has 14.0 percent of original size [2021-08-26 02:15:12,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 322 treesize of output 183 [2021-08-26 02:15:12,437 INFO L354 Elim1Store]: treesize reduction 560, result has 14.1 percent of original size [2021-08-26 02:15:12,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 312 treesize of output 320 [2021-08-26 02:15:13,310 INFO L354 Elim1Store]: treesize reduction 569, result has 11.4 percent of original size [2021-08-26 02:15:13,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 30 case distinctions, treesize of input 708 treesize of output 289 [2021-08-26 02:15:13,504 INFO L354 Elim1Store]: treesize reduction 1513, result has 7.6 percent of original size [2021-08-26 02:15:13,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 30 case distinctions, treesize of input 699 treesize of output 535 [2021-08-26 02:15:13,535 INFO L354 Elim1Store]: treesize reduction 136, result has 43.6 percent of original size [2021-08-26 02:15:13,536 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 514 treesize of output 568 [2021-08-26 02:15:16,256 INFO L354 Elim1Store]: treesize reduction 528, result has 11.7 percent of original size [2021-08-26 02:15:16,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 45 case distinctions, treesize of input 596 treesize of output 249 [2021-08-26 02:15:16,422 INFO L354 Elim1Store]: treesize reduction 1488, result has 9.2 percent of original size [2021-08-26 02:15:16,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 538 treesize of output 504 [2021-08-26 02:15:47,045 INFO L354 Elim1Store]: treesize reduction 470, result has 6.9 percent of original size [2021-08-26 02:15:47,045 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 503 treesize of output 207 [2021-08-26 02:15:47,109 INFO L354 Elim1Store]: treesize reduction 237, result has 3.3 percent of original size [2021-08-26 02:15:47,109 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 9 new quantified variables, introduced 36 case distinctions, treesize of input 163 treesize of output 135 [2021-08-26 02:15:47,163 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:47,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228327433] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:15:47,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:15:47,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-26 02:15:47,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173113457] [2021-08-26 02:15:47,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-26 02:15:47,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:15:47,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-26 02:15:47,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=358, Unknown=2, NotChecked=0, Total=420 [2021-08-26 02:15:47,165 INFO L87 Difference]: Start difference. First operand 126 states and 131 transitions. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 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 02:15:55,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:15:55,867 INFO L93 Difference]: Finished difference Result 183 states and 191 transitions. [2021-08-26 02:15:55,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-26 02:15:55,868 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 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) Word has length 53 [2021-08-26 02:15:55,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:15:55,868 INFO L225 Difference]: With dead ends: 183 [2021-08-26 02:15:55,868 INFO L226 Difference]: Without dead ends: 181 [2021-08-26 02:15:55,869 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 4027.5ms TimeCoverageRelationStatistics Valid=118, Invalid=691, Unknown=3, NotChecked=0, Total=812 [2021-08-26 02:15:55,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-08-26 02:15:55,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 124. [2021-08-26 02:15:55,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 122 states have (on average 1.0573770491803278) internal successors, (129), 123 states have internal predecessors, (129), 0 states have call successors, (0), 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 02:15:55,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 129 transitions. [2021-08-26 02:15:55,878 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 129 transitions. Word has length 53 [2021-08-26 02:15:55,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:15:55,878 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 129 transitions. [2021-08-26 02:15:55,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 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 02:15:55,878 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 129 transitions. [2021-08-26 02:15:55,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-26 02:15:55,879 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:15:55,879 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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 02:15:55,905 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 02:15:56,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-08-26 02:15:56,085 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:15:56,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:15:56,085 INFO L82 PathProgramCache]: Analyzing trace with hash 53222075, now seen corresponding path program 1 times [2021-08-26 02:15:56,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:15:56,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256444717] [2021-08-26 02:15:56,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:56,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:15:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:56,477 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:15:56,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:15:56,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256444717] [2021-08-26 02:15:56,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256444717] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:15:56,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039374580] [2021-08-26 02:15:56,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:15:56,478 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:15:56,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:15:56,481 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 02:15:56,482 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 02:15:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:15:58,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 55 conjunts are in the unsatisfiable core [2021-08-26 02:15:58,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:15:58,644 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 02:15:58,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:58,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:15:58,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:58,703 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:15:58,703 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 169 treesize of output 131 [2021-08-26 02:15:58,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:58,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:58,720 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:15:58,721 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 103 treesize of output 65 [2021-08-26 02:15:58,734 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:15:58,734 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 62 treesize of output 66 [2021-08-26 02:15:58,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:58,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:58,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-08-26 02:15:58,828 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 13 treesize of output 9 [2021-08-26 02:15:58,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:58,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:58,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-08-26 02:15:59,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:15:59,199 INFO L354 Elim1Store]: treesize reduction 144, result has 18.6 percent of original size [2021-08-26 02:15:59,199 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 8 case distinctions, treesize of input 346 treesize of output 209 [2021-08-26 02:15:59,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:15:59,249 INFO L354 Elim1Store]: treesize reduction 240, result has 15.8 percent of original size [2021-08-26 02:15:59,249 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 8 case distinctions, treesize of input 346 treesize of output 254 [2021-08-26 02:15:59,282 INFO L354 Elim1Store]: treesize reduction 92, result has 31.9 percent of original size [2021-08-26 02:15:59,282 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 245 treesize of output 268 [2021-08-26 02:15:59,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 264 treesize of output 207 [2021-08-26 02:15:59,301 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-08-26 02:15:59,302 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 193 treesize of output 181 [2021-08-26 02:15:59,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:59,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:15:59,544 INFO L354 Elim1Store]: treesize reduction 220, result has 16.0 percent of original size [2021-08-26 02:15:59,544 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 15 case distinctions, treesize of input 216 treesize of output 156 [2021-08-26 02:15:59,562 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-08-26 02:15:59,562 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 206 treesize of output 205 [2021-08-26 02:15:59,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:15:59,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:15:59,614 INFO L354 Elim1Store]: treesize reduction 300, result has 16.2 percent of original size [2021-08-26 02:15:59,614 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 15 case distinctions, treesize of input 202 treesize of output 204 [2021-08-26 02:16:00,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:00,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:16:00,427 INFO L354 Elim1Store]: treesize reduction 380, result has 13.4 percent of original size [2021-08-26 02:16:00,427 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 17 case distinctions, treesize of input 587 treesize of output 303 [2021-08-26 02:16:00,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:00,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:16:00,562 INFO L354 Elim1Store]: treesize reduction 832, result has 9.1 percent of original size [2021-08-26 02:16:00,563 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 17 case distinctions, treesize of input 618 treesize of output 492 [2021-08-26 02:16:00,619 INFO L354 Elim1Store]: treesize reduction 318, result has 12.2 percent of original size [2021-08-26 02:16:00,619 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 486 treesize of output 408 [2021-08-26 02:16:00,645 INFO L354 Elim1Store]: treesize reduction 60, result has 50.4 percent of original size [2021-08-26 02:16:00,646 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 387 treesize of output 415 [2021-08-26 02:16:00,670 INFO L354 Elim1Store]: treesize reduction 124, result has 19.0 percent of original size [2021-08-26 02:16:00,670 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 403 treesize of output 394 [2021-08-26 02:16:03,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:03,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:16:03,510 INFO L354 Elim1Store]: treesize reduction 372, result has 13.1 percent of original size [2021-08-26 02:16:03,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 460 treesize of output 232 [2021-08-26 02:16:03,532 INFO L354 Elim1Store]: treesize reduction 172, result has 14.4 percent of original size [2021-08-26 02:16:03,533 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 414 treesize of output 404 [2021-08-26 02:16:03,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:03,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:16:03,623 INFO L354 Elim1Store]: treesize reduction 860, result has 10.8 percent of original size [2021-08-26 02:16:03,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 398 treesize of output 370 [2021-08-26 02:16:39,642 INFO L354 Elim1Store]: treesize reduction 176, result has 10.7 percent of original size [2021-08-26 02:16:39,643 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 10 new quantified variables, introduced 21 case distinctions, treesize of input 364 treesize of output 185 [2021-08-26 02:16:39,709 INFO L354 Elim1Store]: treesize reduction 189, result has 4.1 percent of original size [2021-08-26 02:16:39,710 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 176 treesize of output 143 [2021-08-26 02:16:40,038 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-08-26 02:16:40,039 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 57 treesize of output 37 [2021-08-26 02:16:40,049 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:16:40,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039374580] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:16:40,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:16:40,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-08-26 02:16:40,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240644563] [2021-08-26 02:16:40,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-26 02:16:40,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:16:40,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-26 02:16:40,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-08-26 02:16:40,050 INFO L87 Difference]: Start difference. First operand 124 states and 129 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 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 02:16:41,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:16:41,547 INFO L93 Difference]: Finished difference Result 157 states and 166 transitions. [2021-08-26 02:16:41,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-26 02:16:41,547 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 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) Word has length 55 [2021-08-26 02:16:41,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:16:41,548 INFO L225 Difference]: With dead ends: 157 [2021-08-26 02:16:41,548 INFO L226 Difference]: Without dead ends: 155 [2021-08-26 02:16:41,548 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1128.3ms TimeCoverageRelationStatistics Valid=149, Invalid=843, Unknown=0, NotChecked=0, Total=992 [2021-08-26 02:16:41,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-08-26 02:16:41,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 129. [2021-08-26 02:16:41,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 127 states have (on average 1.062992125984252) internal successors, (135), 128 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 02:16:41,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2021-08-26 02:16:41,562 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 55 [2021-08-26 02:16:41,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:16:41,562 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 135 transitions. [2021-08-26 02:16:41,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 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 02:16:41,562 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 135 transitions. [2021-08-26 02:16:41,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-26 02:16:41,563 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:16:41,563 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2021-08-26 02:16:41,588 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 02:16:41,763 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,SelfDestructingSolverStorable24 [2021-08-26 02:16:41,764 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:16:41,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:16:41,764 INFO L82 PathProgramCache]: Analyzing trace with hash 412502626, now seen corresponding path program 2 times [2021-08-26 02:16:41,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:16:41,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467047058] [2021-08-26 02:16:41,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:16:41,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:16:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:16:42,050 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:16:42,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:16:42,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467047058] [2021-08-26 02:16:42,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467047058] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:16:42,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885768060] [2021-08-26 02:16:42,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 02:16:42,051 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:16:42,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:16:42,052 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 02:16:42,053 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 02:16:44,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 02:16:44,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:16:44,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 46 conjunts are in the unsatisfiable core [2021-08-26 02:16:44,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:16:44,879 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 02:16:44,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:44,948 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:16:44,948 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 169 treesize of output 131 [2021-08-26 02:16:44,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:44,967 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:16:44,968 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 103 treesize of output 65 [2021-08-26 02:16:44,983 INFO L354 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2021-08-26 02:16:44,983 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 78 treesize of output 82 [2021-08-26 02:16:45,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:45,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:45,064 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:16:45,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 83 [2021-08-26 02:16:45,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:45,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:45,072 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:16:45,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 77 [2021-08-26 02:16:45,382 INFO L354 Elim1Store]: treesize reduction 148, result has 16.4 percent of original size [2021-08-26 02:16:45,383 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 8 case distinctions, treesize of input 323 treesize of output 178 [2021-08-26 02:16:45,432 INFO L354 Elim1Store]: treesize reduction 240, result has 15.8 percent of original size [2021-08-26 02:16:45,433 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 8 case distinctions, treesize of input 239 treesize of output 147 [2021-08-26 02:16:45,442 INFO L354 Elim1Store]: treesize reduction 37, result has 24.5 percent of original size [2021-08-26 02:16:45,443 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 138 treesize of output 132 [2021-08-26 02:16:45,580 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-08-26 02:16:45,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 195 treesize of output 116 [2021-08-26 02:16:45,587 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-08-26 02:16:45,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 103 treesize of output 103 [2021-08-26 02:16:47,312 INFO L354 Elim1Store]: treesize reduction 182, result has 7.6 percent of original size [2021-08-26 02:16:47,313 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 14 new quantified variables, introduced 21 case distinctions, treesize of input 307 treesize of output 134 [2021-08-26 02:16:47,349 INFO L354 Elim1Store]: treesize reduction 174, result has 3.9 percent of original size [2021-08-26 02:16:47,349 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 10 new quantified variables, introduced 21 case distinctions, treesize of input 74 treesize of output 49 [2021-08-26 02:16:47,370 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:16:47,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885768060] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:16:47,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:16:47,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 19 [2021-08-26 02:16:47,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250506578] [2021-08-26 02:16:47,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-26 02:16:47,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:16:47,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-26 02:16:47,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-08-26 02:16:47,371 INFO L87 Difference]: Start difference. First operand 129 states and 135 transitions. Second operand has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 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 02:16:52,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:16:52,130 INFO L93 Difference]: Finished difference Result 135 states and 140 transitions. [2021-08-26 02:16:52,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 02:16:52,131 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 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 02:16:52,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:16:52,131 INFO L225 Difference]: With dead ends: 135 [2021-08-26 02:16:52,131 INFO L226 Difference]: Without dead ends: 93 [2021-08-26 02:16:52,132 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 561.5ms TimeCoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2021-08-26 02:16:52,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-08-26 02:16:52,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-08-26 02:16:52,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 91 states have (on average 1.065934065934066) internal successors, (97), 92 states have internal predecessors, (97), 0 states have call successors, (0), 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 02:16:52,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2021-08-26 02:16:52,140 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 56 [2021-08-26 02:16:52,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:16:52,140 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2021-08-26 02:16:52,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 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 02:16:52,141 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2021-08-26 02:16:52,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-26 02:16:52,141 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:16:52,141 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 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] [2021-08-26 02:16:52,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-26 02:16:52,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:16:52,361 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:16:52,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:16:52,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1719756958, now seen corresponding path program 2 times [2021-08-26 02:16:52,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:16:52,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314574690] [2021-08-26 02:16:52,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:16:52,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:16:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:16:52,949 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:16:52,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:16:52,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314574690] [2021-08-26 02:16:52,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314574690] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:16:52,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536198612] [2021-08-26 02:16:52,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 02:16:52,949 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:16:52,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:16:52,951 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 02:16:52,952 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 02:16:56,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 02:16:56,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:16:56,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 84 conjunts are in the unsatisfiable core [2021-08-26 02:16:56,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:16:56,085 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 02:16:56,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:56,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:56,143 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:16:56,144 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 169 treesize of output 131 [2021-08-26 02:16:56,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:56,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:16:56,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:56,163 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-08-26 02:16:56,164 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 71 treesize of output 62 [2021-08-26 02:16:56,177 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:16:56,177 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 62 treesize of output 66 [2021-08-26 02:16:56,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:56,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:56,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-08-26 02:16:56,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:56,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:56,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-08-26 02:16:56,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:16:56,654 INFO L354 Elim1Store]: treesize reduction 148, result has 16.4 percent of original size [2021-08-26 02:16:56,654 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 8 case distinctions, treesize of input 329 treesize of output 184 [2021-08-26 02:16:56,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:16:56,699 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-08-26 02:16:56,699 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 8 case distinctions, treesize of input 152 treesize of output 129 [2021-08-26 02:16:56,724 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-08-26 02:16:56,724 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 120 treesize of output 127 [2021-08-26 02:16:56,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:56,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:56,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:16:56,981 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:16:56,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 131 treesize of output 110 [2021-08-26 02:16:56,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:56,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:56,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:56,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:16:56,993 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-08-26 02:16:56,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 112 treesize of output 108 [2021-08-26 02:16:57,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:16:57,492 INFO L354 Elim1Store]: treesize reduction 264, result has 14.0 percent of original size [2021-08-26 02:16:57,493 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 17 case distinctions, treesize of input 491 treesize of output 223 [2021-08-26 02:16:57,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:16:57,572 INFO L354 Elim1Store]: treesize reduction 392, result has 13.1 percent of original size [2021-08-26 02:16:57,573 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 17 case distinctions, treesize of input 202 treesize of output 185 [2021-08-26 02:16:57,606 INFO L354 Elim1Store]: treesize reduction 134, result has 17.3 percent of original size [2021-08-26 02:16:57,607 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 170 treesize of output 180 [2021-08-26 02:16:57,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:57,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:57,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:57,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:16:57,949 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-08-26 02:16:57,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 189 treesize of output 153 [2021-08-26 02:16:57,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:57,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:57,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:57,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:16:57,963 INFO L354 Elim1Store]: treesize reduction 104, result has 1.0 percent of original size [2021-08-26 02:16:57,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 170 treesize of output 172 [2021-08-26 02:16:58,010 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 13 treesize of output 9 [2021-08-26 02:16:58,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:16:58,926 INFO L354 Elim1Store]: treesize reduction 396, result has 12.6 percent of original size [2021-08-26 02:16:58,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 30 case distinctions, treesize of input 374 treesize of output 312 [2021-08-26 02:16:58,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:16:59,079 INFO L354 Elim1Store]: treesize reduction 700, result has 11.3 percent of original size [2021-08-26 02:16:59,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 30 case distinctions, treesize of input 346 treesize of output 335 [2021-08-26 02:16:59,101 INFO L354 Elim1Store]: treesize reduction 141, result has 2.8 percent of original size [2021-08-26 02:16:59,102 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 314 treesize of output 292 [2021-08-26 02:16:59,149 INFO L354 Elim1Store]: treesize reduction 100, result has 23.1 percent of original size [2021-08-26 02:16:59,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 270 treesize of output 241 [2021-08-26 02:16:59,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:59,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:59,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:16:59,556 INFO L354 Elim1Store]: treesize reduction 128, result has 0.8 percent of original size [2021-08-26 02:16:59,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 36 case distinctions, treesize of input 246 treesize of output 195 [2021-08-26 02:16:59,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:59,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:16:59,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:16:59,575 INFO L354 Elim1Store]: treesize reduction 268, result has 0.4 percent of original size [2021-08-26 02:16:59,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 267 treesize of output 267 [2021-08-26 02:16:59,587 INFO L354 Elim1Store]: treesize reduction 49, result has 23.4 percent of original size [2021-08-26 02:16:59,587 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 240 treesize of output 235 [2021-08-26 02:17:03,956 INFO L354 Elim1Store]: treesize reduction 410, result has 9.5 percent of original size [2021-08-26 02:17:03,956 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 16 new quantified variables, introduced 55 case distinctions, treesize of input 303 treesize of output 196 [2021-08-26 02:17:04,056 INFO L354 Elim1Store]: treesize reduction 398, result has 1.7 percent of original size [2021-08-26 02:17:04,056 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 14 new quantified variables, introduced 55 case distinctions, treesize of input 158 treesize of output 113 [2021-08-26 02:17:04,064 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:17:04,065 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 26 treesize of output 14 [2021-08-26 02:17:04,071 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:17:04,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536198612] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:17:04,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:17:04,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 22 [2021-08-26 02:17:04,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959908390] [2021-08-26 02:17:04,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-26 02:17:04,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:17:04,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-26 02:17:04,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=394, Unknown=1, NotChecked=0, Total=462 [2021-08-26 02:17:04,072 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 22 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 02:17:11,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:17:11,497 INFO L93 Difference]: Finished difference Result 161 states and 170 transitions. [2021-08-26 02:17:11,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-26 02:17:11,504 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 22 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 56 [2021-08-26 02:17:11,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:17:11,505 INFO L225 Difference]: With dead ends: 161 [2021-08-26 02:17:11,505 INFO L226 Difference]: Without dead ends: 159 [2021-08-26 02:17:11,505 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 7318.2ms TimeCoverageRelationStatistics Valid=123, Invalid=746, Unknown=1, NotChecked=0, Total=870 [2021-08-26 02:17:11,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-08-26 02:17:11,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 102. [2021-08-26 02:17:11,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 100 states have (on average 1.07) internal successors, (107), 101 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 02:17:11,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 107 transitions. [2021-08-26 02:17:11,513 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 107 transitions. Word has length 56 [2021-08-26 02:17:11,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:17:11,513 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 107 transitions. [2021-08-26 02:17:11,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 22 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 02:17:11,514 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 107 transitions. [2021-08-26 02:17:11,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-08-26 02:17:11,526 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:17:11,526 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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, 1] [2021-08-26 02:17:11,555 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 02:17:11,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-08-26 02:17:11,744 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:17:11,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:17:11,745 INFO L82 PathProgramCache]: Analyzing trace with hash 906735365, now seen corresponding path program 1 times [2021-08-26 02:17:11,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:17:11,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233638845] [2021-08-26 02:17:11,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:17:11,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:17:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:17:11,779 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-26 02:17:11,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:17:11,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233638845] [2021-08-26 02:17:11,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233638845] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:17:11,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:17:11,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 02:17:11,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550445298] [2021-08-26 02:17:11,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:17:11,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:17:11,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:17:11,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:17:11,797 INFO L87 Difference]: Start difference. First operand 102 states and 107 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 02:17:11,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:17:11,834 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2021-08-26 02:17:11,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 02:17:11,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 63 [2021-08-26 02:17:11,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:17:11,835 INFO L225 Difference]: With dead ends: 113 [2021-08-26 02:17:11,835 INFO L226 Difference]: Without dead ends: 102 [2021-08-26 02:17:11,835 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:17:11,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-08-26 02:17:11,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-08-26 02:17:11,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 100 states have (on average 1.05) internal successors, (105), 101 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 02:17:11,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 105 transitions. [2021-08-26 02:17:11,845 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 105 transitions. Word has length 63 [2021-08-26 02:17:11,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:17:11,845 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 105 transitions. [2021-08-26 02:17:11,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 02:17:11,846 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 105 transitions. [2021-08-26 02:17:11,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-08-26 02:17:11,846 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:17:11,846 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2021-08-26 02:17:11,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-26 02:17:11,847 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:17:11,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:17:11,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1607799943, now seen corresponding path program 1 times [2021-08-26 02:17:11,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:17:11,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600879380] [2021-08-26 02:17:11,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:17:11,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:17:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:17:12,365 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:17:12,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:17:12,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600879380] [2021-08-26 02:17:12,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600879380] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:17:12,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649051450] [2021-08-26 02:17:12,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:17:12,366 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:17:12,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:17:12,369 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 02:17:12,369 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 02:17:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:17:15,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 65 conjunts are in the unsatisfiable core [2021-08-26 02:17:15,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:17:15,564 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 02:17:15,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:15,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:15,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:15,621 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:17:15,621 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 169 treesize of output 131 [2021-08-26 02:17:15,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:15,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:15,638 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:17:15,638 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 103 treesize of output 65 [2021-08-26 02:17:15,650 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:17:15,651 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 62 treesize of output 66 [2021-08-26 02:17:15,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:15,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:15,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-08-26 02:17:15,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:15,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:15,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-08-26 02:17:15,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:16,042 INFO L354 Elim1Store]: treesize reduction 148, result has 16.4 percent of original size [2021-08-26 02:17:16,043 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 8 case distinctions, treesize of input 329 treesize of output 184 [2021-08-26 02:17:16,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:16,088 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-08-26 02:17:16,089 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 8 case distinctions, treesize of input 152 treesize of output 129 [2021-08-26 02:17:16,111 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-08-26 02:17:16,111 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 120 treesize of output 127 [2021-08-26 02:17:16,264 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 13 treesize of output 9 [2021-08-26 02:17:16,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:16,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:16,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:16,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:16,275 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:17:16,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 131 treesize of output 110 [2021-08-26 02:17:16,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:16,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:16,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:16,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:16,286 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-08-26 02:17:16,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 112 treesize of output 108 [2021-08-26 02:17:16,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:16,861 INFO L354 Elim1Store]: treesize reduction 260, result has 15.3 percent of original size [2021-08-26 02:17:16,861 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 17 case distinctions, treesize of input 498 treesize of output 242 [2021-08-26 02:17:16,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:16,957 INFO L354 Elim1Store]: treesize reduction 552, result has 12.5 percent of original size [2021-08-26 02:17:16,957 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 17 case distinctions, treesize of input 490 treesize of output 360 [2021-08-26 02:17:16,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 354 treesize of output 273 [2021-08-26 02:17:16,984 INFO L354 Elim1Store]: treesize reduction 60, result has 50.4 percent of original size [2021-08-26 02:17:16,984 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 255 treesize of output 283 [2021-08-26 02:17:16,995 INFO L354 Elim1Store]: treesize reduction 53, result has 22.1 percent of original size [2021-08-26 02:17:16,995 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 271 treesize of output 259 [2021-08-26 02:17:17,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:17,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:17,363 INFO L354 Elim1Store]: treesize reduction 332, result has 14.4 percent of original size [2021-08-26 02:17:17,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 400 treesize of output 196 [2021-08-26 02:17:17,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:17,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:17,442 INFO L354 Elim1Store]: treesize reduction 788, result has 11.7 percent of original size [2021-08-26 02:17:17,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 354 treesize of output 326 [2021-08-26 02:17:17,453 INFO L354 Elim1Store]: treesize reduction 77, result has 16.3 percent of original size [2021-08-26 02:17:17,453 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 305 treesize of output 292 [2021-08-26 02:17:32,635 INFO L354 Elim1Store]: treesize reduction 241, result has 9.1 percent of original size [2021-08-26 02:17:32,635 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 321 treesize of output 157 [2021-08-26 02:17:32,679 INFO L354 Elim1Store]: treesize reduction 234, result has 1.3 percent of original size [2021-08-26 02:17:32,679 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 10 new quantified variables, introduced 28 case distinctions, treesize of input 142 treesize of output 103 [2021-08-26 02:17:32,794 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-08-26 02:17:32,794 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 40 treesize of output 26 [2021-08-26 02:17:32,802 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:17:32,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649051450] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:17:32,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:17:32,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 20 [2021-08-26 02:17:32,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343477418] [2021-08-26 02:17:32,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-26 02:17:32,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:17:32,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-26 02:17:32,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-08-26 02:17:32,803 INFO L87 Difference]: Start difference. First operand 102 states and 105 transitions. Second operand has 20 states, 20 states have (on average 6.05) internal successors, (121), 20 states have internal predecessors, (121), 0 states have call successors, (0), 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 02:17:33,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:17:33,868 INFO L93 Difference]: Finished difference Result 150 states and 153 transitions. [2021-08-26 02:17:33,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 02:17:33,869 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.05) internal successors, (121), 20 states have internal predecessors, (121), 0 states have call successors, (0), 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 63 [2021-08-26 02:17:33,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:17:33,870 INFO L225 Difference]: With dead ends: 150 [2021-08-26 02:17:33,870 INFO L226 Difference]: Without dead ends: 148 [2021-08-26 02:17:33,870 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 994.8ms TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2021-08-26 02:17:33,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-08-26 02:17:33,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 130. [2021-08-26 02:17:33,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 128 states have (on average 1.0390625) internal successors, (133), 129 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 02:17:33,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 133 transitions. [2021-08-26 02:17:33,883 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 133 transitions. Word has length 63 [2021-08-26 02:17:33,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:17:33,883 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 133 transitions. [2021-08-26 02:17:33,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.05) internal successors, (121), 20 states have internal predecessors, (121), 0 states have call successors, (0), 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 02:17:33,883 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 133 transitions. [2021-08-26 02:17:33,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-08-26 02:17:33,884 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:17:33,884 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 3, 3, 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 02:17:33,910 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 02:17:34,084 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,SelfDestructingSolverStorable28 [2021-08-26 02:17:34,085 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:17:34,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:17:34,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1943137371, now seen corresponding path program 3 times [2021-08-26 02:17:34,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:17:34,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050618011] [2021-08-26 02:17:34,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:17:34,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:17:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:17:34,790 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:17:34,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:17:34,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050618011] [2021-08-26 02:17:34,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050618011] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:17:34,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877589552] [2021-08-26 02:17:34,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 02:17:34,790 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:17:34,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:17:34,791 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 02:17:34,792 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 02:17:41,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-08-26 02:17:41,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:17:41,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 112 conjunts are in the unsatisfiable core [2021-08-26 02:17:41,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:17:41,907 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 02:17:41,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:41,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:41,973 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:17:41,973 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 169 treesize of output 131 [2021-08-26 02:17:41,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:41,977 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:41,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:41,992 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-08-26 02:17:41,993 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 71 treesize of output 62 [2021-08-26 02:17:42,005 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:17:42,006 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 62 treesize of output 66 [2021-08-26 02:17:42,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:42,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:42,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-08-26 02:17:42,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:42,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:42,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-08-26 02:17:42,449 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:42,503 INFO L354 Elim1Store]: treesize reduction 148, result has 16.4 percent of original size [2021-08-26 02:17:42,504 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 8 case distinctions, treesize of input 329 treesize of output 184 [2021-08-26 02:17:42,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:42,555 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-08-26 02:17:42,555 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 8 case distinctions, treesize of input 152 treesize of output 129 [2021-08-26 02:17:42,575 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-08-26 02:17:42,576 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 120 treesize of output 127 [2021-08-26 02:17:42,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:42,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:42,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:42,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:42,826 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:17:42,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 131 treesize of output 110 [2021-08-26 02:17:42,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:42,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:42,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:42,836 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-08-26 02:17:42,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 112 treesize of output 108 [2021-08-26 02:17:43,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:43,395 INFO L354 Elim1Store]: treesize reduction 332, result has 13.3 percent of original size [2021-08-26 02:17:43,396 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 17 case distinctions, treesize of input 270 treesize of output 240 [2021-08-26 02:17:43,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:43,472 INFO L354 Elim1Store]: treesize reduction 264, result has 14.0 percent of original size [2021-08-26 02:17:43,472 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 6 new quantified variables, introduced 17 case distinctions, treesize of input 197 treesize of output 150 [2021-08-26 02:17:43,506 INFO L354 Elim1Store]: treesize reduction 158, result has 16.8 percent of original size [2021-08-26 02:17:43,507 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 194 treesize of output 204 [2021-08-26 02:17:43,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:43,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:43,843 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:43,850 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-08-26 02:17:43,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 213 treesize of output 153 [2021-08-26 02:17:43,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:43,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:43,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:43,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:43,863 INFO L354 Elim1Store]: treesize reduction 124, result has 0.8 percent of original size [2021-08-26 02:17:43,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 194 treesize of output 196 [2021-08-26 02:17:43,901 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 13 treesize of output 9 [2021-08-26 02:17:44,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:44,833 INFO L354 Elim1Store]: treesize reduction 396, result has 12.6 percent of original size [2021-08-26 02:17:44,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 30 case distinctions, treesize of input 785 treesize of output 318 [2021-08-26 02:17:44,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:44,983 INFO L354 Elim1Store]: treesize reduction 700, result has 11.3 percent of original size [2021-08-26 02:17:44,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 30 case distinctions, treesize of input 352 treesize of output 341 [2021-08-26 02:17:44,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 325 treesize of output 292 [2021-08-26 02:17:45,045 INFO L354 Elim1Store]: treesize reduction 244, result has 14.4 percent of original size [2021-08-26 02:17:45,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 278 treesize of output 291 [2021-08-26 02:17:45,059 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-08-26 02:17:45,059 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 276 treesize of output 264 [2021-08-26 02:17:45,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:45,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:45,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:45,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:45,578 INFO L354 Elim1Store]: treesize reduction 232, result has 0.4 percent of original size [2021-08-26 02:17:45,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 4 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 33 case distinctions, treesize of input 283 treesize of output 291 [2021-08-26 02:17:45,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:45,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:45,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:45,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:45,600 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-08-26 02:17:45,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 4 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 33 case distinctions, treesize of input 264 treesize of output 193 [2021-08-26 02:17:45,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:45,614 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-08-26 02:17:45,615 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 245 treesize of output 244 [2021-08-26 02:17:46,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:46,979 INFO L354 Elim1Store]: treesize reduction 544, result has 11.5 percent of original size [2021-08-26 02:17:46,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 47 case distinctions, treesize of input 455 treesize of output 358 [2021-08-26 02:17:46,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:47,211 INFO L354 Elim1Store]: treesize reduction 1392, result has 9.8 percent of original size [2021-08-26 02:17:47,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 47 case distinctions, treesize of input 511 treesize of output 506 [2021-08-26 02:17:47,269 INFO L354 Elim1Store]: treesize reduction 172, result has 20.7 percent of original size [2021-08-26 02:17:47,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 472 treesize of output 446 [2021-08-26 02:17:47,295 INFO L354 Elim1Store]: treesize reduction 317, result has 1.2 percent of original size [2021-08-26 02:17:47,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 422 treesize of output 374 [2021-08-26 02:17:47,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:47,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:47,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:47,784 INFO L354 Elim1Store]: treesize reduction 200, result has 0.5 percent of original size [2021-08-26 02:17:47,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 3 disjoint index pairs (out of 55 index pairs), introduced 15 new quantified variables, introduced 55 case distinctions, treesize of input 394 treesize of output 240 [2021-08-26 02:17:47,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:47,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:17:47,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:17:47,820 INFO L354 Elim1Store]: treesize reduction 560, result has 0.2 percent of original size [2021-08-26 02:17:47,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 3 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 379 treesize of output 397 [2021-08-26 02:17:47,843 INFO L354 Elim1Store]: treesize reduction 88, result has 23.5 percent of original size [2021-08-26 02:17:47,844 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 364 treesize of output 366 [2021-08-26 02:17:53,659 INFO L354 Elim1Store]: treesize reduction 494, result has 11.3 percent of original size [2021-08-26 02:17:53,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 1 disjoint index pairs (out of 78 index pairs), introduced 23 new quantified variables, introduced 78 case distinctions, treesize of input 977 treesize of output 281 [2021-08-26 02:17:53,815 INFO L354 Elim1Store]: treesize reduction 534, result has 1.3 percent of original size [2021-08-26 02:17:53,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 1 disjoint index pairs (out of 78 index pairs), introduced 16 new quantified variables, introduced 78 case distinctions, treesize of input 203 treesize of output 150 [2021-08-26 02:17:53,826 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:17:53,826 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 41 treesize of output 25 [2021-08-26 02:17:53,832 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:17:53,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877589552] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:17:53,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:17:53,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18] total 27 [2021-08-26 02:17:53,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768881860] [2021-08-26 02:17:53,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-26 02:17:53,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:17:53,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-26 02:17:53,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=609, Unknown=1, NotChecked=0, Total=702 [2021-08-26 02:17:53,834 INFO L87 Difference]: Start difference. First operand 130 states and 133 transitions. Second operand has 27 states, 27 states have (on average 4.62962962962963) internal successors, (125), 27 states have internal predecessors, (125), 0 states have call successors, (0), 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 02:18:25,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:18:25,888 INFO L93 Difference]: Finished difference Result 185 states and 190 transitions. [2021-08-26 02:18:25,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-26 02:18:25,888 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.62962962962963) internal successors, (125), 27 states have internal predecessors, (125), 0 states have call successors, (0), 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 65 [2021-08-26 02:18:25,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:18:25,889 INFO L225 Difference]: With dead ends: 185 [2021-08-26 02:18:25,889 INFO L226 Difference]: Without dead ends: 183 [2021-08-26 02:18:25,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 17750.9ms TimeCoverageRelationStatistics Valid=204, Invalid=1353, Unknown=3, NotChecked=0, Total=1560 [2021-08-26 02:18:25,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-08-26 02:18:25,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 101. [2021-08-26 02:18:25,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.03) internal successors, (103), 100 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 02:18:25,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2021-08-26 02:18:25,903 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 65 [2021-08-26 02:18:25,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:18:25,903 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2021-08-26 02:18:25,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.62962962962963) internal successors, (125), 27 states have internal predecessors, (125), 0 states have call successors, (0), 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 02:18:25,903 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2021-08-26 02:18:25,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-08-26 02:18:25,904 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:18:25,904 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 02:18:25,947 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 02:18:26,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:18:26,117 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:18:26,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:18:26,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1258127955, now seen corresponding path program 2 times [2021-08-26 02:18:26,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:18:26,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28927685] [2021-08-26 02:18:26,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:18:26,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:18:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:18:26,640 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:18:26,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:18:26,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28927685] [2021-08-26 02:18:26,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28927685] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:18:26,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779329810] [2021-08-26 02:18:26,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 02:18:26,641 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:18:26,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:18:26,642 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 02:18:26,642 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 02:18:31,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 02:18:31,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:18:31,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 33 conjunts are in the unsatisfiable core [2021-08-26 02:18:31,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:18:34,895 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 02:18:34,895 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 6 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 101 [2021-08-26 02:18:34,912 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 02:18:34,912 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 91 [2021-08-26 02:18:34,979 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 31 treesize of output 19 [2021-08-26 02:18:34,987 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-08-26 02:18:34,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779329810] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:18:34,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:18:34,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 19 [2021-08-26 02:18:34,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303663166] [2021-08-26 02:18:34,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-26 02:18:34,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:18:34,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-26 02:18:34,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=299, Unknown=2, NotChecked=0, Total=342 [2021-08-26 02:18:34,990 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand has 19 states, 19 states have (on average 6.578947368421052) internal successors, (125), 19 states have internal predecessors, (125), 0 states have call successors, (0), 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 02:19:12,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:19:12,108 INFO L93 Difference]: Finished difference Result 149 states and 152 transitions. [2021-08-26 02:19:12,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-26 02:19:12,108 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.578947368421052) internal successors, (125), 19 states have internal predecessors, (125), 0 states have call successors, (0), 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 71 [2021-08-26 02:19:12,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:19:12,109 INFO L225 Difference]: With dead ends: 149 [2021-08-26 02:19:12,109 INFO L226 Difference]: Without dead ends: 147 [2021-08-26 02:19:12,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 7844.2ms TimeCoverageRelationStatistics Valid=138, Invalid=980, Unknown=4, NotChecked=0, Total=1122 [2021-08-26 02:19:12,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-08-26 02:19:12,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 123. [2021-08-26 02:19:12,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.0327868852459017) internal successors, (126), 122 states have internal predecessors, (126), 0 states have call successors, (0), 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 02:19:12,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 126 transitions. [2021-08-26 02:19:12,126 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 126 transitions. Word has length 71 [2021-08-26 02:19:12,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:19:12,126 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 126 transitions. [2021-08-26 02:19:12,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.578947368421052) internal successors, (125), 19 states have internal predecessors, (125), 0 states have call successors, (0), 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 02:19:12,126 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 126 transitions. [2021-08-26 02:19:12,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-08-26 02:19:12,127 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:19:12,127 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 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 02:19:12,156 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 02:19:12,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:19:12,337 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:19:12,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:19:12,337 INFO L82 PathProgramCache]: Analyzing trace with hash 13255584, now seen corresponding path program 3 times [2021-08-26 02:19:12,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:19:12,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587664632] [2021-08-26 02:19:12,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:12,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:19:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:12,921 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:19:12,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:19:12,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587664632] [2021-08-26 02:19:12,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587664632] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:12,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308334940] [2021-08-26 02:19:12,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 02:19:12,922 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:19:12,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:19:12,922 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 02:19:12,925 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 02:19:18,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-08-26 02:19:18,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:19:18,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 96 conjunts are in the unsatisfiable core [2021-08-26 02:19:18,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:19:18,030 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 02:19:18,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:18,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:18,090 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:19:18,091 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 173 treesize of output 135 [2021-08-26 02:19:18,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:18,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:19:18,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:18,111 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-08-26 02:19:18,111 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 136 treesize of output 86 [2021-08-26 02:19:18,121 INFO L354 Elim1Store]: treesize reduction 35, result has 12.5 percent of original size [2021-08-26 02:19:18,121 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 86 treesize of output 82 [2021-08-26 02:19:18,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:18,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:18,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:18,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:19:18,212 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:19:18,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 83 [2021-08-26 02:19:18,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:18,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:18,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:18,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:18,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:19:18,221 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:19:18,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 77 [2021-08-26 02:19:18,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:19:18,623 INFO L354 Elim1Store]: treesize reduction 148, result has 16.4 percent of original size [2021-08-26 02:19:18,623 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 8 case distinctions, treesize of input 329 treesize of output 184 [2021-08-26 02:19:18,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:19:18,667 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-08-26 02:19:18,668 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 8 case distinctions, treesize of input 152 treesize of output 129 [2021-08-26 02:19:18,687 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-08-26 02:19:18,688 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 120 treesize of output 123 [2021-08-26 02:19:18,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:18,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:18,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:18,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:18,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:19:18,936 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-08-26 02:19:18,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 139 treesize of output 114 [2021-08-26 02:19:18,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:18,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:18,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:18,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:18,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:19:18,948 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-08-26 02:19:18,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 120 treesize of output 116 [2021-08-26 02:19:18,986 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 02:19:19,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:19:19,575 INFO L354 Elim1Store]: treesize reduction 332, result has 13.3 percent of original size [2021-08-26 02:19:19,576 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 17 case distinctions, treesize of input 326 treesize of output 296 [2021-08-26 02:19:19,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:19:19,673 INFO L354 Elim1Store]: treesize reduction 264, result has 14.0 percent of original size [2021-08-26 02:19:19,673 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 6 new quantified variables, introduced 17 case distinctions, treesize of input 253 treesize of output 202 [2021-08-26 02:19:19,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 243 treesize of output 210 [2021-08-26 02:19:19,723 INFO L354 Elim1Store]: treesize reduction 130, result has 19.8 percent of original size [2021-08-26 02:19:19,723 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 196 treesize of output 210 [2021-08-26 02:19:19,736 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-08-26 02:19:19,736 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 198 treesize of output 186 [2021-08-26 02:19:20,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:20,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:20,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:20,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:20,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:19:20,150 INFO L354 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2021-08-26 02:19:20,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 221 treesize of output 223 [2021-08-26 02:19:20,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:19:20,164 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-08-26 02:19:20,164 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 202 treesize of output 201 [2021-08-26 02:19:20,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:20,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:20,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:20,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:20,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:19:20,191 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-08-26 02:19:20,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 20 case distinctions, treesize of input 198 treesize of output 154 [2021-08-26 02:19:20,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:19:21,277 INFO L354 Elim1Store]: treesize reduction 396, result has 12.6 percent of original size [2021-08-26 02:19:21,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 30 case distinctions, treesize of input 389 treesize of output 319 [2021-08-26 02:19:21,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:19:21,440 INFO L354 Elim1Store]: treesize reduction 700, result has 11.3 percent of original size [2021-08-26 02:19:21,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 30 case distinctions, treesize of input 361 treesize of output 350 [2021-08-26 02:19:21,493 INFO L354 Elim1Store]: treesize reduction 172, result has 20.7 percent of original size [2021-08-26 02:19:21,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 322 treesize of output 296 [2021-08-26 02:19:21,511 INFO L354 Elim1Store]: treesize reduction 137, result has 5.5 percent of original size [2021-08-26 02:19:21,511 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 272 treesize of output 254 [2021-08-26 02:19:21,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:21,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:19:21,914 INFO L354 Elim1Store]: treesize reduction 128, result has 0.8 percent of original size [2021-08-26 02:19:21,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 36 case distinctions, treesize of input 265 treesize of output 202 [2021-08-26 02:19:21,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:21,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:21,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:19:21,933 INFO L354 Elim1Store]: treesize reduction 212, result has 0.5 percent of original size [2021-08-26 02:19:21,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 246 treesize of output 246 [2021-08-26 02:19:21,953 INFO L354 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2021-08-26 02:19:21,953 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 217 [2021-08-26 02:19:35,496 INFO L354 Elim1Store]: treesize reduction 297, result has 9.7 percent of original size [2021-08-26 02:19:35,497 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 247 treesize of output 171 [2021-08-26 02:19:35,561 INFO L354 Elim1Store]: treesize reduction 290, result has 1.0 percent of original size [2021-08-26 02:19:35,561 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 12 new quantified variables, introduced 45 case distinctions, treesize of input 147 treesize of output 100 [2021-08-26 02:19:35,743 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-08-26 02:19:35,744 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 45 treesize of output 37 [2021-08-26 02:19:35,755 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:19:35,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308334940] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:35,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:19:35,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 25 [2021-08-26 02:19:35,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219406987] [2021-08-26 02:19:35,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-26 02:19:35,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:19:35,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-26 02:19:35,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=518, Unknown=4, NotChecked=0, Total=600 [2021-08-26 02:19:35,757 INFO L87 Difference]: Start difference. First operand 123 states and 126 transitions. Second operand has 25 states, 25 states have (on average 5.56) internal successors, (139), 25 states have internal predecessors, (139), 0 states have call successors, (0), 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 02:20:03,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:20:03,866 INFO L93 Difference]: Finished difference Result 186 states and 190 transitions. [2021-08-26 02:20:03,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-26 02:20:03,867 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.56) internal successors, (139), 25 states have internal predecessors, (139), 0 states have call successors, (0), 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 72 [2021-08-26 02:20:03,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:20:03,868 INFO L225 Difference]: With dead ends: 186 [2021-08-26 02:20:03,868 INFO L226 Difference]: Without dead ends: 184 [2021-08-26 02:20:03,868 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 13774.2ms TimeCoverageRelationStatistics Valid=149, Invalid=1105, Unknown=6, NotChecked=0, Total=1260 [2021-08-26 02:20:03,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-08-26 02:20:03,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 80. [2021-08-26 02:20:03,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 79 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 02:20:03,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2021-08-26 02:20:03,881 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 72 [2021-08-26 02:20:03,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:20:03,881 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2021-08-26 02:20:03,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.56) internal successors, (139), 25 states have internal predecessors, (139), 0 states have call successors, (0), 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 02:20:03,881 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2021-08-26 02:20:03,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-08-26 02:20:03,881 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:20:03,881 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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 02:20:03,913 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 02:20:04,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:20:04,082 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:20:04,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:20:04,082 INFO L82 PathProgramCache]: Analyzing trace with hash -672046049, now seen corresponding path program 4 times [2021-08-26 02:20:04,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:20:04,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394208975] [2021-08-26 02:20:04,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:20:04,083 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:20:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:20:04,708 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 14 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:20:04,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:20:04,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394208975] [2021-08-26 02:20:04,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394208975] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:20:04,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359784233] [2021-08-26 02:20:04,709 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 02:20:04,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:20:04,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:20:04,710 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 02:20:04,711 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 02:20:09,294 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 02:20:09,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:20:09,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 62 conjunts are in the unsatisfiable core [2021-08-26 02:20:09,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:20:09,311 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 02:20:09,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:09,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:09,379 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:20:09,379 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 169 treesize of output 131 [2021-08-26 02:20:09,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:09,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:09,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:09,398 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-08-26 02:20:09,399 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 128 treesize of output 78 [2021-08-26 02:20:09,411 INFO L354 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2021-08-26 02:20:09,411 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 78 treesize of output 82 [2021-08-26 02:20:09,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:09,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:09,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:09,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:09,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:09,495 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:20:09,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 83 [2021-08-26 02:20:09,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:09,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:09,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:09,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:09,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:09,503 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:20:09,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 61 [2021-08-26 02:20:09,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:09,867 INFO L354 Elim1Store]: treesize reduction 148, result has 16.4 percent of original size [2021-08-26 02:20:09,867 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 8 case distinctions, treesize of input 329 treesize of output 184 [2021-08-26 02:20:09,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:09,925 INFO L354 Elim1Store]: treesize reduction 240, result has 15.8 percent of original size [2021-08-26 02:20:09,925 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 8 case distinctions, treesize of input 253 treesize of output 161 [2021-08-26 02:20:09,946 INFO L354 Elim1Store]: treesize reduction 108, result has 20.0 percent of original size [2021-08-26 02:20:09,946 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 152 treesize of output 159 [2021-08-26 02:20:10,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:10,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:10,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:10,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:10,182 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-08-26 02:20:10,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 172 treesize of output 122 [2021-08-26 02:20:10,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:10,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:10,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:10,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:10,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:10,193 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-08-26 02:20:10,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 121 treesize of output 117 [2021-08-26 02:20:10,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:10,667 INFO L354 Elim1Store]: treesize reduction 264, result has 14.0 percent of original size [2021-08-26 02:20:10,667 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 17 case distinctions, treesize of input 485 treesize of output 217 [2021-08-26 02:20:10,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:10,760 INFO L354 Elim1Store]: treesize reduction 552, result has 12.5 percent of original size [2021-08-26 02:20:10,760 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 17 case distinctions, treesize of input 369 treesize of output 239 [2021-08-26 02:20:10,774 INFO L354 Elim1Store]: treesize reduction 105, result has 13.2 percent of original size [2021-08-26 02:20:10,774 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 224 treesize of output 208 [2021-08-26 02:20:11,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:11,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:11,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:11,073 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-08-26 02:20:11,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 304 treesize of output 154 [2021-08-26 02:20:11,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:11,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:11,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:11,086 INFO L354 Elim1Store]: treesize reduction 192, result has 0.5 percent of original size [2021-08-26 02:20:11,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 253 treesize of output 223 [2021-08-26 02:20:15,658 INFO L354 Elim1Store]: treesize reduction 411, result has 5.9 percent of original size [2021-08-26 02:20:15,658 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 334 treesize of output 164 [2021-08-26 02:20:15,742 INFO L354 Elim1Store]: treesize reduction 375, result has 2.6 percent of original size [2021-08-26 02:20:15,743 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 14 new quantified variables, introduced 45 case distinctions, treesize of input 111 treesize of output 76 [2021-08-26 02:20:15,765 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 12 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:20:15,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359784233] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:20:15,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:20:15,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 26 [2021-08-26 02:20:15,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955354601] [2021-08-26 02:20:15,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-08-26 02:20:15,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:20:15,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-08-26 02:20:15,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2021-08-26 02:20:15,767 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 0 states have call successors, (0), 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 02:20:38,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:20:38,959 INFO L93 Difference]: Finished difference Result 145 states and 147 transitions. [2021-08-26 02:20:38,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-26 02:20:38,959 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 0 states have call successors, (0), 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 79 [2021-08-26 02:20:38,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:20:38,960 INFO L225 Difference]: With dead ends: 145 [2021-08-26 02:20:38,960 INFO L226 Difference]: Without dead ends: 89 [2021-08-26 02:20:38,960 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1105.2ms TimeCoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2021-08-26 02:20:38,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-08-26 02:20:38,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-08-26 02:20:38,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 88 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 02:20:38,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2021-08-26 02:20:38,977 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 79 [2021-08-26 02:20:38,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:20:38,977 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2021-08-26 02:20:38,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 0 states have call successors, (0), 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 02:20:38,978 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2021-08-26 02:20:38,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-08-26 02:20:38,978 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:20:38,978 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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 02:20:39,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-08-26 02:20:39,178 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,SelfDestructingSolverStorable32 [2021-08-26 02:20:39,181 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:20:39,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:20:39,182 INFO L82 PathProgramCache]: Analyzing trace with hash -12631752, now seen corresponding path program 5 times [2021-08-26 02:20:39,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:20:39,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328585940] [2021-08-26 02:20:39,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:20:39,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:20:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:20:39,925 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:20:39,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:20:39,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328585940] [2021-08-26 02:20:39,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328585940] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:20:39,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811463701] [2021-08-26 02:20:39,926 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 02:20:39,926 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:20:39,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:20:39,927 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 02:20:39,929 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 02:20:46,176 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-08-26 02:20:46,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:20:46,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 103 conjunts are in the unsatisfiable core [2021-08-26 02:20:46,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:20:46,219 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 02:20:46,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:46,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:46,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:46,279 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:20:46,279 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 169 treesize of output 131 [2021-08-26 02:20:46,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:46,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:46,298 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:20:46,298 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 2 case distinctions, treesize of input 103 treesize of output 65 [2021-08-26 02:20:46,312 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:20:46,312 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 62 treesize of output 66 [2021-08-26 02:20:46,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:46,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:46,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-08-26 02:20:46,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:46,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:46,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-08-26 02:20:46,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:46,729 INFO L354 Elim1Store]: treesize reduction 148, result has 16.4 percent of original size [2021-08-26 02:20:46,729 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 8 case distinctions, treesize of input 329 treesize of output 184 [2021-08-26 02:20:46,733 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:46,774 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-08-26 02:20:46,775 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 8 case distinctions, treesize of input 152 treesize of output 129 [2021-08-26 02:20:46,797 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-08-26 02:20:46,797 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 120 treesize of output 127 [2021-08-26 02:20:46,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:46,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:46,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:46,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:46,988 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:20:46,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 131 treesize of output 110 [2021-08-26 02:20:46,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:46,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:46,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:46,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:46,998 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-08-26 02:20:46,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 112 treesize of output 108 [2021-08-26 02:20:47,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:47,477 INFO L354 Elim1Store]: treesize reduction 264, result has 14.0 percent of original size [2021-08-26 02:20:47,478 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 7 new quantified variables, introduced 17 case distinctions, treesize of input 491 treesize of output 223 [2021-08-26 02:20:47,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:47,571 INFO L354 Elim1Store]: treesize reduction 496, result has 12.5 percent of original size [2021-08-26 02:20:47,572 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 17 case distinctions, treesize of input 326 treesize of output 220 [2021-08-26 02:20:47,619 INFO L354 Elim1Store]: treesize reduction 190, result has 15.9 percent of original size [2021-08-26 02:20:47,620 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 205 treesize of output 215 [2021-08-26 02:20:47,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:47,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:47,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:47,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:47,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:47,965 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-08-26 02:20:47,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 233 treesize of output 165 [2021-08-26 02:20:47,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:47,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:47,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:47,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:47,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:47,980 INFO L354 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2021-08-26 02:20:47,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 179 treesize of output 181 [2021-08-26 02:20:48,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:48,691 INFO L354 Elim1Store]: treesize reduction 396, result has 12.6 percent of original size [2021-08-26 02:20:48,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 30 case distinctions, treesize of input 322 treesize of output 260 [2021-08-26 02:20:48,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:48,805 INFO L354 Elim1Store]: treesize reduction 700, result has 11.3 percent of original size [2021-08-26 02:20:48,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 30 case distinctions, treesize of input 278 treesize of output 267 [2021-08-26 02:20:48,821 INFO L354 Elim1Store]: treesize reduction 141, result has 2.8 percent of original size [2021-08-26 02:20:48,821 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 246 treesize of output 224 [2021-08-26 02:20:49,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:49,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:49,142 INFO L354 Elim1Store]: treesize reduction 128, result has 0.8 percent of original size [2021-08-26 02:20:49,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 36 case distinctions, treesize of input 235 treesize of output 188 [2021-08-26 02:20:49,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:49,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:49,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:20:49,178 INFO L354 Elim1Store]: treesize reduction 240, result has 0.4 percent of original size [2021-08-26 02:20:49,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 220 treesize of output 232 [2021-08-26 02:20:49,182 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 205 treesize of output 201 [2021-08-26 02:21:12,356 INFO L354 Elim1Store]: treesize reduction 539, result has 8.5 percent of original size [2021-08-26 02:21:12,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 1 disjoint index pairs (out of 66 index pairs), introduced 19 new quantified variables, introduced 66 case distinctions, treesize of input 345 treesize of output 215 [2021-08-26 02:21:12,504 INFO L354 Elim1Store]: treesize reduction 519, result has 1.9 percent of original size [2021-08-26 02:21:12,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 1 disjoint index pairs (out of 66 index pairs), introduced 16 new quantified variables, introduced 66 case distinctions, treesize of input 153 treesize of output 110 [2021-08-26 02:21:12,557 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 27 treesize of output 19 [2021-08-26 02:21:12,565 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:21:12,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811463701] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:21:12,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:21:12,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 29 [2021-08-26 02:21:12,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429051221] [2021-08-26 02:21:12,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-08-26 02:21:12,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:21:12,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-08-26 02:21:12,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=731, Unknown=5, NotChecked=0, Total=812 [2021-08-26 02:21:12,566 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 29 states, 29 states have (on average 5.724137931034483) internal successors, (166), 29 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 02:21:50,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-08-26 02:21:50,173 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 02:21:50,210 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 02:21:50,374 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,SelfDestructingSolverStorable33 [2021-08-26 02:21:50,374 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) 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 02:21:50,377 INFO L168 Benchmark]: Toolchain (without parser) took 571469.01 ms. Allocated memory was 56.6 MB in the beginning and 799.0 MB in the end (delta: 742.4 MB). Free memory was 34.2 MB in the beginning and 259.9 MB in the end (delta: -225.6 MB). Peak memory consumption was 516.9 MB. Max. memory is 16.1 GB. [2021-08-26 02:21:50,377 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 56.6 MB. Free memory was 38.5 MB in the beginning and 38.4 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 02:21:50,377 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.38 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.1 MB in the beginning and 44.3 MB in the end (delta: -10.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 02:21:50,377 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.78 ms. Allocated memory is still 69.2 MB. Free memory was 44.3 MB in the beginning and 42.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 02:21:50,377 INFO L168 Benchmark]: Boogie Preprocessor took 72.59 ms. Allocated memory is still 69.2 MB. Free memory was 42.0 MB in the beginning and 39.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 02:21:50,377 INFO L168 Benchmark]: RCFGBuilder took 540.65 ms. Allocated memory is still 69.2 MB. Free memory was 39.9 MB in the beginning and 38.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2021-08-26 02:21:50,383 INFO L168 Benchmark]: TraceAbstraction took 570437.87 ms. Allocated memory was 69.2 MB in the beginning and 799.0 MB in the end (delta: 729.8 MB). Free memory was 37.5 MB in the beginning and 259.9 MB in the end (delta: -222.4 MB). Peak memory consumption was 506.5 MB. Max. memory is 16.1 GB. [2021-08-26 02:21:50,383 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 56.6 MB. Free memory was 38.5 MB in the beginning and 38.4 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 368.38 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.1 MB in the beginning and 44.3 MB in the end (delta: -10.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.78 ms. Allocated memory is still 69.2 MB. Free memory was 44.3 MB in the beginning and 42.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.59 ms. Allocated memory is still 69.2 MB. Free memory was 42.0 MB in the beginning and 39.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 540.65 ms. Allocated memory is still 69.2 MB. Free memory was 39.9 MB in the beginning and 38.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 570437.87 ms. Allocated memory was 69.2 MB in the beginning and 799.0 MB in the end (delta: 729.8 MB). Free memory was 37.5 MB in the beginning and 259.9 MB in the end (delta: -222.4 MB). Peak memory consumption was 506.5 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 02:21:51,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 02:21:51,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 02:21:51,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 02:21:51,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 02:21:51,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 02:21:51,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 02:21:51,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 02:21:51,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 02:21:51,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 02:21:51,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 02:21:51,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 02:21:51,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 02:21:51,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 02:21:51,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 02:21:51,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 02:21:51,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 02:21:51,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 02:21:51,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 02:21:51,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 02:21:51,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 02:21:51,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 02:21:51,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 02:21:51,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 02:21:51,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 02:21:51,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 02:21:51,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 02:21:51,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 02:21:51,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 02:21:51,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 02:21:51,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 02:21:51,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 02:21:51,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 02:21:51,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 02:21:51,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 02:21:51,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 02:21:51,970 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 02:21:51,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 02:21:51,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 02:21:51,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 02:21:51,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 02:21:51,973 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-26 02:21:52,005 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 02:21:52,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 02:21:52,006 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 02:21:52,007 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 02:21:52,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 02:21:52,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 02:21:52,008 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 02:21:52,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 02:21:52,009 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 02:21:52,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 02:21:52,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 02:21:52,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 02:21:52,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 02:21:52,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 02:21:52,010 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 02:21:52,010 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 02:21:52,010 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 02:21:52,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 02:21:52,010 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 02:21:52,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 02:21:52,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 02:21:52,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 02:21:52,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 02:21:52,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 02:21:52,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 02:21:52,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 02:21:52,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 02:21:52,012 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 02:21:52,012 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 02:21:52,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 02:21:52,012 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 02:21:52,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 02:21:52,013 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d0fe8819c9f9684711883fabc222e5491a603f3 [2021-08-26 02:21:52,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 02:21:52,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 02:21:52,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 02:21:52,323 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 02:21:52,327 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 02:21:52,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-queue-1.i [2021-08-26 02:21:52,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c11fea9df/1db115542cfc42b79e6535747b9e76b5/FLAG0c3945e47 [2021-08-26 02:21:52,894 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 02:21:52,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-1.i [2021-08-26 02:21:52,912 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c11fea9df/1db115542cfc42b79e6535747b9e76b5/FLAG0c3945e47 [2021-08-26 02:21:53,413 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c11fea9df/1db115542cfc42b79e6535747b9e76b5 [2021-08-26 02:21:53,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 02:21:53,417 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 02:21:53,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 02:21:53,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 02:21:53,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 02:21:53,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:21:53" (1/1) ... [2021-08-26 02:21:53,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@770449c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:21:53, skipping insertion in model container [2021-08-26 02:21:53,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:21:53" (1/1) ... [2021-08-26 02:21:53,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 02:21:53,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 02:21:53,727 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/dll-queue-1.i[22460,22473] [2021-08-26 02:21:53,733 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/dll-queue-1.i[22531,22544] [2021-08-26 02:21:53,734 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/dll-queue-1.i[22605,22618] [2021-08-26 02:21:53,736 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/dll-queue-1.i[22697,22710] [2021-08-26 02:21:53,738 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/dll-queue-1.i[22774,22787] [2021-08-26 02:21:53,739 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/dll-queue-1.i[22869,22882] [2021-08-26 02:21:53,740 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/dll-queue-1.i[22946,22959] [2021-08-26 02:21:53,742 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/dll-queue-1.i[23029,23042] [2021-08-26 02:21:53,743 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/dll-queue-1.i[23124,23137] [2021-08-26 02:21:53,744 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/dll-queue-1.i[23201,23214] [2021-08-26 02:21:53,747 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/dll-queue-1.i[23284,23297] [2021-08-26 02:21:53,749 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/dll-queue-1.i[23373,23386] [2021-08-26 02:21:53,749 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/dll-queue-1.i[23459,23472] [2021-08-26 02:21:53,751 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/dll-queue-1.i[23604,23617] [2021-08-26 02:21:53,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 02:21:53,768 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 02:21:53,806 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/dll-queue-1.i[22460,22473] [2021-08-26 02:21:53,809 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/dll-queue-1.i[22531,22544] [2021-08-26 02:21:53,812 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/dll-queue-1.i[22605,22618] [2021-08-26 02:21:53,814 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/dll-queue-1.i[22697,22710] [2021-08-26 02:21:53,816 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/dll-queue-1.i[22774,22787] [2021-08-26 02:21:53,817 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/dll-queue-1.i[22869,22882] [2021-08-26 02:21:53,817 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/dll-queue-1.i[22946,22959] [2021-08-26 02:21:53,819 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/dll-queue-1.i[23029,23042] [2021-08-26 02:21:53,821 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/dll-queue-1.i[23124,23137] [2021-08-26 02:21:53,822 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/dll-queue-1.i[23201,23214] [2021-08-26 02:21:53,823 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/dll-queue-1.i[23284,23297] [2021-08-26 02:21:53,825 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/dll-queue-1.i[23373,23386] [2021-08-26 02:21:53,826 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/dll-queue-1.i[23459,23472] [2021-08-26 02:21:53,829 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/dll-queue-1.i[23604,23617] [2021-08-26 02:21:53,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 02:21:53,859 INFO L208 MainTranslator]: Completed translation [2021-08-26 02:21:53,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:21:53 WrapperNode [2021-08-26 02:21:53,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 02:21:53,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 02:21:53,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 02:21:53,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 02:21:53,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:21:53" (1/1) ... [2021-08-26 02:21:53,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:21:53" (1/1) ... [2021-08-26 02:21:53,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 02:21:53,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 02:21:53,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 02:21:53,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 02:21:53,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:21:53" (1/1) ... [2021-08-26 02:21:53,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:21:53" (1/1) ... [2021-08-26 02:21:53,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:21:53" (1/1) ... [2021-08-26 02:21:53,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:21:53" (1/1) ... [2021-08-26 02:21:53,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:21:53" (1/1) ... [2021-08-26 02:21:53,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:21:53" (1/1) ... [2021-08-26 02:21:53,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:21:53" (1/1) ... [2021-08-26 02:21:53,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 02:21:53,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 02:21:53,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 02:21:53,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 02:21:53,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:21:53" (1/1) ... [2021-08-26 02:21:53,992 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 02:21:53,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:21:54,026 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 02:21:54,057 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 02:21:54,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-26 02:21:54,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-26 02:21:54,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-26 02:21:54,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 02:21:54,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-26 02:21:54,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 02:21:54,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-26 02:21:54,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 02:21:54,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 02:21:54,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 02:21:54,702 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 02:21:54,702 INFO L299 CfgBuilder]: Removed 35 assume(true) statements. [2021-08-26 02:21:54,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:21:54 BoogieIcfgContainer [2021-08-26 02:21:54,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 02:21:54,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 02:21:54,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 02:21:54,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 02:21:54,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 02:21:53" (1/3) ... [2021-08-26 02:21:54,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9e61b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:21:54, skipping insertion in model container [2021-08-26 02:21:54,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:21:53" (2/3) ... [2021-08-26 02:21:54,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9e61b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:21:54, skipping insertion in model container [2021-08-26 02:21:54,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:21:54" (3/3) ... [2021-08-26 02:21:54,717 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-queue-1.i [2021-08-26 02:21:54,721 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 02:21:54,736 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-08-26 02:21:54,801 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 02:21:54,806 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 02:21:54,806 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-08-26 02:21:54,833 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 67 states have (on average 2.029850746268657) internal successors, (136), 81 states have internal predecessors, (136), 0 states have call successors, (0), 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 02:21:54,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-26 02:21:54,837 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:21:54,849 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-26 02:21:54,850 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:21:54,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:21:54,854 INFO L82 PathProgramCache]: Analyzing trace with hash 28699591, now seen corresponding path program 1 times [2021-08-26 02:21:54,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:21:54,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182233860] [2021-08-26 02:21:54,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:21:54,865 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:21:54,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:21:54,867 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 02:21:54,878 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 02:21:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:21:54,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-26 02:21:54,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:21:54,995 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 02:21:54,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:21:55,027 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 02:21:55,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:21:55,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182233860] [2021-08-26 02:21:55,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182233860] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:21:55,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:21:55,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-26 02:21:55,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192476308] [2021-08-26 02:21:55,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:21:55,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:21:55,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:21:55,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:21:55,051 INFO L87 Difference]: Start difference. First operand has 82 states, 67 states have (on average 2.029850746268657) internal successors, (136), 81 states have internal predecessors, (136), 0 states have call successors, (0), 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 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 02:21:55,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:21:55,121 INFO L93 Difference]: Finished difference Result 153 states and 263 transitions. [2021-08-26 02:21:55,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:21:55,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-08-26 02:21:55,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:21:55,130 INFO L225 Difference]: With dead ends: 153 [2021-08-26 02:21:55,130 INFO L226 Difference]: Without dead ends: 67 [2021-08-26 02:21:55,133 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:21:55,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-08-26 02:21:55,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-08-26 02:21:55,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 58 states have (on average 1.293103448275862) internal successors, (75), 66 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 02:21:55,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2021-08-26 02:21:55,161 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 5 [2021-08-26 02:21:55,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:21:55,161 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2021-08-26 02:21:55,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 02:21:55,162 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2021-08-26 02:21:55,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-26 02:21:55,162 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:21:55,162 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:21:55,177 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 02:21:55,372 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 02:21:55,373 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:21:55,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:21:55,373 INFO L82 PathProgramCache]: Analyzing trace with hash 296515339, now seen corresponding path program 1 times [2021-08-26 02:21:55,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:21:55,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515424269] [2021-08-26 02:21:55,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:21:55,374 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:21:55,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:21:55,387 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 02:21:55,394 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 02:21:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:21:55,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-26 02:21:55,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:21:55,561 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 02:21:55,620 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-26 02:21:55,621 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 42 treesize of output 42 [2021-08-26 02:21:55,678 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 02:21:55,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:21:55,757 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 02:21:55,757 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:21:55,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515424269] [2021-08-26 02:21:55,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515424269] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:21:55,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:21:55,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 4 [2021-08-26 02:21:55,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478498948] [2021-08-26 02:21:55,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:21:55,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:21:55,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:21:55,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:21:55,766 INFO L87 Difference]: Start difference. First operand 67 states and 75 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 02:21:55,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:21:55,853 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2021-08-26 02:21:55,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:21:55,855 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 8 [2021-08-26 02:21:55,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:21:55,856 INFO L225 Difference]: With dead ends: 67 [2021-08-26 02:21:55,856 INFO L226 Difference]: Without dead ends: 65 [2021-08-26 02:21:55,856 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:21:55,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-08-26 02:21:55,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-08-26 02:21:55,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 57 states have (on average 1.280701754385965) internal successors, (73), 64 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 02:21:55,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2021-08-26 02:21:55,864 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 8 [2021-08-26 02:21:55,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:21:55,864 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2021-08-26 02:21:55,864 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 02:21:55,864 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2021-08-26 02:21:55,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 02:21:55,866 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:21:55,866 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:21:55,882 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 02:21:56,066 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 02:21:56,067 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:21:56,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:21:56,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1137960540, now seen corresponding path program 1 times [2021-08-26 02:21:56,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:21:56,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041580707] [2021-08-26 02:21:56,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:21:56,068 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:21:56,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:21:56,070 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 02:21:56,072 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 02:21:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:21:56,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-26 02:21:56,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:21:56,186 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 02:21:56,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:21:56,236 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 02:21:56,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:21:56,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041580707] [2021-08-26 02:21:56,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041580707] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:21:56,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:21:56,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-08-26 02:21:56,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922364902] [2021-08-26 02:21:56,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:21:56,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:21:56,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:21:56,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:21:56,238 INFO L87 Difference]: Start difference. First operand 65 states and 73 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 02:21:56,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:21:56,344 INFO L93 Difference]: Finished difference Result 165 states and 194 transitions. [2021-08-26 02:21:56,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 02:21:56,345 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 11 [2021-08-26 02:21:56,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:21:56,347 INFO L225 Difference]: With dead ends: 165 [2021-08-26 02:21:56,348 INFO L226 Difference]: Without dead ends: 102 [2021-08-26 02:21:56,349 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:21:56,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-08-26 02:21:56,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 82. [2021-08-26 02:21:56,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 74 states have (on average 1.2567567567567568) internal successors, (93), 81 states have internal predecessors, (93), 0 states have call successors, (0), 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 02:21:56,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2021-08-26 02:21:56,367 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 11 [2021-08-26 02:21:56,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:21:56,368 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2021-08-26 02:21:56,368 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 02:21:56,368 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2021-08-26 02:21:56,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-26 02:21:56,369 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:21:56,369 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:21:56,382 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 02:21:56,579 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 02:21:56,579 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:21:56,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:21:56,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1315213501, now seen corresponding path program 1 times [2021-08-26 02:21:56,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:21:56,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233207346] [2021-08-26 02:21:56,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:21:56,581 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:21:56,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:21:56,582 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 02:21:56,588 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 02:21:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:21:56,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-26 02:21:56,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:21:56,719 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 02:21:56,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:21:56,766 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 02:21:56,767 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:21:56,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233207346] [2021-08-26 02:21:56,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233207346] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:21:56,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:21:56,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-26 02:21:56,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285181302] [2021-08-26 02:21:56,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:21:56,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:21:56,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:21:56,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:21:56,769 INFO L87 Difference]: Start difference. First operand 82 states and 93 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 02:21:56,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:21:56,846 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2021-08-26 02:21:56,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 02:21:56,848 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 02:21:56,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:21:56,849 INFO L225 Difference]: With dead ends: 98 [2021-08-26 02:21:56,849 INFO L226 Difference]: Without dead ends: 78 [2021-08-26 02:21:56,849 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:21:56,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-08-26 02:21:56,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-08-26 02:21:56,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 70 states have (on average 1.2571428571428571) internal successors, (88), 77 states have internal predecessors, (88), 0 states have call successors, (0), 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 02:21:56,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2021-08-26 02:21:56,860 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 14 [2021-08-26 02:21:56,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:21:56,861 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2021-08-26 02:21:56,861 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 02:21:56,861 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2021-08-26 02:21:56,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 02:21:56,862 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:21:56,862 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:21:56,875 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 02:21:57,070 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 02:21:57,071 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:21:57,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:21:57,071 INFO L82 PathProgramCache]: Analyzing trace with hash 129337073, now seen corresponding path program 1 times [2021-08-26 02:21:57,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:21:57,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282619402] [2021-08-26 02:21:57,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:21:57,072 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:21:57,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:21:57,075 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 02:21:57,076 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 02:21:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:21:57,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-26 02:21:57,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:21:57,207 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 02:21:57,287 INFO L354 Elim1Store]: treesize reduction 74, result has 20.4 percent of original size [2021-08-26 02:21:57,288 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 2 case distinctions, treesize of input 103 treesize of output 69 [2021-08-26 02:21:57,306 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-08-26 02:21:57,307 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 86 treesize of output 86 [2021-08-26 02:21:57,446 INFO L354 Elim1Store]: treesize reduction 112, result has 20.0 percent of original size [2021-08-26 02:21:57,447 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 74 treesize of output 64 [2021-08-26 02:21:58,004 INFO L354 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2021-08-26 02:21:58,005 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 55 treesize of output 38 [2021-08-26 02:21:58,029 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 02:21:58,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:21:58,131 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 3298 treesize of output 3282 [2021-08-26 02:21:58,837 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 02:21:58,837 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:21:58,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282619402] [2021-08-26 02:21:58,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282619402] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-26 02:21:58,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:21:58,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-08-26 02:21:58,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606905856] [2021-08-26 02:21:58,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 02:21:58,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:21:58,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 02:21:58,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-26 02:21:58,839 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 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 02:21:59,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:21:59,790 INFO L93 Difference]: Finished difference Result 148 states and 164 transitions. [2021-08-26 02:21:59,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 02:21:59,790 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 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 17 [2021-08-26 02:21:59,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:21:59,791 INFO L225 Difference]: With dead ends: 148 [2021-08-26 02:21:59,791 INFO L226 Difference]: Without dead ends: 146 [2021-08-26 02:21:59,792 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 203.9ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-08-26 02:21:59,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-08-26 02:21:59,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 90. [2021-08-26 02:21:59,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 82 states have (on average 1.2439024390243902) internal successors, (102), 89 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 02:21:59,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2021-08-26 02:21:59,796 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 17 [2021-08-26 02:21:59,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:21:59,797 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2021-08-26 02:21:59,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 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 02:21:59,797 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2021-08-26 02:21:59,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-26 02:21:59,797 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:21:59,797 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 02:21:59,809 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 02:22:00,007 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 02:22:00,008 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:22:00,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:22:00,008 INFO L82 PathProgramCache]: Analyzing trace with hash 32191693, now seen corresponding path program 1 times [2021-08-26 02:22:00,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:22:00,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647789403] [2021-08-26 02:22:00,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:22:00,009 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:22:00,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:22:00,009 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 02:22:00,010 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 02:22:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:22:00,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-26 02:22:00,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:22:00,172 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 02:22:00,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:22:00,216 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 02:22:00,216 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:22:00,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647789403] [2021-08-26 02:22:00,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1647789403] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:22:00,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:22:00,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-26 02:22:00,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480847698] [2021-08-26 02:22:00,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:22:00,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:22:00,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:22:00,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:22:00,218 INFO L87 Difference]: Start difference. First operand 90 states and 102 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 02:22:00,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:22:00,270 INFO L93 Difference]: Finished difference Result 176 states and 201 transitions. [2021-08-26 02:22:00,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:22:00,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 02:22:00,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:22:00,271 INFO L225 Difference]: With dead ends: 176 [2021-08-26 02:22:00,271 INFO L226 Difference]: Without dead ends: 102 [2021-08-26 02:22:00,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:22:00,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-08-26 02:22:00,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2021-08-26 02:22:00,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 91 states have internal predecessors, (100), 0 states have call successors, (0), 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 02:22:00,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2021-08-26 02:22:00,279 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 18 [2021-08-26 02:22:00,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:22:00,279 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2021-08-26 02:22:00,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 02:22:00,279 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2021-08-26 02:22:00,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-26 02:22:00,280 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:22:00,280 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 02:22:00,289 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 02:22:00,487 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 02:22:00,488 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:22:00,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:22:00,488 INFO L82 PathProgramCache]: Analyzing trace with hash 43662915, now seen corresponding path program 1 times [2021-08-26 02:22:00,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:22:00,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779293198] [2021-08-26 02:22:00,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:22:00,489 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:22:00,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:22:00,489 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 02:22:00,490 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 02:22:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:22:00,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-26 02:22:00,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:22:00,644 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 02:22:00,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:00,729 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:22:00,729 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 168 treesize of output 130 [2021-08-26 02:22:00,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:00,754 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:22:00,755 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 102 treesize of output 64 [2021-08-26 02:22:00,764 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-08-26 02:22:00,764 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 73 treesize of output 73 [2021-08-26 02:22:00,865 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:22:00,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 93 [2021-08-26 02:22:00,878 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-26 02:22:00,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 88 [2021-08-26 02:22:00,881 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 79 treesize of output 71 [2021-08-26 02:22:01,470 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:22:01,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 52 [2021-08-26 02:22:01,475 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:22:01,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 24 [2021-08-26 02:22:01,523 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 17 [2021-08-26 02:22:01,536 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 02:22:01,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:22:01,668 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 99 treesize of output 85 [2021-08-26 02:22:01,751 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:22:01,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779293198] [2021-08-26 02:22:01,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-26 02:22:01,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1340590804] [2021-08-26 02:22:01,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:22:01,752 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-26 02:22:01,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-26 02:22:01,764 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-26 02:22:01,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-08-26 02:22:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:22:02,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-26 02:22:02,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:22:02,017 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 02:22:02,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:02,103 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-08-26 02:22:02,104 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 168 treesize of output 130 [2021-08-26 02:22:02,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:02,130 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-08-26 02:22:02,130 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 123 treesize of output 73 [2021-08-26 02:22:02,138 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-08-26 02:22:02,139 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 73 treesize of output 73 [2021-08-26 02:22:02,207 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:22:02,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 93 [2021-08-26 02:22:02,210 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 106 treesize of output 98 [2021-08-26 02:22:02,215 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-26 02:22:02,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 80 [2021-08-26 02:22:02,748 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:22:02,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 52 [2021-08-26 02:22:02,754 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:22:02,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 24 [2021-08-26 02:22:02,784 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 17 [2021-08-26 02:22:02,788 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 02:22:02,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:22:02,892 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 99 treesize of output 85 [2021-08-26 02:22:02,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-26 02:22:02,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214749791] [2021-08-26 02:22:02,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:22:02,957 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:22:02,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:22:02,960 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 02:22:02,961 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 02:22:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:22:03,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-26 02:22:03,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:22:03,214 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 02:22:03,308 INFO L354 Elim1Store]: treesize reduction 78, result has 16.1 percent of original size [2021-08-26 02:22:03,308 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 2 case distinctions, treesize of input 188 treesize of output 150 [2021-08-26 02:22:03,342 INFO L354 Elim1Store]: treesize reduction 98, result has 16.2 percent of original size [2021-08-26 02:22:03,342 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 2 case distinctions, treesize of input 180 treesize of output 130 [2021-08-26 02:22:03,357 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-08-26 02:22:03,357 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 130 treesize of output 130 [2021-08-26 02:22:03,472 INFO L354 Elim1Store]: treesize reduction 53, result has 11.7 percent of original size [2021-08-26 02:22:03,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 133 treesize of output 93 [2021-08-26 02:22:03,477 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 106 treesize of output 98 [2021-08-26 02:22:03,491 INFO L354 Elim1Store]: treesize reduction 73, result has 8.8 percent of original size [2021-08-26 02:22:03,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 98 treesize of output 80 [2021-08-26 02:22:04,042 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-08-26 02:22:04,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 61 [2021-08-26 02:22:04,052 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:22:04,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 27 [2021-08-26 02:22:04,087 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 17 [2021-08-26 02:22:04,092 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 02:22:04,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:22:04,209 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 99 treesize of output 85 [2021-08-26 02:22:04,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-26 02:22:04,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:22:04,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-26 02:22:04,286 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-26 02:22:04,286 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-26 02:22:04,289 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:22:04,290 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:22:04,290 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:22:04,290 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:22:04,290 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:22:04,290 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:22:04,290 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:22:04,290 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:22:04,291 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:22:04,291 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:22:04,291 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:22:04,291 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:22:04,291 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:22:04,291 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:22:04,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-08-26 02:22:04,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-08-26 02:22:04,711 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 02:22:04,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:22:04,899 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 02:22:04,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 02:22:04 BoogieIcfgContainer [2021-08-26 02:22:04,916 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 02:22:04,917 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 02:22:04,917 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 02:22:04,917 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 02:22:04,917 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:21:54" (3/4) ... [2021-08-26 02:22:04,920 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 02:22:04,921 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 02:22:04,921 INFO L168 Benchmark]: Toolchain (without parser) took 11504.64 ms. Allocated memory was 56.6 MB in the beginning and 176.2 MB in the end (delta: 119.5 MB). Free memory was 34.2 MB in the beginning and 135.9 MB in the end (delta: -101.6 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2021-08-26 02:22:04,921 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 56.6 MB. Free memory was 39.1 MB in the beginning and 39.1 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 02:22:04,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 442.88 ms. Allocated memory is still 56.6 MB. Free memory was 34.0 MB in the beginning and 30.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 02:22:04,922 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.15 ms. Allocated memory is still 56.6 MB. Free memory was 30.0 MB in the beginning and 27.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 02:22:04,922 INFO L168 Benchmark]: Boogie Preprocessor took 57.82 ms. Allocated memory is still 56.6 MB. Free memory was 27.7 MB in the beginning and 25.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 02:22:04,922 INFO L168 Benchmark]: RCFGBuilder took 725.98 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 25.3 MB in the beginning and 36.5 MB in the end (delta: -11.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2021-08-26 02:22:04,923 INFO L168 Benchmark]: TraceAbstraction took 10203.95 ms. Allocated memory was 69.2 MB in the beginning and 176.2 MB in the end (delta: 107.0 MB). Free memory was 35.9 MB in the beginning and 135.9 MB in the end (delta: -100.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-08-26 02:22:04,923 INFO L168 Benchmark]: Witness Printer took 4.06 ms. Allocated memory is still 176.2 MB. Free memory is still 135.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 02:22:04,927 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 56.6 MB. Free memory was 39.1 MB in the beginning and 39.1 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 442.88 ms. Allocated memory is still 56.6 MB. Free memory was 34.0 MB in the beginning and 30.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.15 ms. Allocated memory is still 56.6 MB. Free memory was 30.0 MB in the beginning and 27.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.82 ms. Allocated memory is still 56.6 MB. Free memory was 27.7 MB in the beginning and 25.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 725.98 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 25.3 MB in the beginning and 36.5 MB in the end (delta: -11.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10203.95 ms. Allocated memory was 69.2 MB in the beginning and 176.2 MB in the end (delta: 107.0 MB). Free memory was 35.9 MB in the beginning and 135.9 MB in the end (delta: -100.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Witness Printer took 4.06 ms. Allocated memory is still 176.2 MB. Free memory is still 135.9 MB. There was no memory consumed. 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: 1055]: 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: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = ((void*)0) [L999] head->prev = ((void*)0) [L1000] head->data = 0 [L1001] SLL* item = head; [L1002] int status = 0; [L1004] COND TRUE __VERIFIER_nondet_int() [L1006] item->next = malloc(sizeof(SLL)) [L1007] EXPR item->next [L1007] item->next->prev = item [L1008] EXPR item->next [L1008] item = item->next [L1009] item->next = ((void*)0) [L1011] COND TRUE !status [L1013] item->data = 1 [L1014] status = 1 [L1027] COND FALSE !(!(head != ((void*)0))) [L1028] COND FALSE !(!(item != ((void*)0))) [L1004] COND FALSE !(__VERIFIER_nondet_int()) [L1031] COND FALSE !(!(head != ((void*)0))) [L1032] COND TRUE status == 1 [L1034] COND FALSE !(!(head != ((void*)0))) [L1035] EXPR head->next [L1035] COND FALSE !(!(head->next != ((void*)0))) [L1037] COND FALSE !(status == 2) [L1043] COND FALSE !(status == 3) [L1052] EXPR head->next [L1052] item = head->next [L1053] COND TRUE item && __VERIFIER_nondet_int() [L1055] EXPR !status || item->data > 0 [L1055] EXPR item->data [L1055] EXPR !status || item->data > 0 [L1055] COND TRUE !(!status || item->data > 0) [L1055] reach_error() - UnprovableResult [Line: 1027]: 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: 1028]: 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: 1031]: 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: 1034]: 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: 1039]: 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: 1041]: 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: 1045]: 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: 1046]: 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: 1047]: 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: 1048]: 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: 1049]: 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, 82 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 10098.0ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 13.6ms, AutomataDifference: 1388.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 21.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 390 SDtfs, 403 SDslu, 634 SDs, 0 SdLazy, 281 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 990.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 243.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=6, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 65.2ms AutomataMinimizationTime, 6 MinimizatonAttempts, 86 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 61.7ms SsaConstructionTime, 163.7ms SatisfiabilityAnalysisTime, 2296.4ms InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 134 ConstructedInterpolants, 13 QuantifiedInterpolants, 987 SizeOfPredicates, 10 NumberOfNonLiveVariables, 311 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 12 InterpolantComputations, 10 PerfectInterpolantSequences, 2/4 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 02:22:04,956 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...