./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/sll-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/sll-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 e7731899c5e817fc6eaadbde2ec1f0ed993fe63c ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/forester-heap/sll-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 e7731899c5e817fc6eaadbde2ec1f0ed993fe63c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 02:18:56,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 02:18:56,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 02:18:56,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 02:18:56,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 02:18:56,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 02:18:56,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 02:18:56,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 02:18:56,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 02:18:56,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 02:18:56,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 02:18:56,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 02:18:56,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 02:18:56,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 02:18:56,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 02:18:56,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 02:18:56,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 02:18:56,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 02:18:56,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 02:18:56,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 02:18:56,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 02:18:56,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 02:18:56,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 02:18:56,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 02:18:56,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 02:18:56,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 02:18:56,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 02:18:56,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 02:18:56,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 02:18:56,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 02:18:56,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 02:18:56,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 02:18:56,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 02:18:56,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 02:18:56,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 02:18:56,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 02:18:56,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 02:18:56,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 02:18:56,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 02:18:56,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 02:18:56,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 02:18:56,765 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 02:18:56,788 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 02:18:56,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 02:18:56,792 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 02:18:56,792 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 02:18:56,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 02:18:56,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 02:18:56,794 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 02:18:56,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 02:18:56,795 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 02:18:56,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 02:18:56,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 02:18:56,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 02:18:56,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 02:18:56,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 02:18:56,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 02:18:56,797 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 02:18:56,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 02:18:56,797 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 02:18:56,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 02:18:56,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 02:18:56,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 02:18:56,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 02:18:56,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 02:18:56,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 02:18:56,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 02:18:56,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 02:18:56,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 02:18:56,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 02:18:56,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 02:18:56,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 02:18:56,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7731899c5e817fc6eaadbde2ec1f0ed993fe63c [2021-08-26 02:18:57,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 02:18:57,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 02:18:57,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 02:18:57,122 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 02:18:57,123 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 02:18:57,124 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-queue-1.i [2021-08-26 02:18:57,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74f79ba15/850f66f07b5c4a88b18b76065bbdc141/FLAG8f9c9efa8 [2021-08-26 02:18:57,670 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 02:18:57,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i [2021-08-26 02:18:57,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74f79ba15/850f66f07b5c4a88b18b76065bbdc141/FLAG8f9c9efa8 [2021-08-26 02:18:58,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74f79ba15/850f66f07b5c4a88b18b76065bbdc141 [2021-08-26 02:18:58,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 02:18:58,032 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 02:18:58,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 02:18:58,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 02:18:58,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 02:18:58,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:18:58" (1/1) ... [2021-08-26 02:18:58,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6303c376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:18:58, skipping insertion in model container [2021-08-26 02:18:58,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:18:58" (1/1) ... [2021-08-26 02:18:58,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 02:18:58,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 02:18:58,280 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[22387,22400] [2021-08-26 02:18:58,284 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[22458,22471] [2021-08-26 02:18:58,285 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[22532,22545] [2021-08-26 02:18:58,286 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[22624,22637] [2021-08-26 02:18:58,286 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[22701,22714] [2021-08-26 02:18:58,287 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[22796,22809] [2021-08-26 02:18:58,288 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[22873,22886] [2021-08-26 02:18:58,289 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[22956,22969] [2021-08-26 02:18:58,290 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[23051,23064] [2021-08-26 02:18:58,290 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[23128,23141] [2021-08-26 02:18:58,291 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[23211,23224] [2021-08-26 02:18:58,292 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[23300,23313] [2021-08-26 02:18:58,293 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[23386,23399] [2021-08-26 02:18:58,294 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[23532,23545] [2021-08-26 02:18:58,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 02:18:58,303 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 02:18:58,332 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[22387,22400] [2021-08-26 02:18:58,337 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[22458,22471] [2021-08-26 02:18:58,338 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[22532,22545] [2021-08-26 02:18:58,339 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[22624,22637] [2021-08-26 02:18:58,339 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[22701,22714] [2021-08-26 02:18:58,340 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[22796,22809] [2021-08-26 02:18:58,341 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[22873,22886] [2021-08-26 02:18:58,348 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[22956,22969] [2021-08-26 02:18:58,349 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[23051,23064] [2021-08-26 02:18:58,350 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[23128,23141] [2021-08-26 02:18:58,350 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[23211,23224] [2021-08-26 02:18:58,351 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[23300,23313] [2021-08-26 02:18:58,352 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[23386,23399] [2021-08-26 02:18:58,353 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[23532,23545] [2021-08-26 02:18:58,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 02:18:58,383 INFO L208 MainTranslator]: Completed translation [2021-08-26 02:18:58,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:18:58 WrapperNode [2021-08-26 02:18:58,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 02:18:58,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 02:18:58,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 02:18:58,386 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 02:18:58,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:18:58" (1/1) ... [2021-08-26 02:18:58,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:18:58" (1/1) ... [2021-08-26 02:18:58,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 02:18:58,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 02:18:58,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 02:18:58,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 02:18:58,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:18:58" (1/1) ... [2021-08-26 02:18:58,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:18:58" (1/1) ... [2021-08-26 02:18:58,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:18:58" (1/1) ... [2021-08-26 02:18:58,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:18:58" (1/1) ... [2021-08-26 02:18:58,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:18:58" (1/1) ... [2021-08-26 02:18:58,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:18:58" (1/1) ... [2021-08-26 02:18:58,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:18:58" (1/1) ... [2021-08-26 02:18:58,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 02:18:58,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 02:18:58,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 02:18:58,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 02:18:58,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:18:58" (1/1) ... [2021-08-26 02:18:58,481 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 02:18:58,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:18:58,502 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 02:18:58,518 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 02:18:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-26 02:18:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-26 02:18:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-26 02:18:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-26 02:18:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 02:18:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-26 02:18:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 02:18:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 02:18:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 02:18:58,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 02:18:59,045 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 02:18:59,046 INFO L299 CfgBuilder]: Removed 35 assume(true) statements. [2021-08-26 02:18:59,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:18:59 BoogieIcfgContainer [2021-08-26 02:18:59,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 02:18:59,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 02:18:59,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 02:18:59,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 02:18:59,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 02:18:58" (1/3) ... [2021-08-26 02:18:59,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@689e1f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:18:59, skipping insertion in model container [2021-08-26 02:18:59,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:18:58" (2/3) ... [2021-08-26 02:18:59,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@689e1f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:18:59, skipping insertion in model container [2021-08-26 02:18:59,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:18:59" (3/3) ... [2021-08-26 02:18:59,053 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-queue-1.i [2021-08-26 02:18:59,057 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 02:18:59,058 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-08-26 02:18:59,094 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 02:18:59,113 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 02:18:59,114 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-08-26 02:18:59,127 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 02:18:59,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-26 02:18:59,130 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:18:59,131 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-26 02:18:59,131 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 02:18:59,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:18:59,136 INFO L82 PathProgramCache]: Analyzing trace with hash 28752478, now seen corresponding path program 1 times [2021-08-26 02:18:59,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:18:59,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344862229] [2021-08-26 02:18:59,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:18:59,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:18:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:18:59,292 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 02:18:59,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:18:59,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344862229] [2021-08-26 02:18:59,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344862229] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:18:59,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:18:59,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 02:18:59,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534510579] [2021-08-26 02:18:59,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 02:18:59,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:18:59,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 02:18:59,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 02:18:59,313 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 02:18:59,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:18:59,339 INFO L93 Difference]: Finished difference Result 168 states and 278 transitions. [2021-08-26 02:18:59,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 02:18:59,340 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 02:18:59,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:18:59,349 INFO L225 Difference]: With dead ends: 168 [2021-08-26 02:18:59,349 INFO L226 Difference]: Without dead ends: 80 [2021-08-26 02:18:59,351 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 02:18:59,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-08-26 02:18:59,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-08-26 02:18:59,383 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 02:18:59,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2021-08-26 02:18:59,385 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 5 [2021-08-26 02:18:59,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:18:59,385 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2021-08-26 02:18:59,386 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 02:18:59,386 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2021-08-26 02:18:59,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-26 02:18:59,386 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:18:59,386 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-26 02:18:59,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 02:18:59,387 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 02:18:59,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:18:59,392 INFO L82 PathProgramCache]: Analyzing trace with hash 889571111, now seen corresponding path program 1 times [2021-08-26 02:18:59,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:18:59,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316977572] [2021-08-26 02:18:59,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:18:59,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:18:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:18:59,459 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 02:18:59,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:18:59,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316977572] [2021-08-26 02:18:59,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316977572] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:18:59,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:18:59,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:18:59,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394660342] [2021-08-26 02:18:59,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:18:59,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:18:59,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:18:59,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:18:59,464 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 02:18:59,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:18:59,508 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2021-08-26 02:18:59,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:18:59,511 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 02:18:59,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:18:59,515 INFO L225 Difference]: With dead ends: 80 [2021-08-26 02:18:59,515 INFO L226 Difference]: Without dead ends: 70 [2021-08-26 02:18:59,516 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:18:59,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-08-26 02:18:59,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-08-26 02:18:59,525 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 02:18:59,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2021-08-26 02:18:59,525 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 6 [2021-08-26 02:18:59,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:18:59,526 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2021-08-26 02:18:59,526 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 02:18:59,526 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2021-08-26 02:18:59,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 02:18:59,526 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:18:59,526 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:18:59,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 02:18:59,527 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 02:18:59,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:18:59,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1270244236, now seen corresponding path program 1 times [2021-08-26 02:18:59,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:18:59,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620124215] [2021-08-26 02:18:59,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:18:59,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:18:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:18:59,567 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 02:18:59,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:18:59,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620124215] [2021-08-26 02:18:59,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620124215] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:18:59,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:18:59,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:18:59,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871365813] [2021-08-26 02:18:59,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:18:59,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:18:59,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:18:59,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:18:59,569 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 02:18:59,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:18:59,590 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2021-08-26 02:18:59,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:18:59,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 02:18:59,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:18:59,591 INFO L225 Difference]: With dead ends: 70 [2021-08-26 02:18:59,591 INFO L226 Difference]: Without dead ends: 68 [2021-08-26 02:18:59,591 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:18:59,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-08-26 02:18:59,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-08-26 02:18:59,595 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 02:18:59,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2021-08-26 02:18:59,596 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 9 [2021-08-26 02:18:59,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:18:59,596 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2021-08-26 02:18:59,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 02:18:59,596 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2021-08-26 02:18:59,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-26 02:18:59,597 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:18:59,597 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:18:59,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 02:18:59,597 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 02:18:59,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:18:59,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1286414876, now seen corresponding path program 1 times [2021-08-26 02:18:59,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:18:59,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165774847] [2021-08-26 02:18:59,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:18:59,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:18:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:18:59,632 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 02:18:59,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:18:59,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165774847] [2021-08-26 02:18:59,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165774847] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:18:59,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:18:59,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:18:59,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786458373] [2021-08-26 02:18:59,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:18:59,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:18:59,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:18:59,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:18:59,634 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 02:18:59,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:18:59,686 INFO L93 Difference]: Finished difference Result 153 states and 178 transitions. [2021-08-26 02:18:59,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:18:59,689 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 02:18:59,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:18:59,689 INFO L225 Difference]: With dead ends: 153 [2021-08-26 02:18:59,689 INFO L226 Difference]: Without dead ends: 87 [2021-08-26 02:18:59,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:18:59,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-08-26 02:18:59,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2021-08-26 02:18:59,696 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 02:18:59,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2021-08-26 02:18:59,696 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 12 [2021-08-26 02:18:59,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:18:59,696 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2021-08-26 02:18:59,697 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 02:18:59,697 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2021-08-26 02:18:59,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 02:18:59,697 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:18:59,697 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 02:18:59,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-26 02:18:59,698 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 02:18:59,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:18:59,698 INFO L82 PathProgramCache]: Analyzing trace with hash -138012862, now seen corresponding path program 1 times [2021-08-26 02:18:59,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:18:59,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853721303] [2021-08-26 02:18:59,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:18:59,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:18:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:18:59,824 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 02:18:59,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:18:59,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853721303] [2021-08-26 02:18:59,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853721303] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:18:59,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:18:59,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 02:18:59,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218505059] [2021-08-26 02:18:59,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 02:18:59,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:18:59,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 02:18:59,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:18:59,827 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 02:18:59,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:18:59,920 INFO L93 Difference]: Finished difference Result 91 states and 104 transitions. [2021-08-26 02:18:59,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 02:18:59,920 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 02:18:59,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:18:59,921 INFO L225 Difference]: With dead ends: 91 [2021-08-26 02:18:59,921 INFO L226 Difference]: Without dead ends: 71 [2021-08-26 02:18:59,921 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-26 02:18:59,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-08-26 02:18:59,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-08-26 02:18:59,925 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 02:18:59,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2021-08-26 02:18:59,926 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 17 [2021-08-26 02:18:59,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:18:59,926 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2021-08-26 02:18:59,926 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 02:18:59,926 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2021-08-26 02:18:59,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-26 02:18:59,927 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:18:59,927 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 02:18:59,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-26 02:18:59,927 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 02:18:59,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:18:59,928 INFO L82 PathProgramCache]: Analyzing trace with hash -472870040, now seen corresponding path program 1 times [2021-08-26 02:18:59,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:18:59,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417569762] [2021-08-26 02:18:59,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:18:59,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:18:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:00,044 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 02:19:00,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:19:00,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417569762] [2021-08-26 02:19:00,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417569762] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:00,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165966864] [2021-08-26 02:19:00,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:00,045 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:19:00,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:19:00,047 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 02:19:00,068 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 02:19:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:00,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-26 02:19:00,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:19:00,218 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 02:19:00,335 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-08-26 02:19:00,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-08-26 02:19:00,369 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-26 02:19:00,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-08-26 02:19:00,455 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-08-26 02:19:00,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 44 [2021-08-26 02:19:00,814 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-26 02:19:00,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 18 [2021-08-26 02:19:00,823 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 02:19:00,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165966864] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:00,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:19:00,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2021-08-26 02:19:00,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079033075] [2021-08-26 02:19:00,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 02:19:00,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:19:00,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 02:19:00,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-26 02:19:00,825 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 02:19:01,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:19:01,017 INFO L93 Difference]: Finished difference Result 144 states and 158 transitions. [2021-08-26 02:19:01,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 02:19:01,018 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 02:19:01,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:19:01,019 INFO L225 Difference]: With dead ends: 144 [2021-08-26 02:19:01,019 INFO L226 Difference]: Without dead ends: 142 [2021-08-26 02:19:01,020 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 118.9ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-08-26 02:19:01,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-08-26 02:19:01,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 84. [2021-08-26 02:19:01,026 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 02:19:01,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2021-08-26 02:19:01,026 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 19 [2021-08-26 02:19:01,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:19:01,027 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2021-08-26 02:19:01,027 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 02:19:01,027 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2021-08-26 02:19:01,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-26 02:19:01,028 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:19:01,028 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 02:19:01,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-26 02:19:01,248 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 02:19:01,248 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 02:19:01,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:19:01,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1456359625, now seen corresponding path program 1 times [2021-08-26 02:19:01,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:19:01,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053388527] [2021-08-26 02:19:01,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:01,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:19:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:01,281 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 02:19:01,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:19:01,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053388527] [2021-08-26 02:19:01,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053388527] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:19:01,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:19:01,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:19:01,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253937466] [2021-08-26 02:19:01,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:19:01,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:19:01,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:19:01,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:19:01,290 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 02:19:01,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:19:01,326 INFO L93 Difference]: Finished difference Result 174 states and 199 transitions. [2021-08-26 02:19:01,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:19:01,327 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 02:19:01,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:19:01,327 INFO L225 Difference]: With dead ends: 174 [2021-08-26 02:19:01,328 INFO L226 Difference]: Without dead ends: 108 [2021-08-26 02:19:01,328 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:19:01,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-08-26 02:19:01,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 97. [2021-08-26 02:19:01,333 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 02:19:01,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2021-08-26 02:19:01,334 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 20 [2021-08-26 02:19:01,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:19:01,335 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2021-08-26 02:19:01,335 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 02:19:01,335 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2021-08-26 02:19:01,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-26 02:19:01,336 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:19:01,336 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 02:19:01,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-26 02:19:01,336 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 02:19:01,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:19:01,337 INFO L82 PathProgramCache]: Analyzing trace with hash 886899864, now seen corresponding path program 1 times [2021-08-26 02:19:01,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:19:01,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273780048] [2021-08-26 02:19:01,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:01,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:19:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:01,370 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 02:19:01,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:19:01,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273780048] [2021-08-26 02:19:01,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273780048] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:19:01,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:19:01,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:19:01,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321434318] [2021-08-26 02:19:01,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:19:01,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:19:01,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:19:01,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:19:01,372 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 02:19:01,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:19:01,407 INFO L93 Difference]: Finished difference Result 201 states and 228 transitions. [2021-08-26 02:19:01,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:19:01,408 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 02:19:01,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:19:01,411 INFO L225 Difference]: With dead ends: 201 [2021-08-26 02:19:01,415 INFO L226 Difference]: Without dead ends: 122 [2021-08-26 02:19:01,418 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:19:01,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-08-26 02:19:01,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 110. [2021-08-26 02:19:01,433 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 02:19:01,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2021-08-26 02:19:01,434 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 27 [2021-08-26 02:19:01,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:19:01,434 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2021-08-26 02:19:01,435 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 02:19:01,435 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2021-08-26 02:19:01,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-26 02:19:01,436 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:19:01,436 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 02:19:01,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-26 02:19:01,437 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 02:19:01,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:19:01,437 INFO L82 PathProgramCache]: Analyzing trace with hash 2041801735, now seen corresponding path program 1 times [2021-08-26 02:19:01,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:19:01,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449712220] [2021-08-26 02:19:01,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:01,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:19:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:01,629 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 02:19:01,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:19:01,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449712220] [2021-08-26 02:19:01,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449712220] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:01,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567884423] [2021-08-26 02:19:01,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:01,630 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:19:01,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:19:01,638 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 02:19:01,639 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 02:19:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:01,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 21 conjunts are in the unsatisfiable core [2021-08-26 02:19:01,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:19:01,801 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 02:19:01,917 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-08-26 02:19:01,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-08-26 02:19:01,942 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:19:01,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:19:02,018 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-08-26 02:19:02,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:19:02,252 INFO L354 Elim1Store]: treesize reduction 90, result has 14.3 percent of original size [2021-08-26 02:19:02,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 90 treesize of output 51 [2021-08-26 02:19:02,270 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-08-26 02:19:02,270 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 54 treesize of output 56 [2021-08-26 02:19:02,420 INFO L354 Elim1Store]: treesize reduction 130, result has 14.5 percent of original size [2021-08-26 02:19:02,420 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 62 [2021-08-26 02:19:02,879 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-08-26 02:19:02,880 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 67 treesize of output 29 [2021-08-26 02:19:02,888 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 02:19:02,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567884423] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:02,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:19:02,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2021-08-26 02:19:02,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979217038] [2021-08-26 02:19:02,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-26 02:19:02,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:19:02,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-26 02:19:02,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-08-26 02:19:02,892 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 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 02:19:05,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:19:05,560 INFO L93 Difference]: Finished difference Result 180 states and 196 transitions. [2021-08-26 02:19:05,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 02:19:05,561 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 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 02:19:05,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:19:05,562 INFO L225 Difference]: With dead ends: 180 [2021-08-26 02:19:05,562 INFO L226 Difference]: Without dead ends: 178 [2021-08-26 02:19:05,562 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 291.3ms TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-08-26 02:19:05,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-08-26 02:19:05,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 126. [2021-08-26 02:19:05,567 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 02:19:05,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 138 transitions. [2021-08-26 02:19:05,567 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 138 transitions. Word has length 28 [2021-08-26 02:19:05,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:19:05,568 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 138 transitions. [2021-08-26 02:19:05,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 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 02:19:05,568 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 138 transitions. [2021-08-26 02:19:05,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-26 02:19:05,569 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:19:05,569 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 02:19:05,595 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 02:19:05,792 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 02:19:05,793 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 02:19:05,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:19:05,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1259768676, now seen corresponding path program 1 times [2021-08-26 02:19:05,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:19:05,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062227001] [2021-08-26 02:19:05,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:05,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:19:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:05,820 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 02:19:05,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:19:05,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062227001] [2021-08-26 02:19:05,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062227001] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:19:05,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:19:05,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:19:05,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562841529] [2021-08-26 02:19:05,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:19:05,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:19:05,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:19:05,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:19:05,823 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 02:19:05,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:19:05,832 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2021-08-26 02:19:05,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:19:05,832 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 02:19:05,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:19:05,833 INFO L225 Difference]: With dead ends: 129 [2021-08-26 02:19:05,833 INFO L226 Difference]: Without dead ends: 127 [2021-08-26 02:19:05,834 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 02:19:05,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-08-26 02:19:05,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-08-26 02:19:05,837 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 02:19:05,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 139 transitions. [2021-08-26 02:19:05,838 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 139 transitions. Word has length 29 [2021-08-26 02:19:05,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:19:05,838 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 139 transitions. [2021-08-26 02:19:05,838 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 02:19:05,839 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 139 transitions. [2021-08-26 02:19:05,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-26 02:19:05,839 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:19:05,840 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 02:19:05,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-26 02:19:05,840 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 02:19:05,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:19:05,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1259766754, now seen corresponding path program 1 times [2021-08-26 02:19:05,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:19:05,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147346387] [2021-08-26 02:19:05,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:05,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:19:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:06,059 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 02:19:06,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:19:06,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147346387] [2021-08-26 02:19:06,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147346387] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:06,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653686742] [2021-08-26 02:19:06,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:06,062 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:19:06,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:19:06,065 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 02:19:06,067 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 02:19:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:06,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-26 02:19:06,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:19:06,273 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 02:19:06,318 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-08-26 02:19:06,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-08-26 02:19:06,340 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:19:06,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:19:06,356 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-26 02:19:06,357 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 11 treesize of output 11 [2021-08-26 02:19:06,417 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:19:06,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 76 [2021-08-26 02:19:06,424 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 84 treesize of output 76 [2021-08-26 02:19:06,429 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-26 02:19:06,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 55 [2021-08-26 02:19:06,850 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:19:06,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 42 [2021-08-26 02:19:06,855 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:19:06,856 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 33 treesize of output 21 [2021-08-26 02:19:06,916 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 02:19:06,928 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 02:19:06,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653686742] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:06,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:19:06,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 12 [2021-08-26 02:19:06,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500670816] [2021-08-26 02:19:06,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-26 02:19:06,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:19:06,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-26 02:19:06,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-08-26 02:19:06,930 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 02:19:07,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:19:07,287 INFO L93 Difference]: Finished difference Result 163 states and 177 transitions. [2021-08-26 02:19:07,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 02:19:07,288 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 02:19:07,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:19:07,288 INFO L225 Difference]: With dead ends: 163 [2021-08-26 02:19:07,289 INFO L226 Difference]: Without dead ends: 161 [2021-08-26 02:19:07,289 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 306.3ms TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-08-26 02:19:07,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-08-26 02:19:07,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 136. [2021-08-26 02:19:07,294 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 02:19:07,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 149 transitions. [2021-08-26 02:19:07,295 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 149 transitions. Word has length 29 [2021-08-26 02:19:07,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:19:07,295 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 149 transitions. [2021-08-26 02:19:07,295 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 02:19:07,295 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 149 transitions. [2021-08-26 02:19:07,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-26 02:19:07,296 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:19:07,296 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 02:19:07,320 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 02:19:07,508 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 02:19:07,509 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 02:19:07,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:19:07,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1992708989, now seen corresponding path program 1 times [2021-08-26 02:19:07,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:19:07,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071796317] [2021-08-26 02:19:07,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:07,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:19:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:07,718 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 02:19:07,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:19:07,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071796317] [2021-08-26 02:19:07,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071796317] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:07,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939599548] [2021-08-26 02:19:07,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:07,719 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:19:07,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:19:07,720 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 02:19:07,721 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 02:19:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:07,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 33 conjunts are in the unsatisfiable core [2021-08-26 02:19:07,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:19:07,950 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 02:19:08,014 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:19:08,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:19:08,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:19:08,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:19:08,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:08,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:19:08,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:08,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:19:08,362 INFO L354 Elim1Store]: treesize reduction 78, result has 16.1 percent of original size [2021-08-26 02:19:08,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 143 treesize of output 88 [2021-08-26 02:19:08,395 INFO L354 Elim1Store]: treesize reduction 102, result has 15.7 percent of original size [2021-08-26 02:19:08,395 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 107 treesize of output 77 [2021-08-26 02:19:08,409 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-08-26 02:19:08,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 71 treesize of output 73 [2021-08-26 02:19:08,562 INFO L354 Elim1Store]: treesize reduction 126, result has 14.9 percent of original size [2021-08-26 02:19:08,563 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 175 treesize of output 98 [2021-08-26 02:19:08,594 INFO L354 Elim1Store]: treesize reduction 226, result has 13.1 percent of original size [2021-08-26 02:19:08,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 132 treesize of output 98 [2021-08-26 02:19:09,212 INFO L354 Elim1Store]: treesize reduction 69, result has 10.4 percent of original size [2021-08-26 02:19:09,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 104 treesize of output 53 [2021-08-26 02:19:09,222 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-08-26 02:19:09,223 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 38 treesize of output 26 [2021-08-26 02:19:09,232 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 02:19:09,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939599548] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:09,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:19:09,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 14 [2021-08-26 02:19:09,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789907721] [2021-08-26 02:19:09,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-26 02:19:09,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:19:09,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-26 02:19:09,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-08-26 02:19:09,236 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 02:19:09,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:19:09,633 INFO L93 Difference]: Finished difference Result 158 states and 172 transitions. [2021-08-26 02:19:09,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 02:19:09,637 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 02:19:09,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:19:09,640 INFO L225 Difference]: With dead ends: 158 [2021-08-26 02:19:09,640 INFO L226 Difference]: Without dead ends: 156 [2021-08-26 02:19:09,641 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 317.3ms TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-08-26 02:19:09,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-08-26 02:19:09,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 139. [2021-08-26 02:19:09,648 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 02:19:09,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 152 transitions. [2021-08-26 02:19:09,649 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 152 transitions. Word has length 31 [2021-08-26 02:19:09,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:19:09,650 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 152 transitions. [2021-08-26 02:19:09,650 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 02:19:09,650 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 152 transitions. [2021-08-26 02:19:09,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-26 02:19:09,655 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:19:09,655 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 02:19:09,683 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 02:19:09,878 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 02:19:09,879 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 02:19:09,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:19:09,879 INFO L82 PathProgramCache]: Analyzing trace with hash 509365297, now seen corresponding path program 1 times [2021-08-26 02:19:09,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:19:09,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829236] [2021-08-26 02:19:09,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:09,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:19:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:09,928 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 02:19:09,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:19:09,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829236] [2021-08-26 02:19:09,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829236] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:19:09,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:19:09,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:19:09,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450929783] [2021-08-26 02:19:09,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:19:09,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:19:09,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:19:09,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:19:09,931 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 02:19:09,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:19:09,960 INFO L93 Difference]: Finished difference Result 204 states and 226 transitions. [2021-08-26 02:19:09,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:19:09,960 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 02:19:09,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:19:09,962 INFO L225 Difference]: With dead ends: 204 [2021-08-26 02:19:09,962 INFO L226 Difference]: Without dead ends: 111 [2021-08-26 02:19:09,963 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 02:19:09,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-08-26 02:19:09,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 96. [2021-08-26 02:19:09,973 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 02:19:09,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2021-08-26 02:19:09,974 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 36 [2021-08-26 02:19:09,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:19:09,974 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2021-08-26 02:19:09,974 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 02:19:09,974 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2021-08-26 02:19:09,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-26 02:19:09,975 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:19:09,975 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 02:19:09,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-26 02:19:09,975 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 02:19:09,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:19:09,975 INFO L82 PathProgramCache]: Analyzing trace with hash 525270376, now seen corresponding path program 1 times [2021-08-26 02:19:09,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:19:09,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930036310] [2021-08-26 02:19:09,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:09,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:19:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:10,012 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 02:19:10,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:19:10,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930036310] [2021-08-26 02:19:10,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930036310] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:19:10,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:19:10,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 02:19:10,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001316486] [2021-08-26 02:19:10,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:19:10,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:19:10,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:19:10,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:19:10,015 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 02:19:10,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:19:10,047 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2021-08-26 02:19:10,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 02:19:10,048 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 02:19:10,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:19:10,049 INFO L225 Difference]: With dead ends: 118 [2021-08-26 02:19:10,049 INFO L226 Difference]: Without dead ends: 107 [2021-08-26 02:19:10,049 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 02:19:10,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-08-26 02:19:10,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2021-08-26 02:19:10,053 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 02:19:10,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2021-08-26 02:19:10,054 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 37 [2021-08-26 02:19:10,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:19:10,054 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2021-08-26 02:19:10,054 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 02:19:10,054 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2021-08-26 02:19:10,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-26 02:19:10,054 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:19:10,054 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 02:19:10,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-26 02:19:10,055 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 02:19:10,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:19:10,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1226334954, now seen corresponding path program 1 times [2021-08-26 02:19:10,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:19:10,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095419102] [2021-08-26 02:19:10,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:10,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:19:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:10,255 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 02:19:10,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:19:10,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095419102] [2021-08-26 02:19:10,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095419102] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:10,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396883764] [2021-08-26 02:19:10,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:10,256 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:19:10,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:19:10,257 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 02:19:10,258 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 02:19:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:10,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 02:19:10,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:19:10,602 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 02:19:10,649 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-26 02:19:10,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-08-26 02:19:10,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:19:10,668 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 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:19:10,715 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:19:10,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 65 [2021-08-26 02:19:10,721 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-26 02:19:10,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 44 [2021-08-26 02:19:11,315 INFO L354 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2021-08-26 02:19:11,316 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 68 treesize of output 42 [2021-08-26 02:19:11,329 INFO L354 Elim1Store]: treesize reduction 26, result has 10.3 percent of original size [2021-08-26 02:19:11,329 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 33 treesize of output 23 [2021-08-26 02:19:11,352 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 02:19:11,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396883764] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:11,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:19:11,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2021-08-26 02:19:11,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143751306] [2021-08-26 02:19:11,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-26 02:19:11,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:19:11,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-26 02:19:11,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-08-26 02:19:11,354 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 02:19:11,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:19:11,585 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2021-08-26 02:19:11,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 02:19:11,586 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 02:19:11,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:19:11,586 INFO L225 Difference]: With dead ends: 111 [2021-08-26 02:19:11,586 INFO L226 Difference]: Without dead ends: 80 [2021-08-26 02:19:11,588 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 227.0ms TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-08-26 02:19:11,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-08-26 02:19:11,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-08-26 02:19:11,591 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 02:19:11,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2021-08-26 02:19:11,592 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 37 [2021-08-26 02:19:11,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:19:11,593 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2021-08-26 02:19:11,593 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 02:19:11,593 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2021-08-26 02:19:11,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-08-26 02:19:11,593 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:19:11,593 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 02:19:11,618 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 02:19:11,811 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 02:19:11,812 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 02:19:11,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:19:11,812 INFO L82 PathProgramCache]: Analyzing trace with hash 778254669, now seen corresponding path program 1 times [2021-08-26 02:19:11,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:19:11,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735877079] [2021-08-26 02:19:11,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:11,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:19:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:12,006 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 02:19:12,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:19:12,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735877079] [2021-08-26 02:19:12,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735877079] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:12,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709647902] [2021-08-26 02:19:12,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:12,006 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:19:12,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:19:12,007 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 02:19:12,008 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 02:19:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:12,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-26 02:19:12,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:19:12,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:19:12,436 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:19:12,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:19:12,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:19:12,501 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-08-26 02:19:12,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:19:12,687 INFO L354 Elim1Store]: treesize reduction 90, result has 14.3 percent of original size [2021-08-26 02:19:12,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 96 treesize of output 57 [2021-08-26 02:19:12,715 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:19:12,715 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 60 treesize of output 75 [2021-08-26 02:19:12,866 INFO L354 Elim1Store]: treesize reduction 84, result has 15.2 percent of original size [2021-08-26 02:19:12,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 71 treesize of output 48 [2021-08-26 02:19:13,153 INFO L354 Elim1Store]: treesize reduction 168, result has 11.6 percent of original size [2021-08-26 02:19:13,154 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 5 new quantified variables, introduced 7 case distinctions, treesize of input 151 treesize of output 74 [2021-08-26 02:19:13,177 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-08-26 02:19:13,177 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 99 treesize of output 103 [2021-08-26 02:19:13,382 INFO L354 Elim1Store]: treesize reduction 200, result has 12.7 percent of original size [2021-08-26 02:19:13,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 179 treesize of output 84 [2021-08-26 02:19:14,183 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-08-26 02:19:14,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 131 treesize of output 44 [2021-08-26 02:19:14,191 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 02:19:14,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709647902] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:14,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:19:14,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2021-08-26 02:19:14,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563955684] [2021-08-26 02:19:14,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-26 02:19:14,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:19:14,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-26 02:19:14,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-08-26 02:19:14,193 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 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 02:19:21,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:19:21,361 INFO L93 Difference]: Finished difference Result 149 states and 159 transitions. [2021-08-26 02:19:21,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-26 02:19:21,363 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 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 02:19:21,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:19:21,363 INFO L225 Difference]: With dead ends: 149 [2021-08-26 02:19:21,363 INFO L226 Difference]: Without dead ends: 147 [2021-08-26 02:19:21,364 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 422.6ms TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2021-08-26 02:19:21,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-08-26 02:19:21,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 78. [2021-08-26 02:19:21,367 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 02:19:21,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2021-08-26 02:19:21,368 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 38 [2021-08-26 02:19:21,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:19:21,368 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2021-08-26 02:19:21,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 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 02:19:21,368 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2021-08-26 02:19:21,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-26 02:19:21,369 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:19:21,369 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 02:19:21,396 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 02:19:21,570 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 02:19:21,570 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 02:19:21,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:19:21,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1793269558, now seen corresponding path program 1 times [2021-08-26 02:19:21,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:19:21,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312164511] [2021-08-26 02:19:21,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:21,571 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:19:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:21,862 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 02:19:21,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:19:21,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312164511] [2021-08-26 02:19:21,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312164511] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:21,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950557435] [2021-08-26 02:19:21,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:21,863 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:19:21,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:19:21,878 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 02:19:21,880 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 02:19:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:22,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 35 conjunts are in the unsatisfiable core [2021-08-26 02:19:22,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:19:22,357 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 02:19:22,393 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-08-26 02:19:22,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-08-26 02:19:22,408 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:19:22,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:19:22,427 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:19:22,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:19:22,486 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 02:19:22,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:22,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:19:22,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:22,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:19:22,813 INFO L354 Elim1Store]: treesize reduction 78, result has 16.1 percent of original size [2021-08-26 02:19:22,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 196 treesize of output 125 [2021-08-26 02:19:22,844 INFO L354 Elim1Store]: treesize reduction 102, result has 15.7 percent of original size [2021-08-26 02:19:22,845 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 4 case distinctions, treesize of input 160 treesize of output 130 [2021-08-26 02:19:22,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 100 [2021-08-26 02:19:22,861 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-08-26 02:19:22,862 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 97 treesize of output 85 [2021-08-26 02:19:22,874 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-08-26 02:19:22,874 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 82 treesize of output 84 [2021-08-26 02:19:23,016 INFO L354 Elim1Store]: treesize reduction 126, result has 14.9 percent of original size [2021-08-26 02:19:23,016 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 203 treesize of output 114 [2021-08-26 02:19:23,046 INFO L354 Elim1Store]: treesize reduction 226, result has 13.1 percent of original size [2021-08-26 02:19:23,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 160 treesize of output 126 [2021-08-26 02:19:23,056 INFO L354 Elim1Store]: treesize reduction 57, result has 16.2 percent of original size [2021-08-26 02:19:23,056 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 117 treesize of output 108 [2021-08-26 02:19:23,807 INFO L354 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2021-08-26 02:19:23,807 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 119 treesize of output 69 [2021-08-26 02:19:23,814 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-08-26 02:19:23,814 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 41 [2021-08-26 02:19:23,943 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-08-26 02:19:23,944 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 02:19:23,953 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 02:19:23,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950557435] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:23,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:19:23,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-08-26 02:19:23,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584101005] [2021-08-26 02:19:23,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-26 02:19:23,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:19:23,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-26 02:19:23,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-08-26 02:19:23,955 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 02:19:24,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:19:24,486 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2021-08-26 02:19:24,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 02:19:24,487 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 02:19:24,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:19:24,488 INFO L225 Difference]: With dead ends: 101 [2021-08-26 02:19:24,488 INFO L226 Difference]: Without dead ends: 99 [2021-08-26 02:19:24,488 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 496.8ms TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-08-26 02:19:24,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-08-26 02:19:24,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 84. [2021-08-26 02:19:24,492 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 02:19:24,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2021-08-26 02:19:24,493 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 40 [2021-08-26 02:19:24,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:19:24,493 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2021-08-26 02:19:24,493 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 02:19:24,494 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2021-08-26 02:19:24,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-26 02:19:24,494 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:19:24,494 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 02:19:24,516 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 02:19:24,708 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 02:19:24,709 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 02:19:24,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:19:24,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1428751921, now seen corresponding path program 1 times [2021-08-26 02:19:24,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:19:24,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610760229] [2021-08-26 02:19:24,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:24,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:19:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:24,746 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 02:19:24,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:19:24,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610760229] [2021-08-26 02:19:24,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610760229] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:19:24,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:19:24,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:19:24,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990584702] [2021-08-26 02:19:24,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:19:24,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:19:24,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:19:24,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:19:24,748 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 02:19:24,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:19:24,769 INFO L93 Difference]: Finished difference Result 110 states and 117 transitions. [2021-08-26 02:19:24,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:19:24,769 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 02:19:24,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:19:24,770 INFO L225 Difference]: With dead ends: 110 [2021-08-26 02:19:24,770 INFO L226 Difference]: Without dead ends: 98 [2021-08-26 02:19:24,770 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:19:24,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-08-26 02:19:24,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 84. [2021-08-26 02:19:24,775 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 02:19:24,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2021-08-26 02:19:24,775 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 41 [2021-08-26 02:19:24,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:19:24,775 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2021-08-26 02:19:24,776 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 02:19:24,776 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2021-08-26 02:19:24,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-26 02:19:24,776 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:19:24,776 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 02:19:24,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-26 02:19:24,776 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 02:19:24,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:19:24,777 INFO L82 PathProgramCache]: Analyzing trace with hash 755507507, now seen corresponding path program 1 times [2021-08-26 02:19:24,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:19:24,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021042818] [2021-08-26 02:19:24,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:24,778 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:19:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:25,100 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 02:19:25,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:19:25,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021042818] [2021-08-26 02:19:25,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021042818] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:25,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933736871] [2021-08-26 02:19:25,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:25,101 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:19:25,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:19:25,109 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 02:19:25,110 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 02:19:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:25,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 42 conjunts are in the unsatisfiable core [2021-08-26 02:19:25,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:19:25,727 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 02:19:25,798 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-08-26 02:19:25,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-08-26 02:19:25,815 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:19:25,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:19:25,838 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:19:25,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:19:25,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:25,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:19:25,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:25,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:19:26,109 INFO L354 Elim1Store]: treesize reduction 78, result has 16.1 percent of original size [2021-08-26 02:19:26,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 149 treesize of output 94 [2021-08-26 02:19:26,134 INFO L354 Elim1Store]: treesize reduction 102, result has 15.7 percent of original size [2021-08-26 02:19:26,135 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 113 treesize of output 83 [2021-08-26 02:19:26,159 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:19:26,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 77 treesize of output 92 [2021-08-26 02:19:26,322 INFO L354 Elim1Store]: treesize reduction 80, result has 15.8 percent of original size [2021-08-26 02:19:26,324 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 99 treesize of output 80 [2021-08-26 02:19:26,345 INFO L354 Elim1Store]: treesize reduction 100, result has 16.0 percent of original size [2021-08-26 02:19:26,346 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 4 case distinctions, treesize of input 80 treesize of output 70 [2021-08-26 02:19:26,660 INFO L354 Elim1Store]: treesize reduction 164, result has 11.8 percent of original size [2021-08-26 02:19:26,660 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 5 new quantified variables, introduced 7 case distinctions, treesize of input 239 treesize of output 118 [2021-08-26 02:19:26,715 INFO L354 Elim1Store]: treesize reduction 272, result has 11.1 percent of original size [2021-08-26 02:19:26,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 187 treesize of output 144 [2021-08-26 02:19:26,734 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-08-26 02:19:26,734 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 135 treesize of output 139 [2021-08-26 02:19:26,982 INFO L354 Elim1Store]: treesize reduction 196, result has 12.9 percent of original size [2021-08-26 02:19:26,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 282 treesize of output 127 [2021-08-26 02:19:27,025 INFO L354 Elim1Store]: treesize reduction 436, result has 10.8 percent of original size [2021-08-26 02:19:27,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 227 treesize of output 184 [2021-08-26 02:19:27,874 INFO L354 Elim1Store]: treesize reduction 121, result has 6.2 percent of original size [2021-08-26 02:19:27,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 187 treesize of output 75 [2021-08-26 02:19:27,882 INFO L354 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2021-08-26 02:19:27,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 41 [2021-08-26 02:19:27,888 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 02:19:27,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933736871] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:27,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:19:27,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2021-08-26 02:19:27,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575499040] [2021-08-26 02:19:27,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-26 02:19:27,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:19:27,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-26 02:19:27,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-08-26 02:19:27,890 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 02:19:28,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:19:28,487 INFO L93 Difference]: Finished difference Result 144 states and 151 transitions. [2021-08-26 02:19:28,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 02:19:28,487 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 02:19:28,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:19:28,488 INFO L225 Difference]: With dead ends: 144 [2021-08-26 02:19:28,488 INFO L226 Difference]: Without dead ends: 142 [2021-08-26 02:19:28,489 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 544.4ms TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2021-08-26 02:19:28,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-08-26 02:19:28,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 105. [2021-08-26 02:19:28,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 101 states have (on average 1.0891089108910892) internal successors, (110), 104 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:19:28,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 110 transitions. [2021-08-26 02:19:28,495 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 110 transitions. Word has length 41 [2021-08-26 02:19:28,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:19:28,496 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 110 transitions. [2021-08-26 02:19:28,496 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 02:19:28,496 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 110 transitions. [2021-08-26 02:19:28,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-08-26 02:19:28,496 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:19:28,497 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 02:19:28,525 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 02:19:28,712 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 02:19:28,713 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 02:19:28,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:19:28,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1699655007, now seen corresponding path program 1 times [2021-08-26 02:19:28,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:19:28,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953845960] [2021-08-26 02:19:28,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:28,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:19:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:28,990 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 02:19:28,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:19:28,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953845960] [2021-08-26 02:19:28,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953845960] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:28,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018424020] [2021-08-26 02:19:28,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:28,991 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:19:28,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:19:28,992 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 02:19:28,993 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 02:19:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:29,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 55 conjunts are in the unsatisfiable core [2021-08-26 02:19:29,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:19:29,752 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 02:19:29,817 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-08-26 02:19:29,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-08-26 02:19:29,837 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:19:29,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:19:29,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:19:29,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:29,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:19:29,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:29,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:19:30,171 INFO L354 Elim1Store]: treesize reduction 58, result has 20.5 percent of original size [2021-08-26 02:19:30,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 149 treesize of output 94 [2021-08-26 02:19:30,193 INFO L354 Elim1Store]: treesize reduction 82, result has 18.8 percent of original size [2021-08-26 02:19:30,193 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 4 case distinctions, treesize of input 113 treesize of output 83 [2021-08-26 02:19:30,220 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:19:30,221 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 77 treesize of output 92 [2021-08-26 02:19:30,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:30,392 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-08-26 02:19:30,392 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 80 [2021-08-26 02:19:30,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:30,398 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:19:30,398 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 2 case distinctions, treesize of input 80 treesize of output 70 [2021-08-26 02:19:30,692 INFO L354 Elim1Store]: treesize reduction 140, result has 13.6 percent of original size [2021-08-26 02:19:30,692 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 5 new quantified variables, introduced 7 case distinctions, treesize of input 227 treesize of output 114 [2021-08-26 02:19:30,733 INFO L354 Elim1Store]: treesize reduction 248, result has 12.1 percent of original size [2021-08-26 02:19:30,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 175 treesize of output 132 [2021-08-26 02:19:30,755 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-08-26 02:19:30,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 123 treesize of output 127 [2021-08-26 02:19:30,957 INFO L354 Elim1Store]: treesize reduction 188, result has 13.4 percent of original size [2021-08-26 02:19:30,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 258 treesize of output 119 [2021-08-26 02:19:31,003 INFO L354 Elim1Store]: treesize reduction 428, result has 11.0 percent of original size [2021-08-26 02:19:31,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 203 treesize of output 160 [2021-08-26 02:19:31,822 INFO L354 Elim1Store]: treesize reduction 166, result has 10.3 percent of original size [2021-08-26 02:19:31,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 179 treesize of output 92 [2021-08-26 02:19:31,831 INFO L354 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2021-08-26 02:19:31,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 41 [2021-08-26 02:19:31,839 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 02:19:31,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018424020] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:31,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:19:31,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2021-08-26 02:19:31,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533268727] [2021-08-26 02:19:31,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-26 02:19:31,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:19:31,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-26 02:19:31,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-08-26 02:19:31,840 INFO L87 Difference]: Start difference. First operand 105 states and 110 transitions. Second operand has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 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 02:19:32,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:19:32,299 INFO L93 Difference]: Finished difference Result 131 states and 137 transitions. [2021-08-26 02:19:32,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 02:19:32,299 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 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 02:19:32,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:19:32,300 INFO L225 Difference]: With dead ends: 131 [2021-08-26 02:19:32,300 INFO L226 Difference]: Without dead ends: 129 [2021-08-26 02:19:32,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 413.4ms TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2021-08-26 02:19:32,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-08-26 02:19:32,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 108. [2021-08-26 02:19:32,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 104 states have (on average 1.0865384615384615) internal successors, (113), 107 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:19:32,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 113 transitions. [2021-08-26 02:19:32,306 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 113 transitions. Word has length 44 [2021-08-26 02:19:32,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:19:32,306 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 113 transitions. [2021-08-26 02:19:32,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 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 02:19:32,306 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 113 transitions. [2021-08-26 02:19:32,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-26 02:19:32,307 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:19:32,307 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 02:19:32,330 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 02:19:32,520 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 02:19:32,521 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 02:19:32,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:19:32,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1057023877, now seen corresponding path program 1 times [2021-08-26 02:19:32,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:19:32,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919677920] [2021-08-26 02:19:32,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:32,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:19:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:32,877 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 02:19:32,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:19:32,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919677920] [2021-08-26 02:19:32,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919677920] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:32,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396898328] [2021-08-26 02:19:32,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:32,878 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:19:32,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:19:32,879 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 02:19:32,880 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 02:19:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:33,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 68 conjunts are in the unsatisfiable core [2021-08-26 02:19:33,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:19:33,795 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 02:19:33,832 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-08-26 02:19:33,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-08-26 02:19:33,854 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:19:33,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:19:33,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:19:33,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:33,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:19:33,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:33,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:19:34,197 INFO L354 Elim1Store]: treesize reduction 58, result has 20.5 percent of original size [2021-08-26 02:19:34,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 149 treesize of output 94 [2021-08-26 02:19:34,217 INFO L354 Elim1Store]: treesize reduction 82, result has 18.8 percent of original size [2021-08-26 02:19:34,217 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 4 case distinctions, treesize of input 113 treesize of output 83 [2021-08-26 02:19:34,241 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:19:34,241 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 77 treesize of output 92 [2021-08-26 02:19:34,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:34,456 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-08-26 02:19:34,457 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 80 [2021-08-26 02:19:34,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:34,462 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:19:34,462 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 2 case distinctions, treesize of input 80 treesize of output 70 [2021-08-26 02:19:34,747 INFO L354 Elim1Store]: treesize reduction 108, result has 16.9 percent of original size [2021-08-26 02:19:34,747 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 5 new quantified variables, introduced 7 case distinctions, treesize of input 227 treesize of output 114 [2021-08-26 02:19:34,781 INFO L354 Elim1Store]: treesize reduction 216, result has 13.6 percent of original size [2021-08-26 02:19:34,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 175 treesize of output 132 [2021-08-26 02:19:34,799 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-08-26 02:19:34,800 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 123 treesize of output 127 [2021-08-26 02:19:34,950 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-08-26 02:19:34,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 269 treesize of output 118 [2021-08-26 02:19:34,953 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 218 treesize of output 202 [2021-08-26 02:19:34,959 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-08-26 02:19:34,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 202 treesize of output 163 [2021-08-26 02:19:35,925 INFO L354 Elim1Store]: treesize reduction 154, result has 11.0 percent of original size [2021-08-26 02:19:35,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 216 treesize of output 113 [2021-08-26 02:19:35,967 INFO L354 Elim1Store]: treesize reduction 142, result has 4.7 percent of original size [2021-08-26 02:19:35,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 65 [2021-08-26 02:19:35,973 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 02:19:35,978 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 02:19:35,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396898328] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:35,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:19:35,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 17 [2021-08-26 02:19:35,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446685299] [2021-08-26 02:19:35,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-26 02:19:35,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:19:35,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-26 02:19:35,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-08-26 02:19:35,980 INFO L87 Difference]: Start difference. First operand 108 states and 113 transitions. Second operand has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 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 02:19:36,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:19:36,383 INFO L93 Difference]: Finished difference Result 129 states and 135 transitions. [2021-08-26 02:19:36,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 02:19:36,384 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 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 02:19:36,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:19:36,384 INFO L225 Difference]: With dead ends: 129 [2021-08-26 02:19:36,384 INFO L226 Difference]: Without dead ends: 127 [2021-08-26 02:19:36,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 434.4ms TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-08-26 02:19:36,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-08-26 02:19:36,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 111. [2021-08-26 02:19:36,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 107 states have (on average 1.0841121495327102) internal successors, (116), 110 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:19:36,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 116 transitions. [2021-08-26 02:19:36,390 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 116 transitions. Word has length 47 [2021-08-26 02:19:36,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:19:36,390 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 116 transitions. [2021-08-26 02:19:36,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 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 02:19:36,391 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 116 transitions. [2021-08-26 02:19:36,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-26 02:19:36,391 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:19:36,391 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 02:19:36,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-08-26 02:19:36,600 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 02:19:36,601 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 02:19:36,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:19:36,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1977153044, now seen corresponding path program 1 times [2021-08-26 02:19:36,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:19:36,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402800297] [2021-08-26 02:19:36,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:36,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:19:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:36,629 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 02:19:36,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:19:36,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402800297] [2021-08-26 02:19:36,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402800297] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:19:36,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:19:36,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 02:19:36,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084387066] [2021-08-26 02:19:36,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:19:36,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:19:36,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:19:36,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:19:36,632 INFO L87 Difference]: Start difference. First operand 111 states and 116 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 02:19:36,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:19:36,665 INFO L93 Difference]: Finished difference Result 133 states and 140 transitions. [2021-08-26 02:19:36,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 02:19:36,666 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 02:19:36,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:19:36,666 INFO L225 Difference]: With dead ends: 133 [2021-08-26 02:19:36,667 INFO L226 Difference]: Without dead ends: 122 [2021-08-26 02:19:36,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:19:36,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-08-26 02:19:36,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2021-08-26 02:19:36,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.0775862068965518) internal successors, (125), 119 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 02:19:36,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 125 transitions. [2021-08-26 02:19:36,674 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 125 transitions. Word has length 48 [2021-08-26 02:19:36,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:19:36,674 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 125 transitions. [2021-08-26 02:19:36,674 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 02:19:36,674 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 125 transitions. [2021-08-26 02:19:36,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-26 02:19:36,675 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:19:36,675 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 02:19:36,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-26 02:19:36,675 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 02:19:36,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:19:36,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1616749674, now seen corresponding path program 1 times [2021-08-26 02:19:36,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:19:36,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468834169] [2021-08-26 02:19:36,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:36,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:19:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:36,975 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 02:19:36,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:19:36,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468834169] [2021-08-26 02:19:36,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468834169] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:36,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189011896] [2021-08-26 02:19:36,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:36,976 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:19:36,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:19:36,977 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 02:19:36,979 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 02:19:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:38,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 42 conjunts are in the unsatisfiable core [2021-08-26 02:19:38,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:19:38,123 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 02:19:38,182 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:19:38,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:19:38,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:19:38,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:19:38,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:38,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:19:38,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:38,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:19:38,455 INFO L354 Elim1Store]: treesize reduction 58, result has 20.5 percent of original size [2021-08-26 02:19:38,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 143 treesize of output 88 [2021-08-26 02:19:38,476 INFO L354 Elim1Store]: treesize reduction 82, result has 18.8 percent of original size [2021-08-26 02:19:38,476 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 4 case distinctions, treesize of input 107 treesize of output 77 [2021-08-26 02:19:38,487 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-08-26 02:19:38,487 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 71 treesize of output 73 [2021-08-26 02:19:38,583 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:19:38,584 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 182 treesize of output 97 [2021-08-26 02:19:38,586 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 143 treesize of output 131 [2021-08-26 02:19:38,589 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-08-26 02:19:38,590 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 3 case distinctions, treesize of input 131 treesize of output 101 [2021-08-26 02:19:39,539 INFO L354 Elim1Store]: treesize reduction 61, result has 11.6 percent of original size [2021-08-26 02:19:39,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 122 treesize of output 67 [2021-08-26 02:19:39,552 INFO L354 Elim1Store]: treesize reduction 54, result has 5.3 percent of original size [2021-08-26 02:19:39,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 38 [2021-08-26 02:19:39,604 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 02:19:39,626 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 02:19:39,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189011896] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:39,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:19:39,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 17 [2021-08-26 02:19:39,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496177061] [2021-08-26 02:19:39,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-26 02:19:39,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:19:39,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-26 02:19:39,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-08-26 02:19:39,628 INFO L87 Difference]: Start difference. First operand 120 states and 125 transitions. Second operand has 17 states, 17 states have (on average 5.352941176470588) internal successors, (91), 17 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:19:48,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:19:48,324 INFO L93 Difference]: Finished difference Result 134 states and 138 transitions. [2021-08-26 02:19:48,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 02:19:48,324 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.352941176470588) internal successors, (91), 17 states have internal predecessors, (91), 0 states have call successors, (0), 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 02:19:48,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:19:48,325 INFO L225 Difference]: With dead ends: 134 [2021-08-26 02:19:48,325 INFO L226 Difference]: Without dead ends: 132 [2021-08-26 02:19:48,325 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 538.3ms TimeCoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2021-08-26 02:19:48,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-08-26 02:19:48,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 128. [2021-08-26 02:19:48,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 124 states have (on average 1.0725806451612903) internal successors, (133), 127 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 02:19:48,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 133 transitions. [2021-08-26 02:19:48,333 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 133 transitions. Word has length 48 [2021-08-26 02:19:48,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:19:48,334 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 133 transitions. [2021-08-26 02:19:48,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.352941176470588) internal successors, (91), 17 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:19:48,334 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 133 transitions. [2021-08-26 02:19:48,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-26 02:19:48,334 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:19:48,335 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] [2021-08-26 02:19:48,364 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 02:19:48,557 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 02:19:48,558 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:19:48,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:19:48,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1696487156, now seen corresponding path program 2 times [2021-08-26 02:19:48,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:19:48,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963659772] [2021-08-26 02:19:48,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:19:48,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:19:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:19:48,858 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 02:19:48,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:19:48,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963659772] [2021-08-26 02:19:48,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963659772] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:48,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909779981] [2021-08-26 02:19:48,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 02:19:48,859 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:19:48,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:19:48,860 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 02:19:48,861 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 02:19:50,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 02:19:50,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:19:50,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 57 conjunts are in the unsatisfiable core [2021-08-26 02:19:50,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:19:50,065 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 02:19:50,113 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:19:50,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:19:50,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:19:50,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:19:50,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:50,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:19:50,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:50,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:19:50,470 INFO L354 Elim1Store]: treesize reduction 78, result has 16.1 percent of original size [2021-08-26 02:19:50,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 149 treesize of output 94 [2021-08-26 02:19:50,501 INFO L354 Elim1Store]: treesize reduction 102, result has 15.7 percent of original size [2021-08-26 02:19:50,501 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 113 treesize of output 83 [2021-08-26 02:19:50,531 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:19:50,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 77 treesize of output 92 [2021-08-26 02:19:50,723 INFO L354 Elim1Store]: treesize reduction 100, result has 16.0 percent of original size [2021-08-26 02:19:50,723 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 4 case distinctions, treesize of input 99 treesize of output 89 [2021-08-26 02:19:50,741 INFO L354 Elim1Store]: treesize reduction 80, result has 15.8 percent of original size [2021-08-26 02:19:50,741 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 80 treesize of output 61 [2021-08-26 02:19:51,056 INFO L354 Elim1Store]: treesize reduction 140, result has 13.6 percent of original size [2021-08-26 02:19:51,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 245 treesize of output 124 [2021-08-26 02:19:51,100 INFO L354 Elim1Store]: treesize reduction 248, result has 12.1 percent of original size [2021-08-26 02:19:51,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 193 treesize of output 150 [2021-08-26 02:19:51,148 INFO L354 Elim1Store]: treesize reduction 146, result has 23.2 percent of original size [2021-08-26 02:19:51,148 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 141 treesize of output 163 [2021-08-26 02:19:51,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:51,440 INFO L354 Elim1Store]: treesize reduction 87, result has 7.4 percent of original size [2021-08-26 02:19:51,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 175 treesize of output 114 [2021-08-26 02:19:51,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:19:51,459 INFO L354 Elim1Store]: treesize reduction 147, result has 9.3 percent of original size [2021-08-26 02:19:51,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 156 treesize of output 149 [2021-08-26 02:19:51,906 INFO L354 Elim1Store]: treesize reduction 198, result has 12.8 percent of original size [2021-08-26 02:19:51,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 351 treesize of output 148 [2021-08-26 02:19:51,991 INFO L354 Elim1Store]: treesize reduction 462, result has 10.3 percent of original size [2021-08-26 02:19:51,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 283 treesize of output 227 [2021-08-26 02:19:52,023 INFO L354 Elim1Store]: treesize reduction 144, result has 18.6 percent of original size [2021-08-26 02:19:52,024 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 215 treesize of output 213 [2021-08-26 02:19:52,276 INFO L354 Elim1Store]: treesize reduction 125, result has 5.3 percent of original size [2021-08-26 02:19:52,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 11 case distinctions, treesize of input 369 treesize of output 140 [2021-08-26 02:19:52,300 INFO L354 Elim1Store]: treesize reduction 357, result has 4.0 percent of original size [2021-08-26 02:19:52,301 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 11 case distinctions, treesize of input 306 treesize of output 258 [2021-08-26 02:19:54,026 INFO L354 Elim1Store]: treesize reduction 149, result has 13.9 percent of original size [2021-08-26 02:19:54,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 246 treesize of output 105 [2021-08-26 02:19:54,035 INFO L354 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2021-08-26 02:19:54,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 84 treesize of output 64 [2021-08-26 02:19:54,042 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 02:19:54,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909779981] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:19:54,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:19:54,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 21 [2021-08-26 02:19:54,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850120645] [2021-08-26 02:19:54,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-26 02:19:54,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:19:54,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-26 02:19:54,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=348, Unknown=1, NotChecked=0, Total=420 [2021-08-26 02:19:54,043 INFO L87 Difference]: Start difference. First operand 128 states and 133 transitions. Second operand has 21 states, 21 states have (on average 4.619047619047619) internal successors, (97), 21 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 02:20:15,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:20:15,847 INFO L93 Difference]: Finished difference Result 185 states and 194 transitions. [2021-08-26 02:20:15,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-26 02:20:15,848 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.619047619047619) internal successors, (97), 21 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) Word has length 50 [2021-08-26 02:20:15,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:20:15,848 INFO L225 Difference]: With dead ends: 185 [2021-08-26 02:20:15,848 INFO L226 Difference]: Without dead ends: 183 [2021-08-26 02:20:15,849 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 2322.3ms TimeCoverageRelationStatistics Valid=137, Invalid=731, Unknown=2, NotChecked=0, Total=870 [2021-08-26 02:20:15,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-08-26 02:20:15,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 126. [2021-08-26 02:20:15,856 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 02:20:15,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 131 transitions. [2021-08-26 02:20:15,857 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 131 transitions. Word has length 50 [2021-08-26 02:20:15,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:20:15,857 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 131 transitions. [2021-08-26 02:20:15,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.619047619047619) internal successors, (97), 21 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 02:20:15,857 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 131 transitions. [2021-08-26 02:20:15,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-26 02:20:15,858 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:20:15,858 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 02:20:15,880 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 02:20:16,058 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 02:20:16,059 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:20:16,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:20:16,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1164547354, now seen corresponding path program 2 times [2021-08-26 02:20:16,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:20:16,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431878694] [2021-08-26 02:20:16,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:20:16,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:20:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:20:16,425 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 02:20:16,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:20:16,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431878694] [2021-08-26 02:20:16,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431878694] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:20:16,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437710100] [2021-08-26 02:20:16,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 02:20:16,426 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:20:16,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:20:16,427 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 02:20:16,428 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 02:20:17,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 02:20:17,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:20:17,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 66 conjunts are in the unsatisfiable core [2021-08-26 02:20:17,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:20:17,963 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 02:20:18,012 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-08-26 02:20:18,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-08-26 02:20:18,029 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:20:18,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:20:18,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:20:18,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:18,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:20:18,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:18,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:20:18,356 INFO L354 Elim1Store]: treesize reduction 58, result has 20.5 percent of original size [2021-08-26 02:20:18,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 149 treesize of output 94 [2021-08-26 02:20:18,383 INFO L354 Elim1Store]: treesize reduction 82, result has 18.8 percent of original size [2021-08-26 02:20:18,383 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 4 case distinctions, treesize of input 113 treesize of output 83 [2021-08-26 02:20:18,413 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:20:18,414 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 77 treesize of output 92 [2021-08-26 02:20:18,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:18,627 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-08-26 02:20:18,627 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 80 [2021-08-26 02:20:18,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:18,636 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:20:18,636 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 2 case distinctions, treesize of input 80 treesize of output 70 [2021-08-26 02:20:18,986 INFO L354 Elim1Store]: treesize reduction 108, result has 16.9 percent of original size [2021-08-26 02:20:18,987 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 5 new quantified variables, introduced 7 case distinctions, treesize of input 233 treesize of output 120 [2021-08-26 02:20:19,030 INFO L354 Elim1Store]: treesize reduction 216, result has 13.6 percent of original size [2021-08-26 02:20:19,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 181 treesize of output 138 [2021-08-26 02:20:19,074 INFO L354 Elim1Store]: treesize reduction 150, result has 21.1 percent of original size [2021-08-26 02:20:19,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 129 treesize of output 147 [2021-08-26 02:20:19,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:19,292 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-08-26 02:20:19,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 131 treesize of output 124 [2021-08-26 02:20:19,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:19,299 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-08-26 02:20:19,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 112 treesize of output 83 [2021-08-26 02:20:19,707 INFO L354 Elim1Store]: treesize reduction 210, result has 12.1 percent of original size [2021-08-26 02:20:19,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 323 treesize of output 140 [2021-08-26 02:20:19,768 INFO L354 Elim1Store]: treesize reduction 474, result has 10.1 percent of original size [2021-08-26 02:20:19,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 255 treesize of output 199 [2021-08-26 02:20:19,794 INFO L354 Elim1Store]: treesize reduction 136, result has 23.2 percent of original size [2021-08-26 02:20:19,794 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 187 treesize of output 193 [2021-08-26 02:20:20,044 INFO L354 Elim1Store]: treesize reduction 258, result has 12.2 percent of original size [2021-08-26 02:20:20,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 15 case distinctions, treesize of input 353 treesize of output 140 [2021-08-26 02:20:20,098 INFO L354 Elim1Store]: treesize reduction 714, result has 9.6 percent of original size [2021-08-26 02:20:20,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 case distinctions, treesize of input 286 treesize of output 234 [2021-08-26 02:20:21,150 INFO L354 Elim1Store]: treesize reduction 218, result has 12.4 percent of original size [2021-08-26 02:20:21,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 13 new quantified variables, introduced 21 case distinctions, treesize of input 250 treesize of output 118 [2021-08-26 02:20:21,160 INFO L354 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2021-08-26 02:20:21,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 80 treesize of output 60 [2021-08-26 02:20:21,169 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 02:20:21,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437710100] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:20:21,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:20:21,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-08-26 02:20:21,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692295273] [2021-08-26 02:20:21,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-26 02:20:21,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:20:21,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-26 02:20:21,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-08-26 02:20:21,172 INFO L87 Difference]: Start difference. First operand 126 states and 131 transitions. Second operand has 19 states, 19 states have (on average 5.421052631578948) internal successors, (103), 19 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 02:20:21,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:20:21,730 INFO L93 Difference]: Finished difference Result 194 states and 203 transitions. [2021-08-26 02:20:21,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-26 02:20:21,731 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.421052631578948) internal successors, (103), 19 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 02:20:21,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:20:21,732 INFO L225 Difference]: With dead ends: 194 [2021-08-26 02:20:21,732 INFO L226 Difference]: Without dead ends: 192 [2021-08-26 02:20:21,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 565.3ms TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2021-08-26 02:20:21,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-08-26 02:20:21,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 150. [2021-08-26 02:20:21,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 147 states have (on average 1.0612244897959184) internal successors, (156), 149 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:20:21,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 156 transitions. [2021-08-26 02:20:21,742 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 156 transitions. Word has length 53 [2021-08-26 02:20:21,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:20:21,742 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 156 transitions. [2021-08-26 02:20:21,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.421052631578948) internal successors, (103), 19 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 02:20:21,742 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 156 transitions. [2021-08-26 02:20:21,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-26 02:20:21,743 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:20:21,743 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 02:20:21,774 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 02:20:21,968 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 02:20:21,969 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 02:20:21,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:20:21,969 INFO L82 PathProgramCache]: Analyzing trace with hash 53222075, now seen corresponding path program 1 times [2021-08-26 02:20:21,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:20:21,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56104941] [2021-08-26 02:20:21,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:20:21,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:20:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:20:22,312 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 02:20:22,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:20:22,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56104941] [2021-08-26 02:20:22,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56104941] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:20:22,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431707179] [2021-08-26 02:20:22,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:20:22,313 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:20:22,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:20:22,314 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 02:20:22,315 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 02:20:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:20:23,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 45 conjunts are in the unsatisfiable core [2021-08-26 02:20:23,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:20:23,991 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 02:20:24,031 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:20:24,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:20:24,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:20:24,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:20:24,110 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 02:20:24,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:24,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:20:24,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:24,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:20:24,406 INFO L354 Elim1Store]: treesize reduction 78, result has 16.1 percent of original size [2021-08-26 02:20:24,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 202 treesize of output 131 [2021-08-26 02:20:24,432 INFO L354 Elim1Store]: treesize reduction 102, result has 15.7 percent of original size [2021-08-26 02:20:24,432 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 4 case distinctions, treesize of input 166 treesize of output 136 [2021-08-26 02:20:24,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 106 [2021-08-26 02:20:24,444 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-08-26 02:20:24,444 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 103 treesize of output 91 [2021-08-26 02:20:24,466 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:20:24,467 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 88 treesize of output 103 [2021-08-26 02:20:24,610 INFO L354 Elim1Store]: treesize reduction 80, result has 15.8 percent of original size [2021-08-26 02:20:24,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 123 treesize of output 100 [2021-08-26 02:20:24,641 INFO L354 Elim1Store]: treesize reduction 100, result has 16.0 percent of original size [2021-08-26 02:20:24,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 104 treesize of output 94 [2021-08-26 02:20:24,651 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-08-26 02:20:24,651 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 85 treesize of output 84 [2021-08-26 02:20:25,009 INFO L354 Elim1Store]: treesize reduction 164, result has 11.8 percent of original size [2021-08-26 02:20:25,009 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 5 new quantified variables, introduced 7 case distinctions, treesize of input 309 treesize of output 160 [2021-08-26 02:20:25,060 INFO L354 Elim1Store]: treesize reduction 272, result has 11.1 percent of original size [2021-08-26 02:20:25,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 257 treesize of output 214 [2021-08-26 02:20:25,118 INFO L354 Elim1Store]: treesize reduction 284, result has 13.4 percent of original size [2021-08-26 02:20:25,118 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 4 case distinctions, treesize of input 214 treesize of output 172 [2021-08-26 02:20:25,144 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-08-26 02:20:25,145 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 151 treesize of output 155 [2021-08-26 02:20:25,392 INFO L354 Elim1Store]: treesize reduction 196, result has 12.9 percent of original size [2021-08-26 02:20:25,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 335 treesize of output 152 [2021-08-26 02:20:25,433 INFO L354 Elim1Store]: treesize reduction 436, result has 10.8 percent of original size [2021-08-26 02:20:25,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 280 treesize of output 237 [2021-08-26 02:20:25,469 INFO L354 Elim1Store]: treesize reduction 172, result has 14.4 percent of original size [2021-08-26 02:20:25,470 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 225 treesize of output 215 [2021-08-26 02:20:27,130 INFO L354 Elim1Store]: treesize reduction 65, result has 5.8 percent of original size [2021-08-26 02:20:27,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 223 treesize of output 100 [2021-08-26 02:20:27,140 INFO L354 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2021-08-26 02:20:27,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 85 treesize of output 65 [2021-08-26 02:20:27,452 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-08-26 02:20:27,453 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 02:20:27,465 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 02:20:27,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431707179] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:20:27,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:20:27,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-08-26 02:20:27,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745504126] [2021-08-26 02:20:27,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-26 02:20:27,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:20:27,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-26 02:20:27,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-08-26 02:20:27,467 INFO L87 Difference]: Start difference. First operand 150 states and 156 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 02:20:30,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:20:30,486 INFO L93 Difference]: Finished difference Result 183 states and 193 transitions. [2021-08-26 02:20:30,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-26 02:20:30,486 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 02:20:30,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:20:30,487 INFO L225 Difference]: With dead ends: 183 [2021-08-26 02:20:30,487 INFO L226 Difference]: Without dead ends: 181 [2021-08-26 02:20:30,487 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 857.5ms TimeCoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2021-08-26 02:20:30,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-08-26 02:20:30,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 155. [2021-08-26 02:20:30,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 152 states have (on average 1.0657894736842106) internal successors, (162), 154 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:20:30,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 162 transitions. [2021-08-26 02:20:30,500 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 162 transitions. Word has length 55 [2021-08-26 02:20:30,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:20:30,500 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 162 transitions. [2021-08-26 02:20:30,501 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 02:20:30,501 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 162 transitions. [2021-08-26 02:20:30,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-26 02:20:30,501 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:20:30,502 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 02:20:30,533 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 02:20:30,724 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 02:20:30,725 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:20:30,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:20:30,725 INFO L82 PathProgramCache]: Analyzing trace with hash 412502626, now seen corresponding path program 2 times [2021-08-26 02:20:30,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:20:30,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513689111] [2021-08-26 02:20:30,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:20:30,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:20:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:20:31,038 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 02:20:31,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:20:31,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513689111] [2021-08-26 02:20:31,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513689111] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:20:31,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522925342] [2021-08-26 02:20:31,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 02:20:31,040 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:20:31,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:20:31,041 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 02:20:31,043 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 02:20:32,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 02:20:32,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:20:32,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 42 conjunts are in the unsatisfiable core [2021-08-26 02:20:32,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:20:32,999 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 02:20:33,058 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:20:33,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:20:33,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:20:33,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:20:33,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:33,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:20:33,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:33,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:20:33,345 INFO L354 Elim1Store]: treesize reduction 58, result has 20.5 percent of original size [2021-08-26 02:20:33,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 143 treesize of output 88 [2021-08-26 02:20:33,366 INFO L354 Elim1Store]: treesize reduction 82, result has 18.8 percent of original size [2021-08-26 02:20:33,366 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 4 case distinctions, treesize of input 107 treesize of output 77 [2021-08-26 02:20:33,378 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-08-26 02:20:33,378 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 71 treesize of output 73 [2021-08-26 02:20:33,481 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:20:33,481 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 155 treesize of output 86 [2021-08-26 02:20:33,485 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-08-26 02:20:33,485 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 3 case distinctions, treesize of input 116 treesize of output 86 [2021-08-26 02:20:34,481 INFO L354 Elim1Store]: treesize reduction 110, result has 9.1 percent of original size [2021-08-26 02:20:34,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 139 treesize of output 81 [2021-08-26 02:20:34,506 INFO L354 Elim1Store]: treesize reduction 94, result has 6.9 percent of original size [2021-08-26 02:20:34,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 52 treesize of output 40 [2021-08-26 02:20:34,527 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 02:20:34,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522925342] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:20:34,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:20:34,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 19 [2021-08-26 02:20:34,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709196959] [2021-08-26 02:20:34,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-26 02:20:34,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:20:34,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-26 02:20:34,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-08-26 02:20:34,529 INFO L87 Difference]: Start difference. First operand 155 states and 162 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 02:20:44,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:20:44,526 INFO L93 Difference]: Finished difference Result 161 states and 167 transitions. [2021-08-26 02:20:44,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 02:20:44,530 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 02:20:44,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:20:44,530 INFO L225 Difference]: With dead ends: 161 [2021-08-26 02:20:44,531 INFO L226 Difference]: Without dead ends: 119 [2021-08-26 02:20:44,531 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 514.8ms TimeCoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2021-08-26 02:20:44,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-08-26 02:20:44,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-08-26 02:20:44,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 116 states have (on average 1.0689655172413792) internal successors, (124), 118 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:20:44,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 124 transitions. [2021-08-26 02:20:44,538 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 124 transitions. Word has length 56 [2021-08-26 02:20:44,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:20:44,538 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 124 transitions. [2021-08-26 02:20:44,539 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 02:20:44,539 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 124 transitions. [2021-08-26 02:20:44,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-26 02:20:44,539 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:20:44,539 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 02:20:44,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-08-26 02:20:44,756 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 02:20:44,757 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:20:44,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:20:44,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1719756958, now seen corresponding path program 2 times [2021-08-26 02:20:44,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:20:44,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964345219] [2021-08-26 02:20:44,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:20:44,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:20:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:20:45,378 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 02:20:45,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:20:45,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964345219] [2021-08-26 02:20:45,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964345219] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:20:45,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214092175] [2021-08-26 02:20:45,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 02:20:45,378 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:20:45,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:20:45,379 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:20:45,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-26 02:20:47,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 02:20:47,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:20:47,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 75 conjunts are in the unsatisfiable core [2021-08-26 02:20:47,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:20:47,436 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 02:20:47,472 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:20:47,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:20:47,496 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:20:47,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:20:47,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:20:47,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:47,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:20:47,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:47,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:20:47,850 INFO L354 Elim1Store]: treesize reduction 58, result has 20.5 percent of original size [2021-08-26 02:20:47,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 149 treesize of output 94 [2021-08-26 02:20:47,878 INFO L354 Elim1Store]: treesize reduction 82, result has 18.8 percent of original size [2021-08-26 02:20:47,878 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 4 case distinctions, treesize of input 113 treesize of output 83 [2021-08-26 02:20:47,902 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:20:47,902 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 77 treesize of output 92 [2021-08-26 02:20:48,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:48,072 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-08-26 02:20:48,073 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 80 [2021-08-26 02:20:48,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:48,078 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:20:48,079 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 2 case distinctions, treesize of input 80 treesize of output 70 [2021-08-26 02:20:48,368 INFO L354 Elim1Store]: treesize reduction 108, result has 16.9 percent of original size [2021-08-26 02:20:48,368 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 5 new quantified variables, introduced 7 case distinctions, treesize of input 233 treesize of output 120 [2021-08-26 02:20:48,410 INFO L354 Elim1Store]: treesize reduction 216, result has 13.6 percent of original size [2021-08-26 02:20:48,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 181 treesize of output 138 [2021-08-26 02:20:48,449 INFO L354 Elim1Store]: treesize reduction 138, result has 27.4 percent of original size [2021-08-26 02:20:48,449 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 129 treesize of output 159 [2021-08-26 02:20:48,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:48,681 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-08-26 02:20:48,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 143 treesize of output 136 [2021-08-26 02:20:48,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:48,688 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-08-26 02:20:48,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 124 treesize of output 87 [2021-08-26 02:20:48,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 02:20:49,171 INFO L354 Elim1Store]: treesize reduction 166, result has 14.9 percent of original size [2021-08-26 02:20:49,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 416 treesize of output 177 [2021-08-26 02:20:49,228 INFO L354 Elim1Store]: treesize reduction 430, result has 11.0 percent of original size [2021-08-26 02:20:49,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 348 treesize of output 292 [2021-08-26 02:20:49,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 280 treesize of output 232 [2021-08-26 02:20:49,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 229 treesize of output 217 [2021-08-26 02:20:49,263 INFO L354 Elim1Store]: treesize reduction 136, result has 23.2 percent of original size [2021-08-26 02:20:49,263 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 214 treesize of output 220 [2021-08-26 02:20:49,479 INFO L354 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2021-08-26 02:20:49,480 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 391 treesize of output 146 [2021-08-26 02:20:49,485 INFO L354 Elim1Store]: treesize reduction 240, result has 0.4 percent of original size [2021-08-26 02:20:49,486 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 10 case distinctions, treesize of input 328 treesize of output 280 [2021-08-26 02:20:49,495 INFO L354 Elim1Store]: treesize reduction 85, result has 18.3 percent of original size [2021-08-26 02:20:49,495 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 265 treesize of output 248 [2021-08-26 02:20:50,812 INFO L354 Elim1Store]: treesize reduction 198, result has 15.0 percent of original size [2021-08-26 02:20:50,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 13 new quantified variables, introduced 21 case distinctions, treesize of input 298 treesize of output 150 [2021-08-26 02:20:50,861 INFO L354 Elim1Store]: treesize reduction 198, result has 3.4 percent of original size [2021-08-26 02:20:50,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 115 treesize of output 95 [2021-08-26 02:20:50,871 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:20:50,872 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 02:20:50,877 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 02:20:50,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214092175] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:20:50,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:20:50,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2021-08-26 02:20:50,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112718433] [2021-08-26 02:20:50,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-08-26 02:20:50,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:20:50,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-08-26 02:20:50,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2021-08-26 02:20:50,879 INFO L87 Difference]: Start difference. First operand 119 states and 124 transitions. Second operand has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 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 02:20:51,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:20:51,753 INFO L93 Difference]: Finished difference Result 163 states and 172 transitions. [2021-08-26 02:20:51,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-26 02:20:51,753 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 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 02:20:51,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:20:51,754 INFO L225 Difference]: With dead ends: 163 [2021-08-26 02:20:51,754 INFO L226 Difference]: Without dead ends: 161 [2021-08-26 02:20:51,754 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1077.4ms TimeCoverageRelationStatistics Valid=143, Invalid=787, Unknown=0, NotChecked=0, Total=930 [2021-08-26 02:20:51,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-08-26 02:20:51,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 104. [2021-08-26 02:20:51,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 101 states have (on average 1.0792079207920793) internal successors, (109), 103 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:20:51,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 109 transitions. [2021-08-26 02:20:51,759 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 109 transitions. Word has length 56 [2021-08-26 02:20:51,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:20:51,760 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 109 transitions. [2021-08-26 02:20:51,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 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 02:20:51,760 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 109 transitions. [2021-08-26 02:20:51,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-26 02:20:51,760 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:20:51,760 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] [2021-08-26 02:20:51,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-26 02:20:51,976 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,SelfDestructingSolverStorable27 [2021-08-26 02:20:51,977 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:20:51,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:20:51,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1886254399, now seen corresponding path program 3 times [2021-08-26 02:20:51,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:20:51,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306962141] [2021-08-26 02:20:51,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:20:51,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:20:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:20:52,407 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 02:20:52,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:20:52,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306962141] [2021-08-26 02:20:52,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306962141] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:20:52,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170598377] [2021-08-26 02:20:52,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 02:20:52,407 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:20:52,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:20:52,408 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:20:52,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-08-26 02:20:55,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-08-26 02:20:55,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:20:55,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 82 conjunts are in the unsatisfiable core [2021-08-26 02:20:55,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:20:55,156 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 02:20:55,203 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-08-26 02:20:55,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-08-26 02:20:55,224 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:20:55,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:20:55,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:20:55,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:55,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:20:55,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:55,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:20:55,537 INFO L354 Elim1Store]: treesize reduction 58, result has 20.5 percent of original size [2021-08-26 02:20:55,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 149 treesize of output 94 [2021-08-26 02:20:55,566 INFO L354 Elim1Store]: treesize reduction 82, result has 18.8 percent of original size [2021-08-26 02:20:55,566 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 4 case distinctions, treesize of input 113 treesize of output 83 [2021-08-26 02:20:55,590 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:20:55,590 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 77 treesize of output 92 [2021-08-26 02:20:55,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:55,760 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-08-26 02:20:55,761 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 80 [2021-08-26 02:20:55,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:55,768 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:20:55,769 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 2 case distinctions, treesize of input 80 treesize of output 70 [2021-08-26 02:20:56,047 INFO L354 Elim1Store]: treesize reduction 108, result has 16.9 percent of original size [2021-08-26 02:20:56,047 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 5 new quantified variables, introduced 7 case distinctions, treesize of input 233 treesize of output 120 [2021-08-26 02:20:56,082 INFO L354 Elim1Store]: treesize reduction 216, result has 13.6 percent of original size [2021-08-26 02:20:56,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 181 treesize of output 138 [2021-08-26 02:20:56,116 INFO L354 Elim1Store]: treesize reduction 150, result has 21.1 percent of original size [2021-08-26 02:20:56,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 129 treesize of output 147 [2021-08-26 02:20:56,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:56,327 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-08-26 02:20:56,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 131 treesize of output 102 [2021-08-26 02:20:56,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:56,333 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-08-26 02:20:56,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 112 treesize of output 105 [2021-08-26 02:20:56,720 INFO L354 Elim1Store]: treesize reduction 166, result has 14.9 percent of original size [2021-08-26 02:20:56,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 329 treesize of output 146 [2021-08-26 02:20:56,772 INFO L354 Elim1Store]: treesize reduction 430, result has 11.0 percent of original size [2021-08-26 02:20:56,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 261 treesize of output 205 [2021-08-26 02:20:56,818 INFO L354 Elim1Store]: treesize reduction 292, result has 16.3 percent of original size [2021-08-26 02:20:56,819 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 193 treesize of output 214 [2021-08-26 02:20:57,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:57,060 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-08-26 02:20:57,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 9 case distinctions, treesize of input 187 treesize of output 128 [2021-08-26 02:20:57,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:20:57,067 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-08-26 02:20:57,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 168 treesize of output 164 [2021-08-26 02:20:57,531 INFO L354 Elim1Store]: treesize reduction 232, result has 13.4 percent of original size [2021-08-26 02:20:57,531 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 9 new quantified variables, introduced 16 case distinctions, treesize of input 411 treesize of output 162 [2021-08-26 02:20:57,614 INFO L354 Elim1Store]: treesize reduction 736, result has 9.4 percent of original size [2021-08-26 02:20:57,614 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 16 case distinctions, treesize of input 327 treesize of output 258 [2021-08-26 02:20:57,656 INFO L354 Elim1Store]: treesize reduction 292, result has 9.0 percent of original size [2021-08-26 02:20:57,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 243 treesize of output 219 [2021-08-26 02:20:57,866 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-08-26 02:20:57,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 408 treesize of output 149 [2021-08-26 02:20:57,872 INFO L354 Elim1Store]: treesize reduction 420, result has 0.2 percent of original size [2021-08-26 02:20:57,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 333 treesize of output 276 [2021-08-26 02:20:59,163 INFO L354 Elim1Store]: treesize reduction 238, result has 20.9 percent of original size [2021-08-26 02:20:59,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 15 new quantified variables, introduced 28 case distinctions, treesize of input 261 treesize of output 160 [2021-08-26 02:20:59,172 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-08-26 02:20:59,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 119 treesize of output 95 [2021-08-26 02:20:59,181 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 02:20:59,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170598377] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:20:59,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:20:59,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16] total 25 [2021-08-26 02:20:59,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547806120] [2021-08-26 02:20:59,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-26 02:20:59,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:20:59,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-26 02:20:59,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2021-08-26 02:20:59,182 INFO L87 Difference]: Start difference. First operand 104 states and 109 transitions. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 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 02:21:00,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:21:00,316 INFO L93 Difference]: Finished difference Result 181 states and 191 transitions. [2021-08-26 02:21:00,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-26 02:21:00,328 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 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 62 [2021-08-26 02:21:00,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:21:00,329 INFO L225 Difference]: With dead ends: 181 [2021-08-26 02:21:00,329 INFO L226 Difference]: Without dead ends: 179 [2021-08-26 02:21:00,330 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1304.9ms TimeCoverageRelationStatistics Valid=172, Invalid=1018, Unknown=0, NotChecked=0, Total=1190 [2021-08-26 02:21:00,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-08-26 02:21:00,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 102. [2021-08-26 02:21:00,338 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 02:21:00,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 107 transitions. [2021-08-26 02:21:00,338 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 107 transitions. Word has length 62 [2021-08-26 02:21:00,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:21:00,338 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 107 transitions. [2021-08-26 02:21:00,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 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 02:21:00,339 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 107 transitions. [2021-08-26 02:21:00,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-08-26 02:21:00,339 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:21:00,340 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 02:21:00,375 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 02:21:00,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-08-26 02:21:00,561 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:21:00,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:21:00,561 INFO L82 PathProgramCache]: Analyzing trace with hash 906735365, now seen corresponding path program 1 times [2021-08-26 02:21:00,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:21:00,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433352935] [2021-08-26 02:21:00,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:21:00,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:21:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:21:00,609 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 02:21:00,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:21:00,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433352935] [2021-08-26 02:21:00,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433352935] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:21:00,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:21:00,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 02:21:00,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106935231] [2021-08-26 02:21:00,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:21:00,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:21:00,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:21:00,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:21:00,612 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 02:21:00,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:21:00,644 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2021-08-26 02:21:00,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 02:21:00,645 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 02:21:00,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:21:00,645 INFO L225 Difference]: With dead ends: 113 [2021-08-26 02:21:00,645 INFO L226 Difference]: Without dead ends: 102 [2021-08-26 02:21:00,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:21:00,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-08-26 02:21:00,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-08-26 02:21:00,653 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 02:21:00,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 105 transitions. [2021-08-26 02:21:00,654 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 105 transitions. Word has length 63 [2021-08-26 02:21:00,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:21:00,654 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 105 transitions. [2021-08-26 02:21:00,654 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 02:21:00,654 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 105 transitions. [2021-08-26 02:21:00,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-08-26 02:21:00,655 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:21:00,655 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 02:21:00,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-26 02:21:00,656 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 02:21:00,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:21:00,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1607799943, now seen corresponding path program 1 times [2021-08-26 02:21:00,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:21:00,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242241755] [2021-08-26 02:21:00,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:21:00,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:21:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:21:01,124 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 02:21:01,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:21:01,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242241755] [2021-08-26 02:21:01,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242241755] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:21:01,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280583615] [2021-08-26 02:21:01,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:21:01,125 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:21:01,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:21:01,126 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 02:21:01,127 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 02:21:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:21:03,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 63 conjunts are in the unsatisfiable core [2021-08-26 02:21:03,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:21:03,762 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 02:21:03,793 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:21:03,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:21:03,808 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:21:03,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:21:03,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:21:03,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:21:03,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:21:03,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:21:03,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:21:04,124 INFO L354 Elim1Store]: treesize reduction 58, result has 20.5 percent of original size [2021-08-26 02:21:04,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 149 treesize of output 94 [2021-08-26 02:21:04,154 INFO L354 Elim1Store]: treesize reduction 82, result has 18.8 percent of original size [2021-08-26 02:21:04,154 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 4 case distinctions, treesize of input 113 treesize of output 83 [2021-08-26 02:21:04,178 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:21:04,178 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 77 treesize of output 92 [2021-08-26 02:21:04,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:21:04,348 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-08-26 02:21:04,348 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 80 [2021-08-26 02:21:04,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:21:04,354 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:21:04,354 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 2 case distinctions, treesize of input 80 treesize of output 70 [2021-08-26 02:21:04,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 02:21:04,719 INFO L354 Elim1Store]: treesize reduction 140, result has 13.6 percent of original size [2021-08-26 02:21:04,720 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 5 new quantified variables, introduced 7 case distinctions, treesize of input 296 treesize of output 151 [2021-08-26 02:21:04,763 INFO L354 Elim1Store]: treesize reduction 248, result has 12.1 percent of original size [2021-08-26 02:21:04,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 244 treesize of output 201 [2021-08-26 02:21:04,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 156 [2021-08-26 02:21:04,785 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-08-26 02:21:04,785 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 153 treesize of output 157 [2021-08-26 02:21:04,795 INFO L354 Elim1Store]: treesize reduction 53, result has 22.1 percent of original size [2021-08-26 02:21:04,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 133 [2021-08-26 02:21:05,006 INFO L354 Elim1Store]: treesize reduction 188, result has 13.4 percent of original size [2021-08-26 02:21:05,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 294 treesize of output 135 [2021-08-26 02:21:05,018 INFO L354 Elim1Store]: treesize reduction 77, result has 16.3 percent of original size [2021-08-26 02:21:05,018 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 239 treesize of output 226 [2021-08-26 02:21:05,056 INFO L354 Elim1Store]: treesize reduction 428, result has 11.0 percent of original size [2021-08-26 02:21:05,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 223 treesize of output 180 [2021-08-26 02:21:06,653 INFO L354 Elim1Store]: treesize reduction 105, result has 13.2 percent of original size [2021-08-26 02:21:06,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 198 treesize of output 98 [2021-08-26 02:21:06,672 INFO L354 Elim1Store]: treesize reduction 102, result has 2.9 percent of original size [2021-08-26 02:21:06,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 80 treesize of output 62 [2021-08-26 02:21:06,793 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-08-26 02:21:06,793 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 02:21:06,801 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 02:21:06,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280583615] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:21:06,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:21:06,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-08-26 02:21:06,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387563599] [2021-08-26 02:21:06,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-26 02:21:06,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:21:06,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-26 02:21:06,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2021-08-26 02:21:06,803 INFO L87 Difference]: Start difference. First operand 102 states and 105 transitions. Second operand has 22 states, 22 states have (on average 5.5) internal successors, (121), 22 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 02:21:07,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:21:07,396 INFO L93 Difference]: Finished difference Result 150 states and 153 transitions. [2021-08-26 02:21:07,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 02:21:07,397 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.5) internal successors, (121), 22 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 02:21:07,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:21:07,397 INFO L225 Difference]: With dead ends: 150 [2021-08-26 02:21:07,397 INFO L226 Difference]: Without dead ends: 148 [2021-08-26 02:21:07,398 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 732.1ms TimeCoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2021-08-26 02:21:07,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-08-26 02:21:07,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 130. [2021-08-26 02:21:07,407 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 02:21:07,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 133 transitions. [2021-08-26 02:21:07,408 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 133 transitions. Word has length 63 [2021-08-26 02:21:07,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:21:07,408 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 133 transitions. [2021-08-26 02:21:07,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.5) internal successors, (121), 22 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 02:21:07,409 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 133 transitions. [2021-08-26 02:21:07,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-08-26 02:21:07,409 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:21:07,409 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 02:21:07,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-08-26 02:21:07,623 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 02:21:07,623 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:21:07,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:21:07,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1943137371, now seen corresponding path program 3 times [2021-08-26 02:21:07,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:21:07,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701031626] [2021-08-26 02:21:07,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:21:07,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:21:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:21:08,215 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 02:21:08,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:21:08,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701031626] [2021-08-26 02:21:08,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701031626] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:21:08,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122560226] [2021-08-26 02:21:08,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 02:21:08,216 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:21:08,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:21:08,216 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 02:21:08,220 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 02:21:11,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-08-26 02:21:11,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:21:11,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 100 conjunts are in the unsatisfiable core [2021-08-26 02:21:11,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:21:11,548 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 02:21:11,585 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:21:11,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:21:11,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:21:11,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:21:11,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:21:11,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:21:11,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:21:11,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:21:11,915 INFO L354 Elim1Store]: treesize reduction 58, result has 20.5 percent of original size [2021-08-26 02:21:11,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 149 treesize of output 94 [2021-08-26 02:21:11,935 INFO L354 Elim1Store]: treesize reduction 82, result has 18.8 percent of original size [2021-08-26 02:21:11,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 113 treesize of output 83 [2021-08-26 02:21:11,958 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:21:11,958 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 77 treesize of output 92 [2021-08-26 02:21:12,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:21:12,122 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-08-26 02:21:12,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 80 [2021-08-26 02:21:12,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:21:12,128 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:21:12,128 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 2 case distinctions, treesize of input 80 treesize of output 70 [2021-08-26 02:21:12,409 INFO L354 Elim1Store]: treesize reduction 108, result has 16.9 percent of original size [2021-08-26 02:21:12,410 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 5 new quantified variables, introduced 7 case distinctions, treesize of input 233 treesize of output 120 [2021-08-26 02:21:12,467 INFO L354 Elim1Store]: treesize reduction 216, result has 13.6 percent of original size [2021-08-26 02:21:12,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 181 treesize of output 138 [2021-08-26 02:21:12,516 INFO L354 Elim1Store]: treesize reduction 138, result has 27.4 percent of original size [2021-08-26 02:21:12,517 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 129 treesize of output 159 [2021-08-26 02:21:12,779 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 02:21:12,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:21:12,797 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-08-26 02:21:12,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 143 treesize of output 106 [2021-08-26 02:21:12,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:21:12,807 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-08-26 02:21:12,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 124 treesize of output 117 [2021-08-26 02:21:13,288 INFO L354 Elim1Store]: treesize reduction 166, result has 14.9 percent of original size [2021-08-26 02:21:13,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 422 treesize of output 183 [2021-08-26 02:21:13,347 INFO L354 Elim1Store]: treesize reduction 430, result has 11.0 percent of original size [2021-08-26 02:21:13,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 354 treesize of output 298 [2021-08-26 02:21:13,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 286 treesize of output 238 [2021-08-26 02:21:13,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 235 treesize of output 223 [2021-08-26 02:21:13,409 INFO L354 Elim1Store]: treesize reduction 264, result has 24.4 percent of original size [2021-08-26 02:21:13,409 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 220 treesize of output 269 [2021-08-26 02:21:13,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:21:13,726 INFO L354 Elim1Store]: treesize reduction 53, result has 26.4 percent of original size [2021-08-26 02:21:13,726 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 231 treesize of output 230 [2021-08-26 02:21:13,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:21:13,736 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-08-26 02:21:13,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 9 case distinctions, treesize of input 227 treesize of output 148 [2021-08-26 02:21:13,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:21:13,744 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-08-26 02:21:13,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 208 treesize of output 204 [2021-08-26 02:21:14,377 INFO L354 Elim1Store]: treesize reduction 232, result has 13.4 percent of original size [2021-08-26 02:21:14,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 16 case distinctions, treesize of input 575 treesize of output 210 [2021-08-26 02:21:14,485 INFO L354 Elim1Store]: treesize reduction 736, result has 9.4 percent of original size [2021-08-26 02:21:14,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 case distinctions, treesize of input 491 treesize of output 422 [2021-08-26 02:21:14,492 INFO L354 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2021-08-26 02:21:14,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 407 treesize of output 350 [2021-08-26 02:21:14,498 INFO L354 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2021-08-26 02:21:14,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 344 treesize of output 335 [2021-08-26 02:21:14,534 INFO L354 Elim1Store]: treesize reduction 260, result has 19.0 percent of original size [2021-08-26 02:21:14,535 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 329 treesize of output 337 [2021-08-26 02:21:14,815 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-08-26 02:21:14,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 533 treesize of output 174 [2021-08-26 02:21:14,853 INFO L354 Elim1Store]: treesize reduction 232, result has 15.6 percent of original size [2021-08-26 02:21:14,853 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 458 treesize of output 440 [2021-08-26 02:21:14,859 INFO L354 Elim1Store]: treesize reduction 420, result has 0.2 percent of original size [2021-08-26 02:21:14,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 434 treesize of output 377 [2021-08-26 02:21:16,859 INFO L354 Elim1Store]: treesize reduction 246, result has 18.3 percent of original size [2021-08-26 02:21:16,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 15 new quantified variables, introduced 28 case distinctions, treesize of input 396 treesize of output 191 [2021-08-26 02:21:16,925 INFO L354 Elim1Store]: treesize reduction 262, result has 2.6 percent of original size [2021-08-26 02:21:16,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 153 treesize of output 129 [2021-08-26 02:21:16,933 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:21:16,933 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 02:21:16,939 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 02:21:16,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122560226] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:21:16,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:21:16,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18] total 27 [2021-08-26 02:21:16,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747625751] [2021-08-26 02:21:16,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-26 02:21:16,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:21:16,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-26 02:21:16,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2021-08-26 02:21:16,941 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 02:21:18,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:21:18,606 INFO L93 Difference]: Finished difference Result 185 states and 190 transitions. [2021-08-26 02:21:18,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-26 02:21:18,606 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 02:21:18,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:21:18,607 INFO L225 Difference]: With dead ends: 185 [2021-08-26 02:21:18,607 INFO L226 Difference]: Without dead ends: 183 [2021-08-26 02:21:18,607 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 2009.7ms TimeCoverageRelationStatistics Valid=195, Invalid=1211, Unknown=0, NotChecked=0, Total=1406 [2021-08-26 02:21:18,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-08-26 02:21:18,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 101. [2021-08-26 02:21:18,615 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 02:21:18,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2021-08-26 02:21:18,615 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 65 [2021-08-26 02:21:18,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:21:18,616 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2021-08-26 02:21:18,616 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 02:21:18,616 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2021-08-26 02:21:18,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-08-26 02:21:18,616 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:21:18,616 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 02:21:18,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-08-26 02:21:18,817 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 02:21:18,817 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 02:21:18,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:21:18,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1258127955, now seen corresponding path program 2 times [2021-08-26 02:21:18,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:21:18,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196602579] [2021-08-26 02:21:18,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:21:18,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:21:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:21:19,259 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 02:21:19,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:21:19,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196602579] [2021-08-26 02:21:19,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196602579] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:21:19,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186278613] [2021-08-26 02:21:19,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 02:21:19,260 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:21:19,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:21:19,265 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 02:21:19,267 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 02:21:22,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 02:21:22,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:21:22,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 33 conjunts are in the unsatisfiable core [2021-08-26 02:21:22,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:21:25,610 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 02:21:25,610 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 02:21:25,626 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 02:21:25,627 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 02:21:25,770 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 02:21:25,778 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 02:21:25,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186278613] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:21:25,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:21:25,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 20 [2021-08-26 02:21:25,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990583657] [2021-08-26 02:21:25,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-26 02:21:25,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:21:25,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-26 02:21:25,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=332, Unknown=2, NotChecked=0, Total=380 [2021-08-26 02:21:25,779 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand has 20 states, 20 states have (on average 6.25) internal successors, (125), 20 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 02:22:12,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:22:12,251 INFO L93 Difference]: Finished difference Result 149 states and 152 transitions. [2021-08-26 02:22:12,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-08-26 02:22:12,252 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.25) internal successors, (125), 20 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 02:22:12,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:22:12,252 INFO L225 Difference]: With dead ends: 149 [2021-08-26 02:22:12,252 INFO L226 Difference]: Without dead ends: 147 [2021-08-26 02:22:12,253 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 3413.8ms TimeCoverageRelationStatistics Valid=153, Invalid=967, Unknown=2, NotChecked=0, Total=1122 [2021-08-26 02:22:12,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-08-26 02:22:12,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 123. [2021-08-26 02:22:12,268 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 02:22:12,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 126 transitions. [2021-08-26 02:22:12,269 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 126 transitions. Word has length 71 [2021-08-26 02:22:12,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:22:12,269 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 126 transitions. [2021-08-26 02:22:12,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.25) internal successors, (125), 20 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 02:22:12,270 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 126 transitions. [2021-08-26 02:22:12,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-08-26 02:22:12,270 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:22:12,270 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 02:22:12,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-08-26 02:22:12,476 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 02:22:12,477 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 02:22:12,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:22:12,477 INFO L82 PathProgramCache]: Analyzing trace with hash 13255584, now seen corresponding path program 3 times [2021-08-26 02:22:12,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:22:12,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798982165] [2021-08-26 02:22:12,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:22:12,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:22:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:22:13,006 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 02:22:13,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:22:13,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798982165] [2021-08-26 02:22:13,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798982165] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:22:13,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046951536] [2021-08-26 02:22:13,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 02:22:13,007 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:22:13,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:22:13,008 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:22:13,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-08-26 02:22:16,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-08-26 02:22:16,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:22:16,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 87 conjunts are in the unsatisfiable core [2021-08-26 02:22:16,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:22:16,491 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 02:22:16,524 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:22:16,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:22:16,539 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-08-26 02:22:16,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-08-26 02:22:16,564 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:22:16,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:22:16,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:16,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:22:16,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:16,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:22:16,875 INFO L354 Elim1Store]: treesize reduction 58, result has 20.5 percent of original size [2021-08-26 02:22:16,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 149 treesize of output 94 [2021-08-26 02:22:16,896 INFO L354 Elim1Store]: treesize reduction 82, result has 18.8 percent of original size [2021-08-26 02:22:16,897 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 4 case distinctions, treesize of input 113 treesize of output 83 [2021-08-26 02:22:16,921 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:22:16,921 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 77 treesize of output 92 [2021-08-26 02:22:17,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:17,092 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:22:17,092 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 2 case distinctions, treesize of input 99 treesize of output 89 [2021-08-26 02:22:17,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:17,098 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-08-26 02:22:17,098 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 61 [2021-08-26 02:22:17,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 02:22:17,476 INFO L354 Elim1Store]: treesize reduction 108, result has 16.9 percent of original size [2021-08-26 02:22:17,476 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 5 new quantified variables, introduced 7 case distinctions, treesize of input 302 treesize of output 157 [2021-08-26 02:22:17,516 INFO L354 Elim1Store]: treesize reduction 216, result has 13.6 percent of original size [2021-08-26 02:22:17,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 250 treesize of output 207 [2021-08-26 02:22:17,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 198 treesize of output 162 [2021-08-26 02:22:17,560 INFO L354 Elim1Store]: treesize reduction 138, result has 27.4 percent of original size [2021-08-26 02:22:17,560 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 159 treesize of output 189 [2021-08-26 02:22:17,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 165 [2021-08-26 02:22:17,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:17,837 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-08-26 02:22:17,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 171 treesize of output 126 [2021-08-26 02:22:17,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:22:17,857 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-08-26 02:22:17,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 152 treesize of output 145 [2021-08-26 02:22:17,861 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 02:22:17,870 INFO L354 Elim1Store]: treesize reduction 41, result has 26.8 percent of original size [2021-08-26 02:22:17,871 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 133 treesize of output 132 [2021-08-26 02:22:18,344 INFO L354 Elim1Store]: treesize reduction 166, result has 14.9 percent of original size [2021-08-26 02:22:18,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 407 treesize of output 180 [2021-08-26 02:22:18,401 INFO L354 Elim1Store]: treesize reduction 430, result has 11.0 percent of original size [2021-08-26 02:22:18,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 339 treesize of output 283 [2021-08-26 02:22:18,407 INFO L354 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2021-08-26 02:22:18,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 271 treesize of output 226 [2021-08-26 02:22:18,413 INFO L354 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2021-08-26 02:22:18,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 220 treesize of output 211 [2021-08-26 02:22:18,439 INFO L354 Elim1Store]: treesize reduction 136, result has 23.2 percent of original size [2021-08-26 02:22:18,439 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 205 treesize of output 211 [2021-08-26 02:22:18,680 INFO L354 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2021-08-26 02:22:18,681 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 406 treesize of output 153 [2021-08-26 02:22:18,687 INFO L354 Elim1Store]: treesize reduction 240, result has 0.4 percent of original size [2021-08-26 02:22:18,687 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 10 case distinctions, treesize of input 343 treesize of output 295 [2021-08-26 02:22:18,704 INFO L354 Elim1Store]: treesize reduction 184, result has 16.0 percent of original size [2021-08-26 02:22:18,704 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 280 treesize of output 266 [2021-08-26 02:22:24,971 INFO L354 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2021-08-26 02:22:24,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 250 treesize of output 125 [2021-08-26 02:22:24,996 INFO L354 Elim1Store]: treesize reduction 134, result has 2.2 percent of original size [2021-08-26 02:22:24,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 104 treesize of output 82 [2021-08-26 02:22:25,267 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-08-26 02:22:25,268 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 49 treesize of output 41 [2021-08-26 02:22:25,277 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 02:22:25,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046951536] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:22:25,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:22:25,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19] total 29 [2021-08-26 02:22:25,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931695283] [2021-08-26 02:22:25,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-08-26 02:22:25,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:22:25,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-08-26 02:22:25,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=716, Unknown=2, NotChecked=0, Total=812 [2021-08-26 02:22:25,278 INFO L87 Difference]: Start difference. First operand 123 states and 126 transitions. Second operand has 29 states, 29 states have (on average 4.793103448275862) internal successors, (139), 29 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 02:23:04,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:23:04,807 INFO L93 Difference]: Finished difference Result 186 states and 190 transitions. [2021-08-26 02:23:04,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-26 02:23:04,808 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.793103448275862) internal successors, (139), 29 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 02:23:04,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:23:04,808 INFO L225 Difference]: With dead ends: 186 [2021-08-26 02:23:04,808 INFO L226 Difference]: Without dead ends: 184 [2021-08-26 02:23:04,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 7816.6ms TimeCoverageRelationStatistics Valid=202, Invalid=1688, Unknown=2, NotChecked=0, Total=1892 [2021-08-26 02:23:04,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-08-26 02:23:04,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 80. [2021-08-26 02:23:04,817 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 02:23:04,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2021-08-26 02:23:04,817 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 72 [2021-08-26 02:23:04,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:23:04,818 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2021-08-26 02:23:04,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.793103448275862) internal successors, (139), 29 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 02:23:04,818 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2021-08-26 02:23:04,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-08-26 02:23:04,818 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:23:04,819 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 02:23:04,846 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 02:23:05,020 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 02:23:05,020 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:23:05,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:23:05,021 INFO L82 PathProgramCache]: Analyzing trace with hash -672046049, now seen corresponding path program 4 times [2021-08-26 02:23:05,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:23:05,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639689047] [2021-08-26 02:23:05,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:23:05,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:23:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:23:05,377 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 02:23:05,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:23:05,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639689047] [2021-08-26 02:23:05,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639689047] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:23:05,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604183068] [2021-08-26 02:23:05,378 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 02:23:05,378 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:23:05,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:23:05,378 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:23:05,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-08-26 02:23:09,130 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 02:23:09,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:23:09,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 60 conjunts are in the unsatisfiable core [2021-08-26 02:23:09,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:23:09,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:23:09,196 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-08-26 02:23:09,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-08-26 02:23:09,212 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:23:09,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:23:09,230 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:23:09,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:23:09,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:09,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:23:09,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:09,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:23:09,548 INFO L354 Elim1Store]: treesize reduction 58, result has 20.5 percent of original size [2021-08-26 02:23:09,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 149 treesize of output 94 [2021-08-26 02:23:09,569 INFO L354 Elim1Store]: treesize reduction 82, result has 18.8 percent of original size [2021-08-26 02:23:09,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 113 treesize of output 83 [2021-08-26 02:23:09,602 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:23:09,602 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 77 treesize of output 92 [2021-08-26 02:23:09,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:09,776 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-08-26 02:23:09,776 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 80 [2021-08-26 02:23:09,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:09,782 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:23:09,782 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 2 case distinctions, treesize of input 80 treesize of output 70 [2021-08-26 02:23:10,068 INFO L354 Elim1Store]: treesize reduction 108, result has 16.9 percent of original size [2021-08-26 02:23:10,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 227 treesize of output 114 [2021-08-26 02:23:10,103 INFO L354 Elim1Store]: treesize reduction 216, result has 13.6 percent of original size [2021-08-26 02:23:10,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 175 treesize of output 132 [2021-08-26 02:23:10,122 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-08-26 02:23:10,122 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 123 treesize of output 127 [2021-08-26 02:23:10,281 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-08-26 02:23:10,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 234 treesize of output 107 [2021-08-26 02:23:10,286 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-08-26 02:23:10,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 183 treesize of output 144 [2021-08-26 02:23:12,172 INFO L354 Elim1Store]: treesize reduction 227, result has 8.8 percent of original size [2021-08-26 02:23:12,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 14 new quantified variables, introduced 21 case distinctions, treesize of input 258 treesize of output 128 [2021-08-26 02:23:12,221 INFO L354 Elim1Store]: treesize reduction 207, result has 4.6 percent of original size [2021-08-26 02:23:12,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 61 [2021-08-26 02:23:12,243 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 02:23:12,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604183068] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:23:12,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:23:12,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 25 [2021-08-26 02:23:12,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756802824] [2021-08-26 02:23:12,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-26 02:23:12,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:23:12,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-26 02:23:12,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2021-08-26 02:23:12,245 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 25 states, 25 states have (on average 6.0) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:23:18,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:23:18,032 INFO L93 Difference]: Finished difference Result 145 states and 147 transitions. [2021-08-26 02:23:18,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-26 02:23:18,033 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.0) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 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 02:23:18,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:23:18,033 INFO L225 Difference]: With dead ends: 145 [2021-08-26 02:23:18,033 INFO L226 Difference]: Without dead ends: 89 [2021-08-26 02:23:18,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 653.0ms TimeCoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2021-08-26 02:23:18,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-08-26 02:23:18,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-08-26 02:23:18,042 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 02:23:18,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2021-08-26 02:23:18,043 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 79 [2021-08-26 02:23:18,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:23:18,043 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2021-08-26 02:23:18,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.0) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:23:18,043 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2021-08-26 02:23:18,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-08-26 02:23:18,043 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:23:18,043 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 02:23:18,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-08-26 02:23:18,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:23:18,244 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:23:18,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:23:18,245 INFO L82 PathProgramCache]: Analyzing trace with hash -12631752, now seen corresponding path program 5 times [2021-08-26 02:23:18,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:23:18,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567219546] [2021-08-26 02:23:18,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:23:18,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:23:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:23:18,808 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 02:23:18,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:23:18,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567219546] [2021-08-26 02:23:18,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567219546] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:23:18,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822405172] [2021-08-26 02:23:18,809 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 02:23:18,809 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:23:18,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:23:18,813 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:23:18,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-08-26 02:23:22,848 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-08-26 02:23:22,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:23:22,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 91 conjunts are in the unsatisfiable core [2021-08-26 02:23:22,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:23:22,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:23:22,898 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:23:22,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:23:22,914 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:23:22,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:23:22,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:23:22,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:22,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:23:22,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:22,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:23:23,189 INFO L354 Elim1Store]: treesize reduction 58, result has 20.5 percent of original size [2021-08-26 02:23:23,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 149 treesize of output 94 [2021-08-26 02:23:23,210 INFO L354 Elim1Store]: treesize reduction 82, result has 18.8 percent of original size [2021-08-26 02:23:23,210 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 4 case distinctions, treesize of input 113 treesize of output 83 [2021-08-26 02:23:23,234 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:23:23,234 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 77 treesize of output 92 [2021-08-26 02:23:23,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:23,446 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-08-26 02:23:23,446 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 80 [2021-08-26 02:23:23,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:23,451 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:23:23,451 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 2 case distinctions, treesize of input 80 treesize of output 70 [2021-08-26 02:23:23,727 INFO L354 Elim1Store]: treesize reduction 108, result has 16.9 percent of original size [2021-08-26 02:23:23,727 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 5 new quantified variables, introduced 7 case distinctions, treesize of input 233 treesize of output 120 [2021-08-26 02:23:23,762 INFO L354 Elim1Store]: treesize reduction 216, result has 13.6 percent of original size [2021-08-26 02:23:23,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 181 treesize of output 138 [2021-08-26 02:23:23,801 INFO L354 Elim1Store]: treesize reduction 138, result has 27.4 percent of original size [2021-08-26 02:23:23,801 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 129 treesize of output 159 [2021-08-26 02:23:24,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:24,040 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-08-26 02:23:24,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 143 treesize of output 106 [2021-08-26 02:23:24,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:23:24,054 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-08-26 02:23:24,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 124 treesize of output 117 [2021-08-26 02:23:24,440 INFO L354 Elim1Store]: treesize reduction 166, result has 14.9 percent of original size [2021-08-26 02:23:24,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 331 treesize of output 140 [2021-08-26 02:23:24,493 INFO L354 Elim1Store]: treesize reduction 430, result has 11.0 percent of original size [2021-08-26 02:23:24,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 263 treesize of output 207 [2021-08-26 02:23:24,520 INFO L354 Elim1Store]: treesize reduction 136, result has 23.2 percent of original size [2021-08-26 02:23:24,521 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 195 treesize of output 201 [2021-08-26 02:23:24,732 INFO L354 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2021-08-26 02:23:24,732 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 372 treesize of output 139 [2021-08-26 02:23:24,754 INFO L354 Elim1Store]: treesize reduction 240, result has 0.4 percent of original size [2021-08-26 02:23:24,754 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 10 case distinctions, treesize of input 309 treesize of output 261 [2021-08-26 02:23:24,757 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 246 treesize of output 226 [2021-08-26 02:23:39,846 INFO L354 Elim1Store]: treesize reduction 287, result has 10.6 percent of original size [2021-08-26 02:23:39,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 16 new quantified variables, introduced 28 case distinctions, treesize of input 352 treesize of output 161 [2021-08-26 02:23:39,909 INFO L354 Elim1Store]: treesize reduction 275, result has 3.5 percent of original size [2021-08-26 02:23:39,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 11 new quantified variables, introduced 28 case distinctions, treesize of input 102 treesize of output 84 [2021-08-26 02:23:39,973 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 02:23:39,983 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 02:23:39,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822405172] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:23:39,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:23:39,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 26 [2021-08-26 02:23:39,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651309631] [2021-08-26 02:23:39,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-08-26 02:23:39,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:23:39,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-08-26 02:23:39,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=582, Unknown=5, NotChecked=0, Total=650 [2021-08-26 02:23:39,984 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 26 states, 26 states have (on average 6.576923076923077) internal successors, (171), 26 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:34,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:24:34,806 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2021-08-26 02:24:34,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-26 02:24:34,806 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.576923076923077) internal successors, (171), 26 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-08-26 02:24:34,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:24:34,807 INFO L225 Difference]: With dead ends: 162 [2021-08-26 02:24:34,807 INFO L226 Difference]: Without dead ends: 160 [2021-08-26 02:24:34,808 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 15605.9ms TimeCoverageRelationStatistics Valid=132, Invalid=1195, Unknown=5, NotChecked=0, Total=1332 [2021-08-26 02:24:34,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-08-26 02:24:34,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 126. [2021-08-26 02:24:34,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.024) internal successors, (128), 125 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:34,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 128 transitions. [2021-08-26 02:24:34,825 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 128 transitions. Word has length 88 [2021-08-26 02:24:34,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:24:34,826 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 128 transitions. [2021-08-26 02:24:34,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.576923076923077) internal successors, (171), 26 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:24:34,826 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 128 transitions. [2021-08-26 02:24:34,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-08-26 02:24:34,826 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:24:34,826 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1] [2021-08-26 02:24:34,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-08-26 02:24:35,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:24:35,027 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:24:35,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:24:35,027 INFO L82 PathProgramCache]: Analyzing trace with hash 650931716, now seen corresponding path program 6 times [2021-08-26 02:24:35,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:24:35,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332095934] [2021-08-26 02:24:35,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:24:35,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:24:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:24:35,569 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 16 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:35,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:24:35,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332095934] [2021-08-26 02:24:35,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332095934] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:24:35,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159743750] [2021-08-26 02:24:35,570 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-26 02:24:35,570 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:24:35,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:24:35,584 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:24:35,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-08-26 02:24:39,960 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-08-26 02:24:39,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 02:24:39,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 93 conjunts are in the unsatisfiable core [2021-08-26 02:24:39,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:24:39,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:24:40,029 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-08-26 02:24:40,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-08-26 02:24:40,052 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:24:40,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:24:40,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:24:40,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:24:40,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:24:40,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:24:40,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:24:40,329 INFO L354 Elim1Store]: treesize reduction 58, result has 20.5 percent of original size [2021-08-26 02:24:40,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 149 treesize of output 94 [2021-08-26 02:24:40,349 INFO L354 Elim1Store]: treesize reduction 82, result has 18.8 percent of original size [2021-08-26 02:24:40,349 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 4 case distinctions, treesize of input 113 treesize of output 83 [2021-08-26 02:24:40,372 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:24:40,372 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 77 treesize of output 92 [2021-08-26 02:24:40,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:24:40,551 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-08-26 02:24:40,551 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 80 [2021-08-26 02:24:40,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:24:40,558 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:24:40,558 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 2 case distinctions, treesize of input 80 treesize of output 70 [2021-08-26 02:24:40,834 INFO L354 Elim1Store]: treesize reduction 108, result has 16.9 percent of original size [2021-08-26 02:24:40,835 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 5 new quantified variables, introduced 7 case distinctions, treesize of input 233 treesize of output 120 [2021-08-26 02:24:40,870 INFO L354 Elim1Store]: treesize reduction 216, result has 13.6 percent of original size [2021-08-26 02:24:40,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 181 treesize of output 138 [2021-08-26 02:24:40,908 INFO L354 Elim1Store]: treesize reduction 138, result has 27.4 percent of original size [2021-08-26 02:24:40,908 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 129 treesize of output 159 [2021-08-26 02:24:41,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:24:41,139 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-08-26 02:24:41,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 143 treesize of output 106 [2021-08-26 02:24:41,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:24:41,145 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-08-26 02:24:41,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 124 treesize of output 117 [2021-08-26 02:24:41,546 INFO L354 Elim1Store]: treesize reduction 166, result has 14.9 percent of original size [2021-08-26 02:24:41,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 331 treesize of output 140 [2021-08-26 02:24:41,616 INFO L354 Elim1Store]: treesize reduction 430, result has 11.0 percent of original size [2021-08-26 02:24:41,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 263 treesize of output 207 [2021-08-26 02:24:41,642 INFO L354 Elim1Store]: treesize reduction 136, result has 23.2 percent of original size [2021-08-26 02:24:41,642 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 195 treesize of output 201 [2021-08-26 02:24:41,825 INFO L354 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2021-08-26 02:24:41,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 329 treesize of output 128 [2021-08-26 02:24:41,830 INFO L354 Elim1Store]: treesize reduction 240, result has 0.4 percent of original size [2021-08-26 02:24:41,830 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 10 case distinctions, treesize of input 266 treesize of output 218 [2021-08-26 02:24:44,615 INFO L354 Elim1Store]: treesize reduction 384, result has 8.8 percent of original size [2021-08-26 02:24:44,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 19 new quantified variables, introduced 36 case distinctions, treesize of input 457 treesize of output 183 [2021-08-26 02:24:44,720 INFO L354 Elim1Store]: treesize reduction 364, result has 3.4 percent of original size [2021-08-26 02:24:44,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 36 case distinctions, treesize of input 102 treesize of output 86 [2021-08-26 02:24:44,742 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 16 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:24:44,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159743750] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:24:44,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:24:44,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 28 [2021-08-26 02:24:44,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494789781] [2021-08-26 02:24:44,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-08-26 02:24:44,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:24:44,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-08-26 02:24:44,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2021-08-26 02:24:44,744 INFO L87 Difference]: Start difference. First operand 126 states and 128 transitions. Second operand has 28 states, 28 states have (on average 6.571428571428571) internal successors, (184), 28 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:25:21,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:25:21,136 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2021-08-26 02:25:21,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-26 02:25:21,137 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.571428571428571) internal successors, (184), 28 states have internal predecessors, (184), 0 states have call successors, (0), 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 96 [2021-08-26 02:25:21,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:25:21,137 INFO L225 Difference]: With dead ends: 162 [2021-08-26 02:25:21,137 INFO L226 Difference]: Without dead ends: 98 [2021-08-26 02:25:21,138 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3167.3ms TimeCoverageRelationStatistics Valid=142, Invalid=1263, Unknown=1, NotChecked=0, Total=1406 [2021-08-26 02:25:21,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-08-26 02:25:21,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-08-26 02:25:21,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 97 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:25:21,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2021-08-26 02:25:21,147 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 96 [2021-08-26 02:25:21,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:25:21,147 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2021-08-26 02:25:21,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.571428571428571) internal successors, (184), 28 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:25:21,147 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2021-08-26 02:25:21,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-08-26 02:25:21,147 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:25:21,148 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1] [2021-08-26 02:25:21,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-08-26 02:25:21,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-08-26 02:25:21,349 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-08-26 02:25:21,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:25:21,350 INFO L82 PathProgramCache]: Analyzing trace with hash 6688831, now seen corresponding path program 7 times [2021-08-26 02:25:21,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:25:21,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627762710] [2021-08-26 02:25:21,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:25:21,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:25:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:25:22,100 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:25:22,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:25:22,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627762710] [2021-08-26 02:25:22,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627762710] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 02:25:22,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308237008] [2021-08-26 02:25:22,101 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-26 02:25:22,101 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:25:22,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:25:22,102 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 02:25:22,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-08-26 02:25:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:25:26,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 102 conjunts are in the unsatisfiable core [2021-08-26 02:25:26,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:25:26,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:25:26,812 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:25:26,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:25:26,829 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-08-26 02:25:26,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-08-26 02:25:26,867 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-26 02:25:26,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-26 02:25:26,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:25:26,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:25:26,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:25:26,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-08-26 02:25:27,223 INFO L354 Elim1Store]: treesize reduction 58, result has 20.5 percent of original size [2021-08-26 02:25:27,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 149 treesize of output 94 [2021-08-26 02:25:27,244 INFO L354 Elim1Store]: treesize reduction 82, result has 18.8 percent of original size [2021-08-26 02:25:27,244 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 4 case distinctions, treesize of input 113 treesize of output 83 [2021-08-26 02:25:27,267 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-08-26 02:25:27,268 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 77 treesize of output 92 [2021-08-26 02:25:27,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:25:27,449 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-08-26 02:25:27,449 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 80 [2021-08-26 02:25:27,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:25:27,454 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-08-26 02:25:27,455 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 2 case distinctions, treesize of input 80 treesize of output 70 [2021-08-26 02:25:27,738 INFO L354 Elim1Store]: treesize reduction 108, result has 16.9 percent of original size [2021-08-26 02:25:27,738 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 5 new quantified variables, introduced 7 case distinctions, treesize of input 233 treesize of output 120 [2021-08-26 02:25:27,773 INFO L354 Elim1Store]: treesize reduction 216, result has 13.6 percent of original size [2021-08-26 02:25:27,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 181 treesize of output 138 [2021-08-26 02:25:27,813 INFO L354 Elim1Store]: treesize reduction 138, result has 27.4 percent of original size [2021-08-26 02:25:27,813 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 129 treesize of output 159 [2021-08-26 02:25:28,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:25:28,033 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-08-26 02:25:28,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 143 treesize of output 106 [2021-08-26 02:25:28,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:25:28,040 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-08-26 02:25:28,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 124 treesize of output 117 [2021-08-26 02:25:28,440 INFO L354 Elim1Store]: treesize reduction 166, result has 14.9 percent of original size [2021-08-26 02:25:28,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 337 treesize of output 146 [2021-08-26 02:25:28,494 INFO L354 Elim1Store]: treesize reduction 430, result has 11.0 percent of original size [2021-08-26 02:25:28,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 269 treesize of output 213 [2021-08-26 02:25:28,550 INFO L354 Elim1Store]: treesize reduction 264, result has 24.4 percent of original size [2021-08-26 02:25:28,550 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 201 treesize of output 250 [2021-08-26 02:25:28,819 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 02:25:28,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:25:28,836 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-08-26 02:25:28,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 9 case distinctions, treesize of input 199 treesize of output 132 [2021-08-26 02:25:28,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 02:25:28,844 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-08-26 02:25:28,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 180 treesize of output 176 [2021-08-26 02:25:29,461 INFO L354 Elim1Store]: treesize reduction 232, result has 13.4 percent of original size [2021-08-26 02:25:29,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 16 case distinctions, treesize of input 556 treesize of output 203 [2021-08-26 02:25:29,542 INFO L354 Elim1Store]: treesize reduction 736, result has 9.4 percent of original size [2021-08-26 02:25:29,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 case distinctions, treesize of input 472 treesize of output 403 [2021-08-26 02:25:29,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 388 treesize of output 328 [2021-08-26 02:25:29,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 325 treesize of output 313 [2021-08-26 02:25:29,584 INFO L354 Elim1Store]: treesize reduction 260, result has 19.0 percent of original size [2021-08-26 02:25:29,584 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 310 treesize of output 318 [2021-08-26 02:25:29,835 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-08-26 02:25:29,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 514 treesize of output 167 [2021-08-26 02:25:29,846 INFO L354 Elim1Store]: treesize reduction 105, result has 18.0 percent of original size [2021-08-26 02:25:29,846 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 439 treesize of output 418 [2021-08-26 02:25:29,851 INFO L354 Elim1Store]: treesize reduction 420, result has 0.2 percent of original size [2021-08-26 02:25:29,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 415 treesize of output 358 [2021-08-26 02:25:35,705 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 02:25:35,706 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-08-26 02:25:35,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 02:25:35,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-08-26 02:25:35,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920531054] [2021-08-26 02:25:35,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-26 02:25:35,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:25:35,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-26 02:25:35,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=726, Unknown=1, NotChecked=0, Total=812 [2021-08-26 02:25:35,707 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand has 17 states, 17 states have (on average 5.705882352941177) internal successors, (97), 17 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 02:25:35,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 02:25:35,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-08-26 02:25:35,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-08-26 02:25:35,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-08-26 02:25:35,908 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@78486e4e at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:356) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:204) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:61) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:63) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:864) 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) [2021-08-26 02:25:35,911 INFO L168 Benchmark]: Toolchain (without parser) took 397879.49 ms. Allocated memory was 52.4 MB in the beginning and 826.3 MB in the end (delta: 773.8 MB). Free memory was 28.6 MB in the beginning and 422.7 MB in the end (delta: -394.0 MB). Peak memory consumption was 381.8 MB. Max. memory is 16.1 GB. [2021-08-26 02:25:35,912 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 52.4 MB. Free memory was 34.7 MB in the beginning and 34.7 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 02:25:35,912 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.41 ms. Allocated memory is still 52.4 MB. Free memory was 28.4 MB in the beginning and 22.9 MB in the end (delta: 5.6 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2021-08-26 02:25:35,912 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.27 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 22.9 MB in the beginning and 47.0 MB in the end (delta: -24.1 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2021-08-26 02:25:35,912 INFO L168 Benchmark]: Boogie Preprocessor took 29.77 ms. Allocated memory is still 65.0 MB. Free memory was 47.0 MB in the beginning and 44.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 02:25:35,912 INFO L168 Benchmark]: RCFGBuilder took 580.51 ms. Allocated memory is still 65.0 MB. Free memory was 44.9 MB in the beginning and 31.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-08-26 02:25:35,912 INFO L168 Benchmark]: TraceAbstraction took 396862.51 ms. Allocated memory was 65.0 MB in the beginning and 826.3 MB in the end (delta: 761.3 MB). Free memory was 31.3 MB in the beginning and 422.7 MB in the end (delta: -391.4 MB). Peak memory consumption was 369.5 MB. Max. memory is 16.1 GB. [2021-08-26 02:25:35,913 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 52.4 MB. Free memory was 34.7 MB in the beginning and 34.7 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 348.41 ms. Allocated memory is still 52.4 MB. Free memory was 28.4 MB in the beginning and 22.9 MB in the end (delta: 5.6 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.27 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 22.9 MB in the beginning and 47.0 MB in the end (delta: -24.1 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.77 ms. Allocated memory is still 65.0 MB. Free memory was 47.0 MB in the beginning and 44.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 580.51 ms. Allocated memory is still 65.0 MB. Free memory was 44.9 MB in the beginning and 31.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 396862.51 ms. Allocated memory was 65.0 MB in the beginning and 826.3 MB in the end (delta: 761.3 MB). Free memory was 31.3 MB in the beginning and 422.7 MB in the end (delta: -391.4 MB). Peak memory consumption was 369.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@78486e4e de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@78486e4e: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) 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 02:25:38,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 02:25:38,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 02:25:38,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 02:25:38,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 02:25:38,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 02:25:38,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 02:25:38,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 02:25:38,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 02:25:38,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 02:25:38,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 02:25:38,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 02:25:38,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 02:25:38,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 02:25:38,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 02:25:38,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 02:25:38,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 02:25:38,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 02:25:38,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 02:25:38,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 02:25:38,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 02:25:38,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 02:25:38,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 02:25:38,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 02:25:38,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 02:25:38,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 02:25:38,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 02:25:38,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 02:25:38,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 02:25:38,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 02:25:38,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 02:25:38,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 02:25:38,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 02:25:38,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 02:25:38,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 02:25:38,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 02:25:38,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 02:25:38,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 02:25:38,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 02:25:38,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 02:25:38,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 02:25:38,201 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-26 02:25:38,227 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 02:25:38,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 02:25:38,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 02:25:38,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 02:25:38,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 02:25:38,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 02:25:38,230 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 02:25:38,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 02:25:38,230 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 02:25:38,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 02:25:38,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 02:25:38,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 02:25:38,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 02:25:38,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 02:25:38,232 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 02:25:38,233 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 02:25:38,233 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 02:25:38,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 02:25:38,233 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 02:25:38,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 02:25:38,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 02:25:38,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 02:25:38,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 02:25:38,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 02:25:38,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 02:25:38,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 02:25:38,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 02:25:38,235 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 02:25:38,235 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 02:25:38,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 02:25:38,236 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 02:25:38,236 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 02:25:38,236 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7731899c5e817fc6eaadbde2ec1f0ed993fe63c [2021-08-26 02:25:38,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 02:25:38,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 02:25:38,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 02:25:38,582 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 02:25:38,582 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 02:25:38,583 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-queue-1.i [2021-08-26 02:25:38,643 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4e4d9bb0/80d9a9fb6b094559915a5bc227e46ce3/FLAG1483d293c [2021-08-26 02:25:39,159 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 02:25:39,161 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i [2021-08-26 02:25:39,175 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4e4d9bb0/80d9a9fb6b094559915a5bc227e46ce3/FLAG1483d293c [2021-08-26 02:25:39,490 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4e4d9bb0/80d9a9fb6b094559915a5bc227e46ce3 [2021-08-26 02:25:39,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 02:25:39,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 02:25:39,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 02:25:39,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 02:25:39,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 02:25:39,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:25:39" (1/1) ... [2021-08-26 02:25:39,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f0fdf62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:25:39, skipping insertion in model container [2021-08-26 02:25:39,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:25:39" (1/1) ... [2021-08-26 02:25:39,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 02:25:39,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 02:25:39,766 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[22387,22400] [2021-08-26 02:25:39,769 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[22458,22471] [2021-08-26 02:25:39,770 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[22532,22545] [2021-08-26 02:25:39,771 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[22624,22637] [2021-08-26 02:25:39,771 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[22701,22714] [2021-08-26 02:25:39,772 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[22796,22809] [2021-08-26 02:25:39,773 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[22873,22886] [2021-08-26 02:25:39,774 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[22956,22969] [2021-08-26 02:25:39,775 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[23051,23064] [2021-08-26 02:25:39,775 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[23128,23141] [2021-08-26 02:25:39,776 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[23211,23224] [2021-08-26 02:25:39,777 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[23300,23313] [2021-08-26 02:25:39,778 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[23386,23399] [2021-08-26 02:25:39,779 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[23532,23545] [2021-08-26 02:25:39,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 02:25:39,791 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 02:25:39,821 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/sll-queue-1.i[22387,22400] [2021-08-26 02:25:39,822 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/sll-queue-1.i[22458,22471] [2021-08-26 02:25:39,822 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/sll-queue-1.i[22532,22545] [2021-08-26 02:25:39,823 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/sll-queue-1.i[22624,22637] [2021-08-26 02:25:39,823 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/sll-queue-1.i[22701,22714] [2021-08-26 02:25:39,824 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[22796,22809] [2021-08-26 02:25:39,825 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/sll-queue-1.i[22873,22886] [2021-08-26 02:25:39,826 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/sll-queue-1.i[22956,22969] [2021-08-26 02:25:39,826 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/sll-queue-1.i[23051,23064] [2021-08-26 02:25:39,827 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[23128,23141] [2021-08-26 02:25:39,828 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[23211,23224] [2021-08-26 02:25:39,828 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[23300,23313] [2021-08-26 02:25:39,829 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/sll-queue-1.i[23386,23399] [2021-08-26 02:25:39,830 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-1.i[23532,23545] [2021-08-26 02:25:39,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 02:25:39,854 INFO L208 MainTranslator]: Completed translation [2021-08-26 02:25:39,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:25:39 WrapperNode [2021-08-26 02:25:39,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 02:25:39,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 02:25:39,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 02:25:39,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 02:25:39,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:25:39" (1/1) ... [2021-08-26 02:25:39,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:25:39" (1/1) ... [2021-08-26 02:25:39,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 02:25:39,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 02:25:39,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 02:25:39,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 02:25:39,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:25:39" (1/1) ... [2021-08-26 02:25:39,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:25:39" (1/1) ... [2021-08-26 02:25:39,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:25:39" (1/1) ... [2021-08-26 02:25:39,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:25:39" (1/1) ... [2021-08-26 02:25:39,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:25:39" (1/1) ... [2021-08-26 02:25:39,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:25:39" (1/1) ... [2021-08-26 02:25:39,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:25:39" (1/1) ... [2021-08-26 02:25:39,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 02:25:39,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 02:25:39,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 02:25:39,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 02:25:39,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:25:39" (1/1) ... [2021-08-26 02:25:39,971 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 02:25:39,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:25:39,997 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 02:25:40,004 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 02:25:40,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-26 02:25:40,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-26 02:25:40,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-26 02:25:40,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 02:25:40,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-26 02:25:40,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 02:25:40,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-26 02:25:40,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 02:25:40,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 02:25:40,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 02:25:40,664 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 02:25:40,664 INFO L299 CfgBuilder]: Removed 35 assume(true) statements. [2021-08-26 02:25:40,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:25:40 BoogieIcfgContainer [2021-08-26 02:25:40,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 02:25:40,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 02:25:40,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 02:25:40,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 02:25:40,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 02:25:39" (1/3) ... [2021-08-26 02:25:40,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59388fad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:25:40, skipping insertion in model container [2021-08-26 02:25:40,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:25:39" (2/3) ... [2021-08-26 02:25:40,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59388fad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:25:40, skipping insertion in model container [2021-08-26 02:25:40,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:25:40" (3/3) ... [2021-08-26 02:25:40,683 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-queue-1.i [2021-08-26 02:25:40,687 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 02:25:40,700 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-08-26 02:25:40,756 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 02:25:40,764 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 02:25:40,765 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-08-26 02:25:40,775 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 02:25:40,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-26 02:25:40,782 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:25:40,789 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-26 02:25:40,789 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 02:25:40,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:25:40,794 INFO L82 PathProgramCache]: Analyzing trace with hash 28699591, now seen corresponding path program 1 times [2021-08-26 02:25:40,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:25:40,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446140602] [2021-08-26 02:25:40,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:25:40,808 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:25:40,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:25:40,815 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 02:25:40,819 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 02:25:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:25:40,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-26 02:25:40,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:25:40,959 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 02:25:40,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:25:40,986 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 02:25:40,986 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:25:40,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446140602] [2021-08-26 02:25:40,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446140602] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:25:40,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:25:40,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-26 02:25:40,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387231827] [2021-08-26 02:25:40,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:25:40,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:25:41,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:25:41,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:25:41,009 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 02:25:41,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:25:41,091 INFO L93 Difference]: Finished difference Result 153 states and 263 transitions. [2021-08-26 02:25:41,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:25:41,092 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 02:25:41,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:25:41,100 INFO L225 Difference]: With dead ends: 153 [2021-08-26 02:25:41,100 INFO L226 Difference]: Without dead ends: 67 [2021-08-26 02:25:41,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:25:41,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-08-26 02:25:41,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-08-26 02:25:41,135 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 02:25:41,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2021-08-26 02:25:41,140 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 5 [2021-08-26 02:25:41,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:25:41,140 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2021-08-26 02:25:41,140 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 02:25:41,140 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2021-08-26 02:25:41,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-26 02:25:41,141 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:25:41,141 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:25:41,158 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 02:25:41,348 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 02:25:41,349 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 02:25:41,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:25:41,349 INFO L82 PathProgramCache]: Analyzing trace with hash 296515339, now seen corresponding path program 1 times [2021-08-26 02:25:41,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:25:41,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960814444] [2021-08-26 02:25:41,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:25:41,356 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:25:41,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:25:41,360 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 02:25:41,362 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 02:25:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:25:41,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-26 02:25:41,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:25:41,456 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 02:25:41,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:25:41,486 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 02:25:41,486 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:25:41,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960814444] [2021-08-26 02:25:41,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960814444] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:25:41,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:25:41,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-26 02:25:41,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385805767] [2021-08-26 02:25:41,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:25:41,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:25:41,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:25:41,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:25:41,489 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:25:41,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:25:41,546 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2021-08-26 02:25:41,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:25:41,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-26 02:25:41,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:25:41,550 INFO L225 Difference]: With dead ends: 67 [2021-08-26 02:25:41,550 INFO L226 Difference]: Without dead ends: 65 [2021-08-26 02:25:41,551 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 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 02:25:41,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-08-26 02:25:41,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-08-26 02:25:41,556 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 02:25:41,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2021-08-26 02:25:41,559 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 8 [2021-08-26 02:25:41,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:25:41,559 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2021-08-26 02:25:41,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 02:25:41,559 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2021-08-26 02:25:41,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 02:25:41,561 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:25:41,562 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:25:41,572 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 02:25:41,769 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 02:25:41,769 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 02:25:41,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:25:41,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1137960540, now seen corresponding path program 1 times [2021-08-26 02:25:41,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:25:41,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375807460] [2021-08-26 02:25:41,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:25:41,771 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:25:41,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:25:41,772 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 02:25:41,775 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 02:25:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:25:41,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-26 02:25:41,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:25:41,882 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 02:25:41,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:25:41,925 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 02:25:41,925 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:25:41,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375807460] [2021-08-26 02:25:41,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375807460] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:25:41,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:25:41,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-08-26 02:25:41,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636617868] [2021-08-26 02:25:41,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:25:41,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:25:41,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:25:41,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:25:41,928 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 02:25:42,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:25:42,016 INFO L93 Difference]: Finished difference Result 165 states and 194 transitions. [2021-08-26 02:25:42,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 02:25:42,017 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 02:25:42,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:25:42,018 INFO L225 Difference]: With dead ends: 165 [2021-08-26 02:25:42,018 INFO L226 Difference]: Without dead ends: 102 [2021-08-26 02:25:42,018 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:25:42,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-08-26 02:25:42,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 82. [2021-08-26 02:25:42,028 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 02:25:42,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2021-08-26 02:25:42,031 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 11 [2021-08-26 02:25:42,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:25:42,031 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2021-08-26 02:25:42,031 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 02:25:42,031 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2021-08-26 02:25:42,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-26 02:25:42,032 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:25:42,032 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 02:25:42,044 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 02:25:42,241 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 02:25:42,242 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 02:25:42,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:25:42,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1315213501, now seen corresponding path program 1 times [2021-08-26 02:25:42,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:25:42,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198800757] [2021-08-26 02:25:42,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:25:42,243 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:25:42,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:25:42,244 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 02:25:42,256 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 02:25:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:25:42,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-26 02:25:42,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:25:42,420 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 02:25:42,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:25:42,469 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 02:25:42,469 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:25:42,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198800757] [2021-08-26 02:25:42,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198800757] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:25:42,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:25:42,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-26 02:25:42,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081323953] [2021-08-26 02:25:42,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 02:25:42,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:25:42,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 02:25:42,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 02:25:42,472 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 02:25:42,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:25:42,545 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2021-08-26 02:25:42,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 02:25:42,546 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 02:25:42,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:25:42,547 INFO L225 Difference]: With dead ends: 98 [2021-08-26 02:25:42,547 INFO L226 Difference]: Without dead ends: 78 [2021-08-26 02:25:42,548 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 02:25:42,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-08-26 02:25:42,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-08-26 02:25:42,553 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 02:25:42,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2021-08-26 02:25:42,554 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 14 [2021-08-26 02:25:42,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:25:42,554 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2021-08-26 02:25:42,554 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 02:25:42,554 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2021-08-26 02:25:42,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 02:25:42,555 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:25:42,555 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 02:25:42,567 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 02:25:42,765 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 02:25:42,765 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 02:25:42,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:25:42,766 INFO L82 PathProgramCache]: Analyzing trace with hash 129337073, now seen corresponding path program 1 times [2021-08-26 02:25:42,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:25:42,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855323346] [2021-08-26 02:25:42,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:25:42,767 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:25:42,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:25:42,768 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 02:25:42,770 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 02:25:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:25:42,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-26 02:25:42,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:25:42,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:25:43,038 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-08-26 02:25:43,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-08-26 02:25:43,071 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-26 02:25:43,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-08-26 02:25:43,156 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-08-26 02:25:43,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 44 [2021-08-26 02:25:43,406 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-26 02:25:43,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 18 [2021-08-26 02:25:43,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:25:43,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:25:43,570 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 176 treesize of output 172 [2021-08-26 02:25:43,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:25:43,780 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:25:43,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855323346] [2021-08-26 02:25:43,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855323346] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-26 02:25:43,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 02:25:43,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-08-26 02:25:43,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702673560] [2021-08-26 02:25:43,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 02:25:43,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:25:43,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 02:25:43,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-26 02:25:43,783 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 02:25:46,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:25:46,278 INFO L93 Difference]: Finished difference Result 148 states and 164 transitions. [2021-08-26 02:25:46,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 02:25:46,278 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 02:25:46,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:25:46,279 INFO L225 Difference]: With dead ends: 148 [2021-08-26 02:25:46,279 INFO L226 Difference]: Without dead ends: 146 [2021-08-26 02:25:46,280 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2189.4ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-08-26 02:25:46,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-08-26 02:25:46,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 90. [2021-08-26 02:25:46,288 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 02:25:46,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2021-08-26 02:25:46,291 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 17 [2021-08-26 02:25:46,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:25:46,291 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2021-08-26 02:25:46,292 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 02:25:46,293 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2021-08-26 02:25:46,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-26 02:25:46,294 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:25:46,294 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 02:25:46,306 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 02:25:46,494 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 02:25:46,495 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 02:25:46,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:25:46,495 INFO L82 PathProgramCache]: Analyzing trace with hash 32191693, now seen corresponding path program 1 times [2021-08-26 02:25:46,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:25:46,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657906640] [2021-08-26 02:25:46,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:25:46,496 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:25:46,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:25:46,496 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 02:25:46,497 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 02:25:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:25:46,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-26 02:25:46,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:25:46,694 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 02:25:46,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:25:46,748 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 02:25:46,749 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:25:46,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657906640] [2021-08-26 02:25:46,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657906640] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 02:25:46,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:25:46,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-26 02:25:46,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231268850] [2021-08-26 02:25:46,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:25:46,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 02:25:46,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:25:46,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:25:46,753 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 02:25:46,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:25:46,813 INFO L93 Difference]: Finished difference Result 176 states and 201 transitions. [2021-08-26 02:25:46,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:25:46,814 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 02:25:46,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:25:46,815 INFO L225 Difference]: With dead ends: 176 [2021-08-26 02:25:46,815 INFO L226 Difference]: Without dead ends: 102 [2021-08-26 02:25:46,817 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:25:46,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-08-26 02:25:46,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2021-08-26 02:25:46,830 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 02:25:46,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2021-08-26 02:25:46,830 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 18 [2021-08-26 02:25:46,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:25:46,831 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2021-08-26 02:25:46,831 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 02:25:46,831 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2021-08-26 02:25:46,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-26 02:25:46,835 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:25:46,835 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 02:25:46,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-26 02:25:47,047 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 02:25:47,048 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 02:25:47,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:25:47,048 INFO L82 PathProgramCache]: Analyzing trace with hash 43662915, now seen corresponding path program 1 times [2021-08-26 02:25:47,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 02:25:47,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664776158] [2021-08-26 02:25:47,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:25:47,048 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 02:25:47,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 02:25:47,049 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 02:25:47,084 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 02:25:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:25:47,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-26 02:25:47,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:25:47,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:25:47,290 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:25:47,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:25:47,313 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-26 02:25:47,314 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 15 treesize of output 15 [2021-08-26 02:25:47,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:25:47,445 INFO L354 Elim1Store]: treesize reduction 112, result has 14.5 percent of original size [2021-08-26 02:25:47,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 149 treesize of output 114 [2021-08-26 02:25:47,452 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 110 treesize of output 102 [2021-08-26 02:25:47,483 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-08-26 02:25:47,484 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 86 [2021-08-26 02:25:48,030 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-08-26 02:25:48,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 52 [2021-08-26 02:25:48,036 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-26 02:25:48,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 26 [2021-08-26 02:25:48,090 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 02:25:48,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:25:48,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:25:48,260 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 02:25:48,365 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 02:25:48,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664776158] [2021-08-26 02:25:48,365 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-26 02:25:48,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1476955711] [2021-08-26 02:25:48,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:25:48,366 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-26 02:25:48,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-26 02:25:48,381 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 02:25:48,389 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 02:25:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:25:48,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-26 02:25:48,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:25:48,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:25:48,730 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-26 02:25:48,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:25:48,767 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-08-26 02:25:48,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-08-26 02:25:48,792 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-26 02:25:48,793 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 15 treesize of output 15 [2021-08-26 02:25:48,829 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-26 02:25:48,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 76 [2021-08-26 02:25:48,833 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 84 treesize of output 76 [2021-08-26 02:25:48,838 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-26 02:25:48,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 55 [2021-08-26 02:25:49,338 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-08-26 02:25:49,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 52 [2021-08-26 02:25:49,344 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-26 02:25:49,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 26 [2021-08-26 02:25:49,401 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 02:25:49,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:25:49,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:25:49,529 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 02:25:49,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-26 02:25:49,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432569918] [2021-08-26 02:25:49,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:25:49,602 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 02:25:49,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:25:49,603 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 02:25:49,604 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 02:25:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:25:49,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-26 02:25:49,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 02:25:49,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 02:25:49,898 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-26 02:25:49,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2021-08-26 02:25:49,929 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-08-26 02:25:49,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-08-26 02:25:49,950 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-26 02:25:49,950 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 16 treesize of output 16 [2021-08-26 02:25:50,047 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-08-26 02:25:50,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 111 treesize of output 76 [2021-08-26 02:25:50,061 INFO L354 Elim1Store]: treesize reduction 57, result has 10.9 percent of original size [2021-08-26 02:25:50,061 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 2 case distinctions, treesize of input 84 treesize of output 63 [2021-08-26 02:25:50,063 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 57 treesize of output 49 [2021-08-26 02:25:50,525 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-26 02:25:50,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 42 [2021-08-26 02:25:50,535 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-26 02:25:50,536 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 33 treesize of output 21 [2021-08-26 02:25:50,580 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 02:25:50,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:25:50,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 02:25:50,705 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 02:25:50,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-26 02:25:50,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:25:50,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-26 02:25:50,782 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-26 02:25:50,782 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-26 02:25:50,786 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:25:50,787 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:25:50,788 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:25:50,788 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:25:50,788 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:25:50,788 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:25:50,788 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:25:50,788 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:25:50,789 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:25:50,789 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:25:50,789 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:25:50,789 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:25:50,789 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:25:50,789 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:25:50,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-08-26 02:25:50,999 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 02:25:51,207 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 02:25:51,390 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 02:25:51,395 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 02:25:51,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 02:25:51 BoogieIcfgContainer [2021-08-26 02:25:51,416 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 02:25:51,416 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 02:25:51,416 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 02:25:51,417 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 02:25:51,417 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:25:40" (3/4) ... [2021-08-26 02:25:51,419 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 02:25:51,419 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 02:25:51,420 INFO L168 Benchmark]: Toolchain (without parser) took 11927.01 ms. Allocated memory was 58.7 MB in the beginning and 130.0 MB in the end (delta: 71.3 MB). Free memory was 36.4 MB in the beginning and 56.6 MB in the end (delta: -20.2 MB). Peak memory consumption was 52.9 MB. Max. memory is 16.1 GB. [2021-08-26 02:25:51,420 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 58.7 MB. Free memory was 41.2 MB in the beginning and 41.1 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 02:25:51,420 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.69 ms. Allocated memory is still 58.7 MB. Free memory was 36.2 MB in the beginning and 33.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2021-08-26 02:25:51,421 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.23 ms. Allocated memory is still 58.7 MB. Free memory was 33.0 MB in the beginning and 30.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 02:25:51,421 INFO L168 Benchmark]: Boogie Preprocessor took 46.39 ms. Allocated memory is still 58.7 MB. Free memory was 30.8 MB in the beginning and 28.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 02:25:51,421 INFO L168 Benchmark]: RCFGBuilder took 717.94 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 28.4 MB in the beginning and 45.7 MB in the end (delta: -17.2 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2021-08-26 02:25:51,421 INFO L168 Benchmark]: TraceAbstraction took 10738.28 ms. Allocated memory was 73.4 MB in the beginning and 130.0 MB in the end (delta: 56.6 MB). Free memory was 45.3 MB in the beginning and 56.6 MB in the end (delta: -11.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 16.1 GB. [2021-08-26 02:25:51,422 INFO L168 Benchmark]: Witness Printer took 3.01 ms. Allocated memory is still 130.0 MB. Free memory is still 56.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 02:25:51,426 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 58.7 MB. Free memory was 41.2 MB in the beginning and 41.1 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 341.69 ms. Allocated memory is still 58.7 MB. Free memory was 36.2 MB in the beginning and 33.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.23 ms. Allocated memory is still 58.7 MB. Free memory was 33.0 MB in the beginning and 30.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.39 ms. Allocated memory is still 58.7 MB. Free memory was 30.8 MB in the beginning and 28.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 717.94 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 28.4 MB in the beginning and 45.7 MB in the end (delta: -17.2 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10738.28 ms. Allocated memory was 73.4 MB in the beginning and 130.0 MB in the end (delta: 56.6 MB). Free memory was 45.3 MB in the beginning and 56.6 MB in the end (delta: -11.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 16.1 GB. * Witness Printer took 3.01 ms. Allocated memory is still 130.0 MB. Free memory is still 56.6 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: 1053]: 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: [L996] SLL* head = malloc(sizeof(SLL)); [L997] head->next = ((void*)0) [L998] head->data = 0 [L999] SLL* item = head; [L1000] int status = 0; [L1002] COND TRUE __VERIFIER_nondet_int() [L1004] item->next = malloc(sizeof(SLL)) [L1005] EXPR item->next [L1005] item = item->next [L1006] item->next = ((void*)0) [L1008] COND TRUE !status [L1010] item->data = 1 [L1011] status = 1 [L1024] COND FALSE !(!(head != ((void*)0))) [L1025] COND FALSE !(!(item != ((void*)0))) [L1002] COND FALSE !(__VERIFIER_nondet_int()) [L1028] COND FALSE !(!(head != ((void*)0))) [L1029] COND TRUE status == 1 [L1031] COND FALSE !(!(head != ((void*)0))) [L1032] EXPR head->next [L1032] COND FALSE !(!(head->next != ((void*)0))) [L1034] COND FALSE !(status == 2) [L1040] COND FALSE !(status == 3) [L1049] EXPR head->next [L1049] item = head->next [L1051] COND TRUE item && __VERIFIER_nondet_int() [L1053] EXPR !status || item->data > 0 [L1053] EXPR item->data [L1053] EXPR !status || item->data > 0 [L1053] COND TRUE !(!status || item->data > 0) [L1053] reach_error() - UnprovableResult [Line: 1024]: 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: 1025]: 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: 1032]: 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: 1036]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1037]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1038]: 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: 1042]: 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: 1043]: 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: 1044]: 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. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 82 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 10639.0ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 17.3ms, AutomataDifference: 2901.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 390 SDtfs, 466 SDslu, 475 SDs, 0 SdLazy, 220 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 585.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2219.0ms 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: 75.6ms AutomataMinimizationTime, 6 MinimizatonAttempts, 86 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 76.8ms SsaConstructionTime, 122.0ms SatisfiabilityAnalysisTime, 1358.4ms InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 134 ConstructedInterpolants, 13 QuantifiedInterpolants, 725 SizeOfPredicates, 7 NumberOfNonLiveVariables, 299 ConjunctsInSsa, 20 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 02:25:51,457 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...